Highway testing equipment and instruments

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List of Testing Instruments and Equipment Configuration for Highway Construction Site Laboratory:(For details, please contact Long Hui by phone)

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Note: Longhui Company can customize a complete set of testing and inspection instruments and equipment for highway construction project site laboratories according to the needs of different customers.

Testing instruments and equipment for highway construction site laboratory Configuration list:(For details, please contact Long Hui by phone)

Configuration list:

According to the engineering requirements, if there are instruments that need to be equipped, they must be provided.

54 commonly used highway testing items, frequency, and sampling requirements in 2019:

1. Soil particle analysis, liquid limit, plasticity index, bearing ratio CBR, high dry density, Jia moisture content, natural moisture content

(1) Inspect once before starting work and once every 5000m ³ during the construction process.

(2) Natural moisture content: Check at any time before compaction and conduct a pre construction inspection. During the construction process, check every 25000m ³ and take representative samples according to T0101-2007 and T0102-2007 requirements. Woven bag, 100kg

2. Fine aggregate (for cement concrete) screening, mud content, and mud block content shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 400m ³ or 600t. Sampling shall be carried out according to T0301-2005. First, remove the non representative parts on the surface, and then take approximately equal samples from the top, middle, and bottom of the material pile to form a group of samples. When sampling the composite gradation of the mixed material, the material can also be directly taken from the mixing plant. Woven bag, 10kg

3. The screening, mud content, needle like particle content, and crushing value of coarse aggregate (for cement concrete) shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 400m ³. Woven bag, screening, etc. 30kg, crushing value material 10kg

4. Aggregate (cement stabilized or graded crushed stone) screening, mud content, needle like content, crushing value, particle composition (composite grading), plasticity index shall be inspected once per batch upon entry, and the representative quantity of each inspection batch shall not exceed 1000m ³. Woven bag, 30kg

5. The particle composition, needle like content, mud content (less than 0.075mm particle content), crushing value, density, and water absorption rate of coarse aggregate (for asphalt concrete) shall be inspected once per batch upon entry, and the representative quantity of each inspection batch shall not exceed 1000m ³. Weaving bag, screening 30kg, crushing value material 10kg, adhesion, stone acidity and alkalinity, soft stone content, if necessary. Do it when necessary

6. The particle composition, mud content (less than 0.075mm), sand equivalent, and density of fine aggregate (for asphalt concrete) shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 500m ³. Take representative samples according to JTGE42-2005 requirements. Woven bag, 10kg with sharp edges if necessary. Do it when necessary

7. Coarse aggregate (GB/T 14685-2011) is classified, categorized, nominal particle size, and daily production into batches of every 600 tons. If the daily production is less than 600 tons, it is also considered a batch. If the daily production exceeds 2000 tons, it is considered a batch of 1000 tons, and if it is less than 1000 tons, it is also considered a batch. If the daily production exceeds 5000 tons, it is considered as a batch of 2000 tons, and if it is less than 2000 tons, it is also considered as a batch.

8. The screening and moisture content of mineral powder shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 100T. The representative quantity of each inspection batch shall not exceed 500T, and representative samples shall be taken in accordance with JTJE42-2005 requirements. Cement sample bucket, 2kg apparent density, plasticity index, hydrophilicity coefficient, heating stability, if necessary. Do it when necessary

9. Cement fineness, specific surface area, water consumption for standard consistency, setting time, stability, and sand strength shall be inspected once per batch upon arrival. The representative quantity of each inspection batch shall not exceed 200T in bags and 500T in bulk. According to the T0501-2005 cement sampling method, equal amounts of samples shall be taken from more than 20 different parts as a group of samples, and a product material list shall be provided. Cement sample bucket, with a total weight of at least 6kg

10. The fineness, loss on ignition, moisture content, and sulfur trioxide of fly ash shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 200T. 10 bags shall be randomly selected from each batch, and no less than 1kg of sample shall be taken from each bag. After mixing evenly, the sample shall be reduced to four parts. Provide material list. Cement sample bucket with a weight greater than 3kg.

