Experimental Research on the Freeze-thaw Resistance of Basalt Fiber Reinforced Concrete

Basalt fiber reinforced concrete has excellent basic mechanical properties. It has become a hot topic of engineering studies. Based on the freeze-thaw resistance of durability indices, through the comparative experiment on the dynamic elastic modulus and mass loss of plain concrete and basalt fiber reinforced concrete in the freeze-thaw cycles, this paper had discussed the impact of basalt fiber on the freeze-thaw resistance of concrete, and have considered whether the specimens were mixed with fly ash. The results showed that basalt fibers can improve the freeze-thaw resistance of concrete specimens significantly. After 100 freeze-thaw cycles, the dynamic elastic modulus of basalt fiber reinforced concrete specimens was 1.47 times as much as that of plain concrete specimens, and mass loss of basalt fiber reinforced concrete specimens was 0.64 times as much as that of plain concrete specimens. Fly ash had an influence on the freeze-thaw resistance of basalt fiber reinforced concrete. In engineering applications, the mixing amount of fly ash should be taken into consideration. This research had a certain reference value on the engineering applications of basalt fiber reinforced concrete.