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FRP composites in structural reinforcement
At present, the commonly used reinforcement methods in China are mainly FRP composite reinforcement, steel plate bonding, enlarged cross-section and other methods. From the above analysis, FRP composite reinforcement method has obvious advantages, and has good economic benefits, will be widely used in structural engineering.
2020-01-11 09:03
Application technology of FRP strengthening
Sticking fiber reinforced polymer(FRP) composite strengthening system in the tensile area of concrete structure can effectively improve its bearing capacity and restrain crack propagation.
2020-01-11 09:05
FRP composites in infrastructure and civil engineering
With the development of social economy in China, the scale and quantity of civil engineering projects are increasing. As a new type of material, FRP(fiber reinforced polymer) composites have been widely used in civil construction and infrastructure engineering
2020-01-11 09:07
FRP material used in Civil Engineering
With the rapid development of economy and the rapid development of civil engineering, the market demand of FRP materials will be increasing.
2020-01-11 09:07
Beams strengthened with fiber reinforced polymer(FRP)
A large number of concrete bridges in China have local or overall damage, which needs to be repaired and strengthened. It is an effective reinforcement method to reinforce damaged concrete bridge with adhesive fiber reinforced polymer(FRP)
2020-01-11 09:12
FRP strengthening or steel plate reinforcement
In structural reinforcement, FRP composite strengthening and steel plate strengthening are two commonly used methods in concrete structures. In the selection of reinforcement schemes, the two methods often appear simultaneously. From the point of view of the mechanism of action, the two reinforcement methods are formed by structural adhesive and concrete base material as a whole, and the two methods are similar in construction technology, often causing certain obstacles to the choice of methods.
2020-01-11 09:14
Why wrap carbon fiber fabric?
Carbon fiber wrapping, at present the main reason is "carbon fiber heat" or can be said to be "carbon fiber line heat", do not say how the performance of the first, simply coated words, mainly forced high. Secondly, the combination of carbon fiber fabric and resin has a certain strength and hardness, and has a certain significance of protection.
2020-01-11 09:17
Problems of steel jacketing in concrete reinforcement
External bonding steel plate or steel jacketing reinforcement method is a kind of reinforcement method of wrapping steel around reinforced concrete beams and columns. Steel jacketing reinforcement method can greatly improve the bearing capacity of the original member on the basis of increasing the section size of few members.
2020-01-11 09:19
Concrete column strengthening method with different stress
In fact, in addition to the different modes of stress, the selection of concrete column reinforcement scheme is related to multiple factors. The scheme selection should also take into account the specific characteristics, technical and economic conditions of the original structure.
2020-01-11 09:26
RC beams strengthened with prestressed FRP plates
The application of prestressed fiber reinforced polymer (FRP) plates to the reinforcement and repair of civil structures can improve the engineering efficiency and the stress state of members.
2020-01-11 09:29
Beams Strengthened with Prestressed CFRP Strip
Reinforcement of reinforced concrete members with embedded prestressed FRP plates can significantly improve the mechanical properties of reinforced concrete members, and its mechanism and effect are similar to that of external prestressed FRP plates.
2020-01-11 09:30
Two layer CFRP reinforcement
Compared with single-layer CFRP, double-layer CFRP bears higher tensile stress, so it needs higher performance colloid to ensure the overall force.
2020-01-11 09:35
Structural strengthening, these are the key points!
Structural strengthening, these are the key points! Foundation treatment, bond steel plate reinforcement, rebar anchorage, carbon fiber fabric reinforcement, crack repair
2020-01-11 09:38
Bearing capacity reinforcement and seismic strengthening
Structural strengthening can not only improve the bearing capacity and durability of the structure, but also improve the seismic capacity. So can it be considered that conventional structural strengthening can simultaneously enhance the bearing capacity and seismic capacity, the two can be treated the same?
2020-01-11 09:41
Why use small PAN tow fiber for structural reinforcement?
The tensile strength of the tow is very stable, the dispersion is small, and the coefficient of variation is below 5%. It is easy to control the performance and quality of the tow effectively in the process of production and use.
2020-01-11 09:44
Strengthening concrete beams with FRP composite
At present, it is very common to use carbon fiber reinforced polymer (CFRP) composite to reinforce bridges, especially when the structure is in corrosive environment, it is more suitable to use this kind of composite material to reinforce bridges.
2020-01-11 09:48
The ‘k’ number of carbon fiber fabric
We can tell ourselves how much K the carbon fiber fabric is. You can do it yourself !!
2020-01-11 09:50
Structural retrofitting using FRP laminates
Cut the precured FRP laminate according to the design size. When cutting, some carbon fiber laminate should be lengthened about 150 mm for normal tensile bond strength test, taking into account the need of field inspection.
2020-01-11 09:54
The effect of bonding steel plate reinforcement
If the area of a single empty drum is less than 10,000 mm2, it can be repaired by filling glue with borehole injection method; if the area of a single empty drum is more than 10,000 mm2, it should be removed and re-pasted steel plate with structural bonding adhesive, and re-checked and accepted.
2020-01-11 09:58
Key points of FRP composite strengthening
Before FRP composite strengthening, please reconfirm whether the concrete repair surface is clean and no foreign matter. After confirmation, make sure that the bottom glue is evenly applied on the top and bottom glue, otherwise there will be bubbles in the later carbon fiber composite materials.
2020-01-11 10:02