Guangzhou Reinforcement Construction - Carbon Fiber Reinforcement - Reinforcement Material Manufacturer

Guangzhou reinforcement construction-Carbon fiber reinforcement-Reinforcement material manufacturer

Why reinforce houses:

Building reinforcement is mainly driven by various needs such as safety, functionality, and economy. The following are specific reasons:

Safety requirements

‌Structural aging‌The bearing capacity of building materials decreases over time and needs to be restored or improved for safety through reinforcement.

‌design flaw‌Some buildings have design defects or do not meet current standards and regulations, which need to be addressed.

‌natural disaster‌Earthquakes, typhoons, and other disasters may damage structures, but reinforcement can enhance disaster resistance.

Functional expansion requirements

‌Changes in usage requirements‌If elevators, mezzanines, or changes in usage (such as office to commercial) are added, the structural load-bearing capacity needs to be enhanced.

‌Equipment update‌New loads such as heavy equipment installation require corresponding structural reinforcement.

Compliance with regulations

‌Compliance check‌Regular inspections may require reinforcement of buildings with potential hazards.

‌urban planning‌After renovation or implementation of new standards, old buildings must meet the standards.

Economic and Environmental Efficiency

‌prolong life‌Reinforcement can avoid the high cost of demolition and reconstruction, and save resources.‌

‌Preservation of Historical Buildings‌Preserve the original appearance and historical value of the building, in line with the concept of sustainable development

choiceCarbon fiber cloth specifications：

1. Carbon cloth for special building reinforcement generally weighs 200g and 300g per square gram, with corresponding thicknesses of 0.111MM and 0.167MM.

2. The width is generally 100MM, 150MM, 200MM, 250MM, 300MM, 500MM, and other widths can be customized.

3Carbon fiber cloth is used together with epoxy resin, also known as carbon fiber adhesive, for building reinforcement and strengthening. The theoretical proportion of the supporting system is1Kg/㎡, which means one square meter of carbon fiber cloth needs to be matched with carbon fiber adhesive1kg(AB)glue.

Advantages of reinforcement:

High unidirectional tensile strength, it is ordinary steel reinforcement710About times.

Lightweight, only made of ordinary steel bars1/4It can be manually operated without the need for large machinery or equipment; Paste on the surface of the structure, with fast construction speed and short cycle, has little impact on the daily life and production of the reinforced structure, and almost does not increase the quality of the original structure.

High elastic modulus, especially for those with high elastic modulus(Carbon fiber sheet)It can play a significant role in reinforcing structures.Carbon fiber board:Area and quality are available200g/㎡、300g/㎡、600g/㎡, with calculated thicknesses of0.111mmThe0.167mmThe0.333mmThe thickness of carbon fiber board is usually1.0mm, maximum not exceeding2.0mm.

Stable performance in humid and corrosive environments, due to the chemical stability of fiber-reinforced composite materials and bonding resins, they can resist corrosion from acids, alkalis, salts, and water. Widely used in bridge and other engineering projects; Excellent construction performance, easy to cut, and high adaptability to the required shape and size; Small size, requiring operational space for constructionaccording to requirementsCan meet.

Application scope: Reinforcement of building beams, columns, and floor structures; Bridge, pier, and deck structure reinforcement; Tunnel and chimney structure reinforcement;Anti corrosion and reinforcement of beach buildings; Civil buildings, industrial buildings, municipal roads and bridges, water conservancy engineering, power engineering, etc.

skillSurgical points:

①When reinforcing under bending, the direction of the fibers should be consistent with the direction of the applied force;

②During shear reinforcement and seismic reinforcement, the fiber direction should be perpendicular to the axial direction of the component;

③When reinforcing under bending and shear, the strength grade of concrete should not be lower thanC15；

④When using closed bonded carbon fiber reinforced concrete columns, the concrete strength grade should not be lower thanC10；

⑤The effectiveness of carbon fiber reinforcement mainly depends on the fiber bonding process, which should be carried out by a professional construction team.

Construction safety precautions:

1Carbon fiber cloth is a conductive material, and it should be placed and constructed away from electrical equipment and power sources, and reliable protective measures should be taken.

2During storage, transportation, and construction, bending of carbon cloth should be avoided.

3Carbon fiber cloth matching resin should be stored in a sealed manner,Keep away from fire,Avoid direct sunlight and places with high temperature sources.

