Factors affecting effect of CFRP strengthening

There are many parameters that affect CFRP strengthening, which can be divided into two categories:reinforcement, the properties of CFRP composite system.

2018-04-19 15:44:26

Why should concrete compression members be strengthened?

Reinforcement method of concrete column: Enlarging section method, steel jacketing method, pre-stress CFRP method, unloading external loading method and increasing support method.

2018-04-19 15:44:40

Strengthening of concrete structures and when its required?

Structural reinforcement refers to strengthening the original stressed structure, so as to meet the new requirements and safety, and save costs and reduce investment.

2018-04-17 17:37:17

Need to know about post installed rebar

Post installed rebar reinforcement has been applied more and more widely in structural reinforcement projects. Although post installed rebar is simple and easy to operate, strict quality control is still needed.

2018-04-17 17:13:02

CFRP strengthening systems for reinforced concrete column beam s

Beam strengthening,Solve the problem: the flexure and tension of concrete beams caused by increasing load. According to the force, the bottom of the beam can be strengthened by sticking single layer or double layer with U type hoop.

2018-04-13 17:58:11

A solution of steel jacketing

The reason of void between steel plate and concrete ,Inappropriate grinding and cleaning of the surface of the steel plate,The surface of concrete is wet or the humidity in the air is high

2018-04-12 17:14:28

Post installed rebars advantages

Design flexibility: according to need, we can design the quantity and specification of planting bar according to the structural stress characteristics in any position of reinforced concrete.

2018-04-10 18:12:08

What is the mechanical changes before and after strengthen?

What changes have taken place in the mechanical properties of the structure before and after the structure is reinforced or retrofitting?

2018-03-26 15:36:46

Three stages of beam strengthening used CFRP fabric

The whole process can be divided into three stages: the stage of no cracking, the stage of crack and the stage of failure.

2018-03-23 16:11:17

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.

2018-03-23 16:11:31

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.

2018-03-21 13:44:51

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.

2018-03-20 16:02:31

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.

2018-03-20 14:44:49

What 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.

2018-03-20 14:20:14

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

2018-03-09 15:07:05

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

2018-03-08 14:48:34

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

2018-03-07 14:54:09

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.

2018-03-07 14:25:49

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

2018-03-06 15:34:25

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

2018-03-02 14:47:27