11. The ultimate strength, yield strength, elongation, and cold bending of steel raw materials shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 60T. Two raw materials shall be taken, and one tensile specimen and one cold bending specimen shall be cut from each. Provide material list. Take 2 tensile specimens with a length of 500mm, and 2 cold bending specimens with a length of (150+5d) mm; Grouping is tied with binding wires.

12. Under the same construction conditions, joints of the same grade, type, and specification made of the same batch of materials shall be used for the ultimate strength of steel bar mechanical connections. A batch of 500 shall be considered as an acceptance batch, and any number less than 500 shall also be considered as an acceptance batch. Three specimens shall be randomly selected for inspection. Under the same construction conditions, use the same batch of materials with the same grade, type, and specification joints, and randomly select 3 specimens for inspection.

1. Randomly cut joint specimens during the installation of steel reinforcement skeleton

2. The length L of the sleeve must be greater than or equal to 2d+10mm (d is the diameter of the steel bar) (tied with binding wire for grouping). Provide material list. Take 3 mechanical connection samples and 3 raw material samples. 50cm in length, tied with binding wire for grouping.

13. The ultimate strength of welded steel bars and flash butt welding bending shall be grouped into 300 joints of the same joint type and steel bar grade. A batch of 1500 joints of the same joint type and steel reinforcement grade shall be randomly sampled from different parts, and the flash butt welded bending specimens shall be polished on the welding surface. Grouping is tied with binding wires; Take 6 pieces for flash butt welding (including 3 pieces for cold bending, which need to be ground flat), and take 3 pieces for lap welding.

14. Ultimate strength, yield strength, elongation, relaxation test, mechanical performance test of steel strands: one inspection per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 60T. Relaxation test: one inspection per specification or model from the same manufacturer. The supervisory unit supervises and witnesses the sampling process of the construction unit, and jointly sends for outsourced testing. Each batch can select 3 discs, with one disc taken for stretching and one disc taken for relaxation; Provide material list. Grouping is tied with binding wires, each with a length of 100cm when stretched and 240cm when relaxed.

15. The appearance, hardness, and anchoring coefficient of anchor plates and clamps shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 100 sets. The supervisory unit shall supervise and witness the sampling process of the construction unit, jointly submit outsourced tests, randomly select samples from different parts, and provide material lists. Wooden or cardboard boxes; 10% and no less than 10 sets shall be selected for appearance inspection, 5% and no less than 5 sets for hardness testing, and 3 sets for static load testing.

16. The appearance tensile yield force, yield elongation, tensile force at 2% elongation, and tensile force at 5% elongation of the geogrid shall be inspected once per batch upon entry, and the representative quantity of each inspection batch shall not exceed 200 rolls. The supervisory unit shall supervise and witness the sampling process of the construction unit, and jointly submit the required samples for outsourced testing on the entire roll of material according to the T1101-2006 sampling method. Provide a certificate of conformity and material list. Grouping is tied with binding wires; Randomly select 5 rolls from the same batch of geogrid products, and cut 1 meter from each roll as a sample, for a total of 5 pieces.

17. The specifications, dimensions, unit area mass, wide strip tensile strength, elongation, burst strength, and permeability coefficient of geotextile shall be inspected once per batch upon entry, and the representative quantity of each inspection batch shall not exceed 5000 square meters. The supervisory unit shall supervise and witness the sampling process of the construction unit, jointly submit the outsourced test samples according to the T1101-2006 sampling method, cut the required samples on the entire roll of material, and indicate the length direction. Provide a certificate of conformity and material list. Grouping is tied with binding wire, 4 square meters.

18. The appearance, impact performance, ring stiffness, local lateral load, and oven test of plastic corrugated pipes and polyethylene double wall corrugated pipes shall be inspected once per batch upon arrival, with a representative quantity of no more than 10000m per inspection batch. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly send samples for outsourced testing site. The tensile sampling length is 100cm, 6 pieces, and the bending test sample is 60d, 3 pieces. Provide a certificate of conformity and material list. Grouping is tied with binding wires; Stretch sampling length 100cm, 6 pieces, bending test piece 60d, 3 pieces.