4The preparation and use of resin should be kept well ventilated.

5The on-site construction personnel should take corresponding effective protective measures.

Quality requirements:

1．All incoming materials, including carbon fiber materials and bonding materials, must comply with quality standards and have factory product certificates, meeting the requirements of engineering reinforcement design.

2． Carbon fiber materials should not be compressed during transportation and storage to prevent damage to the carbon fibers, nor should they be directly exposed to sunlight and rain. Adhesive materials should be stored in a cool and sealed manner.

3． The construction quality of each process is guided and supervised by technical personnel. After each process is completed, it must be inspected and approved by the technician before proceeding to the next process.

4．The bottom layer coating should be evenly applied and not missed. It is strictly prohibited to apply under unsuitable temperature conditions. The diluted coating with solvents should be used up within the specified time. temperature below7℃Relative humidityRH<85%The surface moisture content of concrete is8%When there is no condensation phenomenon, modified epoxy resin must be used.

5．The surface of the component must be repaired with epoxy putty to level the small holes and interior corners on the surface of the structure. If there are still uneven and rough lines on the surface after the putty is applied, they should be smoothed with sandpaper.

Paste carbon fiber:

①When pasting carbon fiber materials, the following conditions must be met:aCarbon fiber materials should be cut according to regulations.bThe temperature, humidity, and surface moisture content of the components meet the requirements.cThe bottom coating and putty have reached finger touch drying (the resin surface has solidified and hardened).dThe type of bonding resin should be suitable for the temperature during construction. The main agent, curing agent, and curing accelerator should be accurately weighed according to the specified ratio, loaded into a container, and stirred evenly with a mixer. The amount of each mixing should be used up within the specified time.

②Quality inspection standards for carbon fiber bonding.aThe bottom coating and top coating are well immersed in carbon fiber bundles.bCarbon fiber is tightly bonded.cFor diameters within10mmabove30mmThe following hollows are less than per square meter10Can be considered qualified; If per square meter10If there are more than one, it is considered inappropriateGe needs to be repaired. For diameters inAny hollow drum above 30mm that appears is considered unqualified and needs to be repaired. d、 The overlapping length along the fiber direction shall not be less than 20cm, and the overlapping parts between each layer shall not be located on the same straight line. The layers must be staggered by at least 50cm. The specifications of carbon fiber material, pasting position, length, width, fiber direction, and number of layers shall comply with the regulations.

Technical parameters of carbon fiber cloth ：

Product model, strength level, weight in grams(g/m2) Theoretical thickness (mm) Tensile strength (MPa) Elastic modulus (GPa) Elongation (%)

Gao QiangGrade I 200(g/m2)0.111(mm)≥3400(MPa)≥240（GPa）≥1.7（%）

Gao QiangGrade I 300(g/m2)0.167(mm)≥3400(MPa)≥240（GPa）≥1.7（%）

Gao QiangLevel II 200(g/m2)0.111(mm)≥3000(MPa)≥210（GPa）≥1.5（%）

Gao QiangLevel II 300(g/m2)0.167(mm)≥3000(MPa)≥210（GPa）≥1.5（%）

Carbon fiber reinforced concrete crack technology for widths greater thanA 0.2mm independent through crack is reinforced using pressure grouting structural adhesive, while carbon fiber is pasted along the tensile direction or perpendicular to the crack direction to form a new composite on the structure to be reinforced. This enhances the crack resistance or shear resistance of the structure by strengthening the adhesive material together with the original reinforced concrete, improving its strength, stiffness, crack resistance, and elongation.

I-beams commonly used for foundation repair can withstandA tensile force of 136~181kN is applied to prevent wall bending, while a 10cm wide carbon fiber strip can withstand 8 to 10 times this pressure, with a thickness of only 3.2mm.

Using carbon fiber to repair cracks in houses has the following advantages:

a、 Lightweight, thin in thickness, and does not significantly increase the structural weight or cross-sectional dimensions.

b、 Widely applicable and highly flexible, it can be used for reinforcing various types and shapes of structural components.

c、 The construction is convenient and fast, does not require large machinery, does not involve wet operations, does not require hot work, does not require other fixing measures, and is not limited by the original structural shape.

d、 High durability, as it does not rust, it is very suitable for use in high acid, alkali, salt, and atmospheric corrosive environments.