Non metal fiber woven net flock combined reinforced concrete base composite material

Abstract

The cement-base composite material uses nonmetal fibrage web and short fibre for joint reinforcement. Wherein, the said fibrage web should use carbon fiber, aramid fiber, alkali resistant glass fibre, polyethelene alcohol fibre, or polyvinyl fibre, or their mixture to weave; similarly, the short fiber shoud use one or more said fibers except the alkali resistant glass fibre. This invention solves the cracking problem in concrete structure under water, maintenance and solidification problem for reinforced concrete structure on corrosion environment, and magnetization-proof problem for medical instrument. The product has super tenacity and carrying capacity to disperse concrete crack, and fit to manufacture permanent mould plate and other structures to release self-weight and total cost.

Description

Technical field [0001] The invention belongs to the technical fields of civil engineering, water conservancy engineering, hydropower engineering, highway engineering and railway engineering, and relates to a fiber-reinforced cement-based composite material. It uses a non-metal fiber woven net and short fibers to strengthen the cement-based matrix and correspondingly harden The latter composite material has ultra-high toughness and high load-bearing capacity, which can harmlessly disperse concrete cracks. Background technique [0002] Traditional reinforced concrete structures will corrode the steel bars due to the intrusion of chloride ions or carbon dioxide and other corrosive media, and the protective layer will peel off, thereby reducing the bearing capacity of the structure and even causing damage to the entire structure. The maintenance cost of this type of concrete structure is high. This cost can even reach several times its cost. According to statistics, the corrosion los...

AI Technical Summary

Problems solved by technology

At the same time, in recent years, some scholars in our country have tried to use textile fiber woven mesh to improve concrete. Due to the obvious defects in the performance and reinforcement technology of the fiber woven mesh used, it is far from meeting the requirements of practical engineering applications.

The main performance is that the tensile strength of the textile fiber braided mesh used is insufficient; the bearing capacity of the reinforced concrete composite material cracked by it is too large, and the matrix at the crack no longer transmits the load, and the fiber braided mesh near the crack and The matrix interface is prone to debonding due to stress concentration, which is not conducive to exerting the ultimate bearing capacity of the braided mesh. Under the load, although the corresponding component may have many cracks, the crack spacing is relatively large