19. The appearance and physical and mechanical properties of expansion joints shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 500m. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit samples for outsourced testing according to the testing needs. Provide a certificate of conformity and material list.

20. The appearance, ultimate compressive strength, elastic modulus, aging, and turning angle of rubber bearings shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 200 pieces. The supervision unit shall supervise and witness the sampling process of the construction unit, jointly submit each batch of outsourced tests for appearance quality inspection, and then take at least 3 pieces from the qualified samples for physical and mechanical performance testing. Provide a certificate of conformity and material list. At least 3 pieces shall be subjected to physical and mechanical performance tests.

21. The appearance, ultimate compressive strength, elastic modulus, aging, and turning angle of pot type bearings shall be inspected once per batch upon arrival, and the representative quantity of each inspection batch shall not exceed 20 pieces. The supervision unit shall supervise and witness the sampling process of the construction unit, jointly submit each batch of outsourced tests for appearance quality inspection, and then take at least 3 pieces from the qualified samples for physical and mechanical properties. Provide a certificate of conformity and material list. At least 3 pieces shall be subjected to physical and mechanical performance tests. Ultrasonic testing shall be conducted once per batch upon arrival. The supervisory unit shall supervise and witness the sampling process of the construction unit, and jointly submit for outsourced testing

22. Performance inspection and homogeneity inspection of concrete admixture mixtures shall be carried out according to the production capacity and equipment conditions of the manufacturer. The products shall be numbered in batches, with each batch of admixture of the same variety with a dosage greater than 1% (including 1%) numbered as 100 tons, and each batch of admixture with a dosage less than 1% numbered as 50 tons. Admixtures with a dosage less than 50 tons may also be counted as one batch. The quantity of products from the same batch entering the site shall be considered as one inspection batch, and samples of products from different batch numbers shall be taken separately. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit the samples taken for outsourced testing to be representative. The samples shall be obtained by uniformly mixing three or more point samples in equal quantities. Provide a certificate of conformity and material list. Sampling from sealed containers; Take two samples, one for testing and one for sealing and retention. Each unit weighs more than 2.5 liters or 2.5kg.

23. The appearance, chromaticity performance, and photometric performance of contour markers shall be inspected once per batch upon arrival, with no more than 3000 per batch. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit the outsourced test for random sampling according to the requirements. Provide a certificate of conformity and material list. 5 yuan.

24. The luminous intensity coefficient and compressive load of protruding road signs shall be inspected once per batch upon arrival. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit the outsourced test for random sampling according to the requirements. Provide a certificate of conformity and material list. 6 of them.

25. The appearance, chromaticity performance, photometric performance, tensile load, and adhesion performance of the reflective film shall be inspected once per batch upon arrival. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit the outsourced test for random sampling according to the requirements. Provide a certificate of conformity and material list. 3 pieces, 20cm * 20cm

26. The appearance, geometric dimensions, and anti-corrosion coating performance of protective fences and columns shall be inspected once per batch upon entry, with no more than 10000 pieces per batch. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit the outsourced test for random sampling according to the requirements. Provide a certificate of conformity and material list. 3 sections, each 40cm long.

27. The overall tensile load of the spliced bolts shall be inspected once per batch upon arrival. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit the outsourced test for random sampling according to the requirements. Provide a certificate of conformity and material list. 8 sets, ≥ 133KN.

28. The appearance, geometric dimensions, and anti-corrosion coating performance of the isolation barrier shall be inspected once per batch upon arrival, with no more than 1000 rolls per batch. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit the outsourced test for random sampling according to the requirements. Provide a certificate of conformity and material list. 1 piece.

29. The appearance, density, non drying time, compressive strength, wear resistance, color performance, and heating stability of the marking paint shall be inspected once per batch upon arrival, with a maximum weight of 100 tons per batch. The supervision unit shall supervise and witness the sampling process of the construction unit, and jointly submit the outsourced test for random sampling according to requirements. Provide a certificate of conformity and material list. Sealed container sampling, 2kg.

