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When we open the holes in the floor slab, should we reinforce with bonded steel or carbon fiber cloth?

Apr. 16, 2019


The customers who often open the holes in the floor slab must know that in order to ensure safety, the holes opening must be reinforced. In general, the floor slab reinforcement includes two aspects: reinforcement during opening the holes and reinforcement after opening the holes. In fact, Good reinforcement method is also an important guarantee for opening the hole. So how do we choose the right reinforcement method? What kind of reinforcement material is better? Here  we introduce you to two common measures and reinforcement materials:

 

First, bonded steel plate reinforcement method for opening the hole in the floor slab

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Reinforcement effects with bonded steel plate after opening the slab hole

 

Bonded steel reinforcement, also known as bonded steel plate reinforcement, is to bond the steel plate with high-performance epoxy adhesive to the surface of the concrete member, so that the steel plate and the concrete form a unified whole, and use the good tensile strength of the steel plate to achieve the purpose of enhancing the bearing capacity and rigidity of the member. However, the reinforced steel method is only suitable for general bending and tension members subjected to static action. The ambient temperature is not more than 5~60 °C, and the relative humidity is not more than 70%, and the conditions for non-chemical corrosion are limited. Otherwise, we should take effective protection measures, and when the strength level of the component is lower than Cl5, it is not suitable to be reinforced by this method.

 

Second, the carbon fiber cloth reinforcement for opening the slab holes

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Carbon fiber cloth reinforcement effect for opening the slab holes

 

The principle of carbon fiber cloth reinforcement is to adhere to the surface of the concrete member by using high-performance carbon fiber supporting resin impregnating glue, and the good tensile strength of the carbon fiber material is used to enhance the bearing capacity and strength of the member. As a reinforcing material, carbon fiber cloth has the advantages of space saving and simple construction compared with the traditional reinforcement of increasing concrete section or bonded steel concrete. It does not require on-site fixed facilities, and the construction quality is easy to guarantee. It basically does not increase the structural size and weight, and is resistant to corrosion.  Its durability is good as well. In addition, the use of this method can greatly improve the service life of the building and reduce the cost of reinforcement. It is a recommended reinforcement method.

 

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Mankate carbon fiber cloth was broadcasted by CCTV brand.

 

Reinforcement of opening the holes in floor slabs plays an important role in the stability of the structure. Choosing the right reinforcement method is only a good start. We also need to select qualified high-quality reinforcing materials and regular construction teams to achieve the desired results. Nanjing Mankate, 16 years of focus on the reinforcement materials industry, high-quality products and services, to give you security, give us a brilliant result!

 

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(Editor: Nanjing Mankate, if you need to reprint, please indicate the source)