T0507-2005 Test method for flowability of cement mortar
Purpose, Scope of Application, and Reference Standards
This method specifies the test method for the flowability of cement mortar
This method is applicable to general Portland cement, road Portland cement, and other types of cement that use this method
Reference standard:
Test method for strength of cement mortar (ISO method) (T0506)
Planetary cement mortar mixer (JCT681)
2 Instruments and materials
2.1 Sand mixer: It should comply with the provisions of the current "Planetary Cement Mortar Mixer" (JCT681).
22 Cement sand flowability tester (referred to as jumping table): The technical requirements and installation method should comply with the provisions of Appendix T0507A.
23 trial mold: made of metal material, consisting of a truncated cone circular mold and a mold sleeve. The inner wall of the truncated cone circular mold must be smooth, with a height of 60mm and 0.5mm; Upper inner diameter 70mm0.5mm; Inner diameter of lower mouth 100mm 05mm: outer diameter of lower mouth 120mm. The mold sleeve is used in conjunction with a truncated cone circular mold
24 ramming rod: made of metal material, with a diameter of 20mm and 0.5mm, a length of about 200mm, the bottom of the ramming rod is at a right angle to the side, the lower part is smooth, and the upper handle is rolled
2.5 Calipers: measuring range of 200mm, division value of 05mm
2.6 Small knife: The blade is straight and the length is greater than 80mm
27 stopwatch: division value of 1 second
Test preparation
3.1 Material Preparation
The dosage of adhesive sand material shall be determined according to the corresponding standard requirements or experimental design. The cement sample, standard sand, test water, and test conditions shall comply with the provisions of T0506
3.2 Preparation of adhesive sand
Preparation should be carried out according to the relevant regulations in T0506
4 Experimental steps
If the jumping table is not used within 24 hours, jump empty for 25 cycles first
While preparing the adhesive sand, use a damp cotton cloth to wipe the jumping table surface, the inner wall of the test mold, the tamper, and the tools in contact with the adhesive sand. Place the test mold in the center of the jumping table surface and cover it with a damp cotton cloth
Divide the mixed mortar into two layers and quickly load it into the flow test mold. The first layer is loaded to a height of about 23 meters above the truncated cone mold. Use a small knife to make 5 cuts in two perpendicular directions, and use a pestle to evenly compact 15 times from the edge to the center. Then, install the second layer of mortar, which is about 20mm above the truncated cone mold. Make 10 cuts with a small knife, and use a pestle to evenly compact 10 times from the edge to the center. The compaction force should be just enough to fill the truncated cone mold with mortar. Compaction depth: The first layer should be compacted to 12 degrees above the height of the adhesive sand, and the second layer should not exceed the surface of the compacted bottom layer. The compaction sequence is shown in Figure T0507-1 and Figure T05072. When filling and compacting the adhesive sand, hold it steady with your hands and do not move it.

Figure T0507-1 First layer compaction sequence Figure T0507-2 Second layer compaction sequence
After the compaction is completed, remove the mold sleeve and use a small knife to scrape off the adhesive sand that is higher than the truncated cone round mold from the middle to the edge twice, and smooth it out. Wipe off the adhesive sand that falls on the table. Gently lift the truncated cone mold vertically upwards and immediately start the jumping table. Once per second, complete 25 jumps within 25ls
After 45 beats, measure the maximum diffusion diameter of the bottom surface of the cement mortar and the diameter perpendicular to it with a caliper, calculate the average value, accurate to 1mm, which is the fluidity of the cement mortar for that water volume. The flowability test must be completed within 6 minutes from the start of sand mixing to the end of measuring the diffusion diameter
When there is a dispute between the test results of electric table jumping and manual table jumping, the electric table jumping shall prevail.
5 Test Reports
The test report should include the following contents
(1) Name of the required testing item
(2) Variety, specifications, and place of origin of raw materials
(3) Sample number
(4) Test date and time
(5) Name, model and number of the instrument and equipment
(6) Environmental temperature and humidity
(7) Execution standards
(8) Types of sand used
(9) Fluidity of cement mortar

Appendix T0507A Jumping Table and Its Installation
This appendix specifies the technical requirements and installation methods for jumping tables, applicable to the structural design and performance testing of jumping tables
1 Technical requirements
A. 1.1 The jumping table (Figure T0507A1) is mainly composed of a jumping part and a frame part.
Image T0507A-1 Jumping Table

A. 1.2 The jumping part is composed of a circular tabletop and a push rod. The total weight is 435kg015kg, and it is evenly distributed around the push rod. The diameter of the circular tabletop is 300mm, made of cast steel with a hardness of not less than 200HB, and the edge thickness is about 5mm. The upper surface should be smooth and flat, and plated with hard chromium. The surface roughness Ra is between 0.8 and 1.6 μ m. There is a 125mm diameter engraved circle on the left center to determine the position of the conical test mold. There are 8 lines pointing from the outer edge of the disk to the center, distributed 45 degrees apart. There are six radiating ribs on the desktop, distributed 60 degrees apart. The flatness of the disc surface should not exceed 0.1mm. When the jumping part falls, the tugboat should not disengage from the cam. The jumping distance of the table is 100mm ± 0.2mm. The tolerance gap between the push rod and the rack hole is 0.05-0.10mm
A. The 13 cam (Figure T0507A2) is made of steel, and its outer surface contour line should conform to the Archimedes spiral. Its radius should rise uniformly from 27mm to 39mm within 360 °, and the outer surface of the cam should be smooth. T0507A-2 cam schematic diagram (size unit: mm)

The A14 rack is a sturdy unit made of steel, with three reinforcing ribs spaced 120 degrees apart extending the entire height of the rack. Circular precision grinding around the rack holes. The axis of the rack hole should be perpendicular to the surface of the disc. When the disc falls and the frame is released, the contact surface should remain smooth and parallel to the upper surface of the disc, while also making contact within a 360 degree range
The A15 rotating shaft is connected to a motor or manual wheel with a speed of 60 rpm and no external reduction device. Its rotating mechanism can ensure that the jumping table can complete 25 jumps within 25 seconds.
The A16 jumping table base has three holes with a diameter of 12mm for connection with the base, and the three holes are distributed on a side length of
On a 200mm circle.
A. Installation and maintenance
A. 2.1 Jumping tables should be installed on a hardened horizontal concrete base using expansion bolts. The base is made of ordinary concrete pouring, with a base of about 400mm x 400mm and a height of about 690mm
The A22 push rod and its shaft hole must be kept clean and lightly lubricated. There should be no oil on the contact surface between the disc and the frame. Applying oil on the cam surface can reduce operational friction
A. 3 Verification
The installed jumping table is calibrated with a standard sample (JBW01-1-1), and if the measured flowability value differs from the flowability given by the standard sample within the specified range, the performance of the jumping table is qualified.