30. Road petroleum asphalt density, penetration, penetration index, 15 ℃ ductility, softening point, aging test (residue after evaporation TFOT (or RTFOT))

1. Each batch shall be inspected once upon entry, and the representative quantity of each inspection batch shall not exceed 2000 tons.

During the construction period, once every two days. The supervision unit shall conduct a sampling of not less than 20% of the construction unit's asphalt according to the T0601-2000 asphalt sampling method. For fluid asphalt, a specified number of samples shall be taken from the upper, middle, and lower positions of the liquid surface. Solid asphalt should be sampled from barrels, bags, boxes, or bulk blocks at least 5cm below the surface and within the side of the container. Provide a certificate of conformity and material list. Take 5L of emulsified asphalt from a plastic bucket, and take at least 600ml of other asphalt from a 1L covered enamel cylinder. Solubility, flash point, 10 ℃ ductility, and wax content should be tested as necessary. Do it when necessary

31. Viscosity, residual content, solubility, penetration, 15 ℃ ductility, and room temperature storage stability of emulsified asphalt

1. Each batch shall be inspected once upon entry, and the representative quantity of each inspection batch shall not exceed 2000T.

During the construction period, once every two days. The supervision unit shall conduct sampling from no less than 20% of the on-site containers of the construction unit. The demulsification speed, adhesion with coarse aggregate, and mixing test with coarse and fine aggregate should be conducted when necessary. Do it when necessary

32. The penetration rate, penetration index, softening point, ductility, and elasticity recovery of modified asphalt shall be inspected once per train or daily upon arrival. The supervision unit shall conduct a sampling of not less than 20% of the construction unit's asphalt according to the T0601-2000 asphalt sampling method. For fluid asphalt, a specified number of samples shall be taken from the upper, middle, and lower positions of the liquid surface. Solid asphalt should be sampled from barrels, bags, boxes, or bulk blocks at least 5cm below the surface and within the side of the container. Take 5L of emulsified asphalt from a plastic bucket, and take no less than 600ml of other asphalt from a 1L covered enamel cylinder. When necessary, perform tests on viscosity, storage stability, segregation, TFOT (or RTFOT) residue kinematic viscosity at 135 ℃, flash point, solubility, toughness, and elasticity recovery at 25 ℃. Do it when necessary

33. The residual content, penetration, softening point, ductility (5 ℃), and viscosity of modified emulsified asphalt shall be inspected once per vehicle upon arrival. The storage stability is maintained every 5 days. The supervision unit shall conduct random inspections of not less than 20% solubility, storage stability, emulsion breaking speed, adhesion with coarse aggregates, and mixing tests with coarse and fine aggregates as necessary. Do it when necessary

34. Asphalt mixture mineral gradation: Each mixer shall be used twice a day, and random inspections shall be conducted as necessary. The supervision unit shall conduct at least one inspection per day, and if necessary, may conduct random inspections of the T0701-2000 asphalt mixture sampling method and components at any time. Sampling grading and asphalt dosage shall be taken as 10kg. Marshall specimens shall be no less than 4 per group. A set of 3 ruts. Asphalt dosage (oil stone ratio): Each mixer should be used twice a day, and random inspections should be conducted if necessary. The supervision unit shall inspect the porosity, stability, and flow rate at least once a day, and if necessary, at any time. Each mixer shall be inspected twice a day, and the average value of four samples shall be evaluated. The supervisory unit shall conduct random inspections at least once a day and if necessary, at any time

35. Compressive strength of cement concrete

Three specimens per group. The number of groups produced should comply with the following regulations:

Concrete of different strength grades and mix proportions should be randomly sampled at the pouring site and specimens should be prepared separately.

When pouring structures of general volume (such as foundations, piers, etc.), two sets should be prepared for each unit structure.

When pouring large volume structures continuously, 2 sets should be produced every 80-200m ³ or per work shift.

The main components of the upper structure with a length of less than 16m should be produced in one group, 16-30m in two groups, 31-50m in three groups, and over 50m in no less than five groups. At least 2 sets of small components should be produced for each batch or work shift.

