| Carbon textile is made of fiber roving through knitting technology in two dimensions, impregnated by epoxy resin and pasted by sand. Contrary to steel, most textiles steel, most textiles do not corrode in carbonated or chloride containing concrete which permits reducing the concrete cover just large enough to transfer bond stresses from the reinforcement to the concrete. So this allows production of thin reinforced concrete elements. As a kind of continuous fiber reinforcing material, textiles make a high effectiveness of the reinforcement for concrete instead of short-cut fibers distributed randomly in concrete because roving can be oriented in line with the occurring stresses. Carbon fibers are antimagnetic, and the building, which is constructed by use of carbon textile reinforced concrete, can protect instruments in it against magnetism.This paper focuses on research on mechanical properties of carbon fiber textile reinforced common concrete, including theoretical analysis of bond performance between concrete matrix and carbon fiber textile and mechanical properties test research on carbon fiber textile reinforced common concrete beam(size 150 mm×150 mm×550 mm). The main goal is that common concrete strength is improved, and concrete is limited to crack by use of carbon fiber textile.Because this paper emphasize on flexural property of carbon fiber textile reinforced common concrete, two kinds of spacing grid of carbon fiber textile are designed as 100mm and 50mm, and two sets of wooden moulds, which were used in the flexural test, were designed and made. Each set includes three wooden moulds. In the flexural test of concrete beam specimens including different amount of carbon fiber, it may be found that: with the addition of amount, ultimate flexural capacity of beam is gradually improved. Contrary to plain concrete beam, Ultimate strength of specimens (spacing grid 100mm) is improved by 7.7%, 18.6%, and 30.3%, respectively. However, ultimate strength of specimens (spacing grid 50mm) is improved by 22.6%, 31.9%, and 36.2%, respectively. And it is also can be found that under the condition of the same amount, contrary to specimens (spacing grid 100mm), ultimate strength of specimens(carbon textile spacing grid 100mm) is larger 14.9%, 13.3%, and 5.9%, respectively. So spacing grid and amount of carbon fiber textile greatly affect strength of carbon fiber textile reinforced common concrete. However, contrary to failure form and failure process of steel fiber reinforced concrete specimens, brittle failure appears at carbon fiber textile reinforced common concrete specimens. |
