Study of the Mechanical Properties of Basalt Fiber Reinforced Concrete

Based on plentiful tests,the compressive strength and the splitting tensile strength of concrete reinforced with various volume fractions of basalt fiber were studied.The tests reveal that basalt fiber in proper quantities can significantly improve the compressive strength of concrete.Along with the increase of fiber contents in the mixed quantity within range of 0～5 kg/m3,the compressive strength of basalt fiber reinforced concrete increases gradually,especially 28-day concrete test,where the influence of compressive strength is the most significant.The splitting strength is rising.When mixing content is 4 kg/m3,the compressive strength increased by 46.3%.At this time the mixed contents of basalt fiber is optimum.Along with the contents continue to increase,the compressive strength declined.At the same time,adding basalt fiber can improved the early strength of concrete.Based on the test results of the comprehensive consideration of the actual application value,and puts forward the value for the optimal ratio of 4 kg/m3.