At least 2 sets should be produced for each drilled pile; There shall be no less than 3 groups of piles with a length of more than 20m; When the pile diameter is large and the pouring time is long, there should be no less than 4 groups. When changing work shifts, two sets should be produced for each shift.

At least 2 sets of structures such as small bridges, culverts, retaining walls, and sound barriers should be selected for each building, location, or work shift. When the raw materials and mix proportions are the same and mixed at the same mixing station, several or multiple locations can be combined to produce two groups.

According to the construction needs, several sets of specimens with the same curing conditions as the structure should be prepared separately as the strength basis for the construction stages such as demoulding, hoisting, prestressing, and load-bearing.

36. For the compressive strength of sprayed concrete, at least one set (3 pieces) of specimens should be taken from the arch and side walls every 10 linear meters of a single tunnel with two or three lanes. For other projects, there shall be no less than one independent project for spraying 50-100m ³ of mixture or less than 50m ³ of mixture. When there is a change in materials or mix proportions, new specimens should be prepared.

37. Flexural tensile strength of cement concrete: two to four groups shall be made for each shift of expressway and first-class highway: two groups shall be taken if the daily progress is less than 500m, three groups shall be taken if the daily progress is more than 500m, and four groups shall be taken if the daily progress is more than 1000m. For other highways, 1-3 groups are produced per work shift: 1 group is selected for daily progress<500m, 2 groups are selected for daily progress ≥ 500m, and 3 groups are selected for daily progress ≥ 1000m. The average value of three specimens in each group is used as a statistical data.

38. The compressive strength of cement mortar shall be tested by the supervision unit at least 20% of the construction unit's sampling for each structure in each work shift. If necessary, different strength grades and mix proportions of mortar can be randomly tested at the pouring or mixing site.

According to the standard curing for 28 days, the specimen has a side length of 70 A 7mm cube with 3 specimens per group. The number of groups produced should comply with the following regulations:

Cement mortar of different strength grades and mix proportions should be randomly sampled and specimens should be prepared separately.

Two sets of important and main masonry structures should be prepared for each work shift.

3 general and minor masonry structures, one set can be produced per work shift.

The number of test piece groups should not be less than 3.

The 5 arch ring mortar should be simultaneously prepared and cured under the same conditions as the masonry to check the strength of each construction stage.

39. The strength of cement-based slurry shall be based on the 28 day standard curing specimen, which is a 40mm × 40mm × 160mm prism with 3 specimens per group. The number of groups produced should comply with the following regulations:

Cement slurries of different strength grades and mix proportions should be randomly sampled and specimens should be prepared separately.

Each work shift is assigned one group; If the usage exceeds 10m ³, one set should be prepared for every 10m ³.

Three pairs of pile foundation grouting should be carried out, and one set should be taken for each pile at a time.

Four pairs of prestressed pipelines should be grouted, and at least one set should be prepared each time or every 25 pipes.

5 pairs of anchor rods should be grouted, and at least 1 set should be prepared for each or every 50 rods.

40. The tensile bond strength between the waterproof layer and the concrete, as well as the number and arrangement of measuring points, shall comply with the following regulations:

When the area of a construction section is not more than 500 square meters, measure 5 points. If it exceeds 500 square meters, add 2 points for every additional 500 square meters. The length of the waterproof layer bridge deck for each continuous construction is one construction section.

Two measuring points should be randomly arranged with a spacing of no less than 5 0m.

41. Cement stabilized material: cement dosage, mixture gradation, moisture content, unconfined compressive strength, dry density, and moisture content

(1) Cement dosage: One group is randomly inspected every 2 hours at each mixing station, and can be inspected at any time if suspected (two parallel tests per group).

(2) Grading of mixture: At least 2 groups per mixing station per day, and random inspections can be conducted at any time in case of suspicion.

(3) Mixing plant moisture content: at least once every 2000m2.

(4) Unconfined compressive strength: Samples should be taken at the specified frequency on site, and specimens should be prepared according to the compaction degree predetermined by the construction site. Prepare one set of specimens every 2000 square meters or per work shift. Regardless of whether it is stable fine-grained soil, medium grained soil, or coarse-grained soil, when the multiple deviation coefficient Cv is less than 10%, there can be 6 specimens; When Cv=10% to 15%, there can be 9 specimens; When Cv>15%, there should be 13 specimens.

