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Bridge cracks repair methods
Once the crack appears, it will affect the structural durability, will directly affect the bearing capacity of the structure, and even endanger the safety of the structure. It is worthy of attention and should ascertain the cause of cracks,we must take appropriate measures to repair.
2020-01-13 09:02
Difference between FRP strengthening and traditional methods
Why is CFRP reinforcement more and more popular among engineers? it increase the structure's crack resistance or shear capacity, and improve the strength, rigidity, crack resistance and elongation of the structure.
2020-01-13 09:03
Why load is removed in the process of strengthening?
In order to make the new and old structure to bear force together, should first remove the original structure load before the reinforcement. It is a better way to reapply it after reinforcement.
2020-01-13 09:05
Can FRP strengthening be interchangeable with steel plate?
Fiber reinfroced polymer(FRP) and steel plate reinforcement are all similar of bonding form and strengthening mechanism. Essentially, they are equivalent to increase the reinforcement of members, and they can replace each other in shear and flexural strengthening.
2020-01-13 09:08What is the difference between structural strengthening adhesive
The structural strengthening adhesive has high strength (compressive strength >65MPa, steel steel tensile bonding strength >30MPa, shear strength >18MPa). It can withstand large loads, and is resistant to aging, fatigue and corrosion. It has stable performance in the expected life and is suitable for bonding with strong structural member.
2020-01-13 09:10
Reinforced beams using unidirectional CFRP fabric
Because of the insufficient bearing capacity of the original concrete beams, carbon fiber reinforced polymer(CFRP) fabric is used in the strengthening method.The lack of reinforcement area * reinforcement tensile strength design value is less than or equal to the carbon fiber cloth thickness * width * design value of tensile strength of carbon fiber cloth
2020-01-13 09:11
Analysis of multi-layer bonded steel plate reinforcement
In the reinforcement of CFRP, there is a multi-layer application. Is it equally applicable to steel plate reinforced?Shanghai Horse Construction will analysis of multi-layer bonded steel plate reinforcement
2020-01-13 09:19
Resin of concrete cracks, how to repair concrete cracks?
80% of the structural cracks are caused by deformation, and about 20% of the cracks are caused by load, and sometimes two kinds of cracks are fused together.Recommended crack repair products: HM-120ML crack repair adhesive, HM carbon fiber fabric, HM pre-stressed CFRP laminate system
2020-01-13 09:22
Repair method of concrete cracks
We must first know the cause of the concrete crack before repair. If the cracks caused by insufficient bearing capacity should be repaired by corresponding methods, then choose appropriate reinforcement methods to retrofitting.
2020-01-13 09:24
Repair cracks by HM-120L crack injection adhesive
How to repair cracks can achieve better results? Shanghai Horse Construction summing up more than ten years of experience, we have to do these 12 points can better handle cracks
2020-01-13 09:26
Must be strengthened after floor opening
After the opening of the concrete floor, the stress conditions of the concrete floor have changed, and the stiffness and bearing capacity of the floor slab should be reduced. How large holes are opened or not to be reinforced depends on the specific conditions and the size of the function load of the floor
2020-01-13 09:29
Existing building structure reinforcement method
Common building structure reinforcement methods,Externally bonded fiber reinfroced polymer(FRP) wrap,Epoxy bonded steel plate,Section enlargement,Steel jacketing,External pre-stressing reinforcement method
2020-01-13 09:31
How to choose good structural reinforcement materials?
How to choose good structural reinforcement materials?There are many kinds of structural strengthening materials, but the most important ones are their appearance, physical and mechanical properties.
2020-01-13 09:33
Planting rebar, anchoring reinforcement
Planting rebar is refers to drilling on concrete, wall rock and other substrates, and then injecting high-strength anchoring adhesive. Then insert steel bar or profile, and glue the steel bar and base material into one.It is a more common structural strengthening technology.
2020-01-13 09:35
How to choose the appropriate structural reinforcement method?
At present, there are a lot of reinforcement methods commonly used in building engineering, such as enlarging section method, steel jacketing, epoxy bonded steel plate, carbon fiber reinforced polymer(CFRP) and so on
2020-01-13 09:36
How to control construction quality for planting rebars?
Rebar planting technology is a new reinforcement technology for reinforced concrete structure. It is a simple and effective connection and anchorage technology for concrete structure. The quality control measures and quality acceptance methods are introduced in this paper.
2020-01-13 09:38
CFRP sheet can improve the bearing capacity
Any method of reinforcement is not omnipotent. Carbon fiber retrofitting is carried out on the basis of the original component. The size of the original structure, the reinforcement and the strength of the concrete limit the extent of the function.
2020-01-13 09:40
Common reinforcement method for building structure
A lot of methods of building structure reinforcement, including improving bearing capacity, increase the stiffness method and crack control method, comparative analysis, design personnel should applicability according to the structural characteristics and strengthening methods of multi program, select the optimal method to achieve reliable technology, reasonable economy, convenient construction.
2020-01-13 09:41
Which structure can’t be removed in house retrofitting?
The housing structure needs to ensure its overall safety and can not be arbitrarily dismantled and altered. It must undergo strict inspection and appraisal, give detailed consideration to the housing structure, and the final transformation should be carried out under the condition of safety.
2020-01-13 09:45
Working process of structural strengthening
The main process of structural strengthening is detection and identification - identification results - reinforcement and retrofitting design - reinforcement and retrofitting construction - engineering acceptance
2020-01-13 09:47