Abstract
In order to study the effect of basalt fiber content, basalt fiber length and coal gangue activation on compressive strength and splitting tensile strength of concrete, 24 groups of orthogonal experiments were designed. The results show that the influence of various factors on the compressive strength and splitting tensile strength of concrete is coal gangue activation > basalt fiber content > basalt fiber length. The activation of coal gangue is conducive to the increase of concrete strength; the influence of fiber content on strength increases first and then decreases; the increase of fiber length is beneficial to compressive strength and unfavorable to splitting tensile strength; the best ratio of engineering practice is fiber content 0.10 %, fiber length 18 mm, activated coal gangue.
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