(5) Dry density and moisture content: Same mix ratio and material yard, once. If suspected, random inspection can be conducted at any time.

The supervision unit shall conduct random inspections of not less than 20% of the construction unit's samples. If necessary, random samples of woven bags and 100kg of mixed materials produced at the same mixing station with the same mix ratio and material yard shall be taken at the paving site

42. The thickness and integrity of the core drilling at the grassroots level shall be measured at 2 points every 200m on the dual carriageway. The supervision unit shall conduct random inspections, which shall not be less than 20% of the construction unit's. If necessary, random inspections may be conducted at any time in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"

43. Measure the compaction degree of the roadbed at 2 points every 200m and every two lanes of compacted layer; The supervision unit shall conduct random inspections of no less than 20% of the construction unit, and if necessary, sampling points may be selected at any time in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"; During the construction process of the "Technical Specification for Highway Roadbed Construction", each layer should be inspected for compaction degree with a frequency of at least 2 points per 1000m2. If it is less than 1000m2, 2 points should be inspected, and if necessary, additional inspection points can be added as needed.

44. The compaction degree of the cushion layer is 2 places per 200m and every two lanes; The supervision unit shall conduct random inspections of no less than 20% of the construction unit, and may conduct random inspections at any time if necessary, selecting measuring points in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"

45. The compaction degree of the subgrade and base layer is 2 points per 200 meters per two lanes; The supervision unit shall conduct random inspections of no less than 20% of the construction unit, and may conduct random inspections at any time if necessary, selecting measuring points in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"

46. The compaction degree of asphalt concrete surface layer shall be measured at 1 point every 200m, and the nuclear (non nuclear) density meter shall be measured at 1 point every 200m, with 5 points at each point; The supervision unit shall conduct random inspections of no less than 20% of the construction unit, and may conduct random inspections at any time if necessary, selecting measuring points in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"

47. The compaction degree of the back of the platform is 24 points per 50 square meters for each compacted layer. If it is less than 50 square meters, at least 4 points should be sampled by the supervision unit. The sampling rate should not be less than 20% of the construction unit. If necessary, sampling points can be selected at any time according to the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"

48. The permeability coefficient of asphalt concrete is measured at one point every 200m on two lanes; The supervision unit shall conduct random inspections of no less than 20% of the construction unit, and may conduct random inspections at any time if necessary, selecting measuring points in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"

49. The anti-skid friction coefficient of asphalt concrete shall be measured at one point every 200m on two lanes, and the supervision unit shall conduct random inspections of not less than 20% of the construction unit. If necessary, random inspections may be conducted at any time in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"

50. The depth of the structure shall be measured at one point every 200m for two lanes, and the thickness of the surface layer shall be measured at one point every 200m for two lanes. The supervision unit shall conduct random inspections, which shall not be less than 20% of the construction unit. If necessary, random inspections may be conducted at any time in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements"

51. The thickness of the asphalt surface layer shall be measured at one point every 200m on two lanes. The supervision unit shall conduct a sampling inspection of not less than 20% of the construction unit. If necessary, sampling inspection can be carried out at any time according to the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements".

52. The thickness of the cement concrete surface layer board shall be measured at 2 points every 200m of the two lanes. The supervision unit shall randomly inspect no less than 20% of the construction unit, and if necessary, random inspections may be conducted at any time to select measuring points in accordance with the requirements of JTG E60-2008 "On site Testing Regulations for Highway Roadbeds and Pavements".

53. For each two lane evaluation section (not exceeding 1km), there are 40 measurement and inspection points for the FWD (FWD); Automatic deflectometer or Beckman beam 80 points

54. The tunnel laser section meter mainly consists of three parts: detection host, handheld computer, and data processing software. The main technical parameters are as follows:

1. Detection radius: 1-45m.

2 detection points: automatic detection, usually 35 points/section.

Distance measurement accuracy: better than ± 1mm.

Angle measurement accuracy: better than 0 01 °.

