Abstract:
The tensile properties of the textile reinforced concrete fiber/concrete were investigated by the tensile test under different environments. The effects of the number of textile layers, the type of the textile, the concentration of the chloride salt and the number of cycles on the fiber/concrete were investigated under the chloride salt dry-wet cycle, freezing-thawing cycle and the conventional environment. The results show that the tensile properties of fiber/concrete can be improved by increasing the number of textile layers in the three kinds of environmental types, and the reinforcing effect of carbon fiber is more obvious than basalt fiber. The concentration of chloride and the number of dry-wet cycle or freezing-thawing cycle have no significant effect on fiber/concrete's tensile ultimate load. The tensile ultimate load of fiber/concrete can be increased by adding short-cut PVA (poly(vinyl alcohol)) fiber and AR(alkali-resistant)-glass fiber under the conventional environment and chlorine salt dry-wet cycle. Under the chloride salt freezing-thawing cycle, the tensile ultimate load of the fiber/concrete is not increased by the addition of PVA short-cut fiber, but increased by the addition of AR-glass short-cut fiber.