Experimental Study on Anti-splitting Tensile Properties of the Chopped Basalt Fiber Reinforced Concrete

摘要

In order to study the basic mechanical properties of chopped basalt fiber reinforced concrete (BFRC) and the impact of basalt fiber reinforced concrete by fiber content Experiments are conducted to examine the splitting tensile strength of this new composite construction material at different fiber volume fractions. The results showed that: The addition of fiber to concrete is at six different levels of volume fractions, namely 0.05%, 0.1%, 0.15%, 0.2%, 0.25% and 0.3%, can decrease the slump of concrete and increase the splitting tensile strength in varying degree. Moreover, the degree of improvement is positively correlated with volume fraction of CBF. When direct mixing method and pretreatment method are compared while holding other conditions constant, it is found that BFRC produced by pretreatment method demonstrates better strengthening and toughening effects than direct mixing method. Conclusion: with the research findings presented above, this paper concludes that BFRC has favorable mechanical properties, however, fiber volume fraction as well as production method will affect its performance on splitting tensile strength in different extent.