5 azimuth range: 30 °~330 ° (the instrument probe is 0 ° vertically downwards), continuous measurement is 60 °~300 °.

6. Manual probe rotation azimuth range: 0 ° to 350 °.

7. Positioning measurement method: It has vertical downward laser centering mark and distance measurement function.

Longhui CompanyMain production and supply: testing instruments and equipment for highway construction site laboratories, highwaysHighway testing equipmentequipmentSeries, commodity concrete mixing plant testing equipment, commercial concrete mixing plant testing equipment, asphalt mixing plant testing equipment, concrete drilling and coring machine series, fully automatic curing room equipment series, constant temperature and humidity standard curing box series, cement concrete pressure testing machine series, universal material testing machine series, concrete single axis mixer series, cement electric flexural testing machine series, electric blast drying oven series, concrete freeze-thaw testing machine series, cement testing and inspection equipment, concrete testing and inspection equipment, asphalt testing and inspection equipment, highway testing and inspection equipment, geotechnical testing and inspection equipment, mortar testing and inspection equipment, non-destructive testing equipment. We can set up complete sets of instruments and equipment for first, second, and third level laboratories for our clients and friends (commercial concrete mixing plant instruments and equipment). Our products (except for vulnerable parts) are covered by a one-year warranty. If there are any quality problems within six months (except for user operated reasons), they will be replaced and repaired for life.

Longhui Company specializes in contracting:
A. Design and equipment configuration business for laboratories A, B, and C.
B. Design and equipment configuration business for P1, P2, and P3 level laboratories.
The integrity, strength, and product quality of Hebei Longhui Highway and Railway Testing Instrument Factory have been recognized by the industry. Welcome friends from all walks of life to visit, guide and negotiate business. We will be dedicated to serving you.

List of technical standards, testing procedures, and specifications implemented by the construction site laboratory:

