Experimental Research On The Influence Of Different Weaving Mode To Bending Property Of Self-stressing Concrete Plates Reinforced By Carbon Fiber Textile

The bending capacity of carbon fiber textile reinforced concrete(CTRC)plate was related to weaving method. In this paper, plain weaving and knot weaving were used to weave carbon fiber textile with different grid spacings (80mm and100mm), then used them to decorate two kinds of ordinary concrete and self-stressing concrete to make carbon fiber textile reinforced concrete plates. The bending tests of plates were carried out to investigate the effect of weaving methods and grid spacings on bending property of CTRC plates with different concrete substrates.The results showed that, in the concrete arrangement of plain weaving weave carbon fiber textiles could significantly improve the bending carrying capacity of the concrete plates, the deformation performance also had been improved obviously. Plain weaving and knot weaving were used to make carbon fiber textile reinforced ordinary concrete with different grid spacings(80mm and100mm), compared to ordinary concrete plates, the ultimate load of those concrete plates increased by67%,56%,51%and56%respectively.Knot weaving carbon fiber textiles could maintain the bending carrying capacity of concrete plates reinforced effect. When the load exceeded the bending ultimate carrying capacity of plate, CTRC plates would not be completely destroyed, when the concrete plates completely destroyed, its deflection would be further increased than plain weaving carbon fiber textile reinforced concrete plants. When the grid spacing was80mm, the damage deflection of knot weaving carbon fiber textile reinforced ordinary concrete plates was increased by13.6%compared to plain weaving. When the grid spacing was100mm, the damage deflection of knot weaving carbon fiber textile reinforced self-stressing concrete plates was increased by12.1%compared to plain weaving.Self-stressing concrete production of carbon fiber textile reinforced self-stressing concrete plate could improve the cracking load and the deformation performance of concrete plates. Compared to ordinary plain concrete plates, the cracking load of self-stressing plain concrete plates increased by12.2%, and the ultimate deflection increased by39.7%. The cracking load of plain weaving carbon fiber textiles reinforced self-stressing concrete plates with80mm grid spacing was increased by 23.3%than ordinary concrete plates.Grid spacing had important influence on the bending carrying capacity of CTRC plates. When the amount of carbon fiber is the same, the bending strength of grid spacing80mm specimens was higher than the grid spacing100mm specimens. Compared to the specimens with100mm grid spacing, the bending carrying capacity of plain weaving carbon fiber textile reinforced self-stressing concrete plate with80mm grid spacing was increased by7.1%, the bending carrying capacity of knot weaving carbon fiber textile reinforced self-stressing concrete plate with80mm grid spacing was increased by11.8%.The complete damage process of knot weaving carbon fiber textile reinforced concrete plates could be divided into five stages:the stage with no crack, the tension-slip stage, the working with cracks stage, the bond-slip stage and the destruction stage. But damage process of plain weaving carbon fiber textile reinforced concrete plates had those stages except bond-slip stage.