Hebei Longhui Highway and Railway Test Instrument Factory mainly supplies:Laboratory instruments and equipment for highway construction sites, NJCL-L type rapid detection instrument for chloride ion content in sea sand and fresh concrete [additive], floor thickness gauge, pile foundation dynamic tester, steel bar position tester, chloride ion content tester, concrete vibration table, cement slurry mixer, concrete rebound tester, non-metallic ultrasonic testing analyzer, steel bar scanner, pile foundation dynamic tester, chloride ion content tester, lateral pressure gauge, concrete thickness gauge, asphalt combustion furnace, nuclear moisture density meter, crack width gauge, crack depth gauge, steel corrosion meter, non-metallic ultrasonic testing instrument, non nuclear density humidity meter, nuclear density meter, reflective sign retroreflection coefficient tester, reflective marking retroreflection coefficient tester, protruding road sign luminous intensity measurement, concrete chloride ion density meter Content analyzer, concrete alkali content analyzer, concrete freeze-thaw testing machine, Concrete carbonation test box, concrete dynamic analyzer, concrete magnetic vibration table, concrete mixing plant test instrument, commercial concrete mixing plant test instrument, concrete and cement air content measuring instrument, cement test grinder, concrete mixer, cement chloride ion content measuring instrument, electric hydraulic demoulder, electric compaction instrument, concrete standard curing box, cement slurry mixer, cement mortar mixer, cement mortar vibration table, cement mortar flowability measuring instrument, cement pressure testing machine, concrete pressure testing machine, universal material testing machine, cement constant stress testing machine, and various asphalt experimental instruments.
Concrete and mortar testing instruments:
Concrete mixer, concrete impermeability tester, standard curing room, fully automatic control device, mortar mixer, concrete coring machine, concrete curing box, rock cutting machine, sawing machine, concrete mixture, Weber consistency meter, electric hot air drying box, concrete core sample slicing machine, mortar testing instrument, testing ruler series, concrete slump cylinder, concrete core sample grinding machine, water cement ratio tester, gas content tester, disc liquid limit tester, needle gauge tester, stone crushing value tester, mortar setting time tester, mortar consistency tester, concrete accelerated curing box, double headed grinding machine, accelerated polishing machine, Los Angeles shelf wear tester, masonry mortar strength point load tester, mortar impermeability tester, concrete pressure bleeding tester, concrete alkali aggregate testing box, lime, Brick and tile explosion steaming box, low-temperature test box, concrete shrinkage and expansion rate measuring instrument, concrete elastic modulus measuring instrument, concrete penetration resistance measuring instrument, concrete vibration table, commonly used testing instruments for concrete mixing plants, and commonly used testing fixtures for concrete mixing plants
Concrete durability testing equipment:
Chloride ion content tester, building adhesive tensile testing machine, knife edge restraint early cracking testing equipment, concrete strength pull-out tester, vacuum saturation saturation equipment, concrete resistivity tester, concrete rapid freeze-thaw testing machine, concrete shrinkage deformation tester, concrete creep tester, concrete sulfate dry wet cycle testing equipment, concrete chloride ion diffusion coefficient tester, concrete carbonation test box, chloride ion electric flux tester, dynamic kinetic analyzer, concrete alkali content rapid tester
Non destructive testing instruments for construction quality:
Non metallic ultrasonic testing instrument, steel reinforcement protection layer thickness measuring instrument, concrete crack depth measuring instrument, concrete crack width measuring instrument, steel corrosion measuring instrument, floor thickness measuring instrument, concrete strength measuring instrument, concrete thickness measuring instrument, rebound measuring instrument, bond strength measuring instrument, building leakage detection instrument, concrete crack comprehensive measuring instrument, portable building electronic thermometer, roof and wall humidity measuring instrument, concrete mortar moisture content measuring instrument, steel bar gauge, masonry in-situ press machine, anchor rod pulling instrument, anchor rod tension meter, penetration mortar strength measuring instrument, and new concrete comprehensive performance measuring instrument
Asphalt and asphalt mixture testing instruments:
Cleveland Flash Point Tester, Electric Sand Equivalent Tester, Asphalt Brittle Point Tester, Fully Automatic Asphalt Extraction Tester, Asphalt Viscometer Series, Asphalt Penetration Tester, Asphalt Softening Point Tester, Asphalt Combustion Furnace
Cement testing equipment:
Cement mortar test block electric flexural testing machine, cement standard curing box, Le Chatelier boiling box, permeability specific surface area measuring instrument, specific surface area measuring instrument, disc grinding machine, cement E-type grinding testing machine, cement testing small grinding machine, electric heating and steaming kettle, cement rapid curing box, Le Chatelier clamp measuring instrument and Le Chatelier clamp measuring instrument for cement viscosity and setting time, cement composition measuring instrument, cement ratio length meter, mixing station photometer, cement chloride ion analyzer, cement free calcium oxide measuring instrument, hydraulic electric demoulder, cement mortar mixer, cement slurry mixer, cement negative pressure sieve analyzer, cement mortar compaction table, cement mortar flowability measuring instrument
Geotechnical testing instruments:
Electric compaction tester, flat load tester, pavement material strength tester, road strength tester, CBR bearing ratio tester, soil liquid plastic limit tester, soil relative density tester, multifunctional direct reading calcium meter, geotechnical vibrating screen machine, lightweight and heavy-duty penetration tester, geotechnical sieve, sand and gravel sieve rebound modulus tester, mud three piece set, lime soil unconfined press, free expansion rate tester, surface vibration compactor, constant head soil permeameter
Highway, bridge, pile foundation testing instruments:
Pendulum Friction Coefficient Tester, Ground Bearing Capacity Field Tester, Fill Density Field Tester, Non nuclear, Nuclear Moisture Meter, Pile Foundation High and Low Strain Tester, Eight Wheel Flatness Meter, Cross hole Ultrasonic Pile Tester, Pile Foundation Static Load Tester, Road Surface Moisture Permeation Meter, Road Surface Depth Constructor, Bridge Deflection Meter, Laser Tunnel Sectional Meter
Plastic trial mold, metal trial mold:
Cement sand test mold, cement soft mixing test mold demolding tool 100 square plastic test mold, cast iron test mold 150 square plastic test mold, cast iron test mold 70.7 mortar test mold, concrete frost resistance test mold