Experimental study on dynamic splitting tensile properties of basalt fiber reinforced coral aggregate concrete
To study the dynamic splitting tensile properties of basalt fiber reinforced coral aggregate concrete(BFCAC),the influence mechanism of basalt fibers on the dynamic splitting tensile properties was analyzed through the dynamic splitting tensile experiment of 100 BFCAC specimens in 20 sets,and the statistical probability model for the dynamic splitting tensile strength was established.The results show that as the strain rate increases,the dynamic splitting tensile strength and dynamic dissipated energy gradually increase.When the content of basalt fibers is 0,0.1％,0.2％,and 0.3％,respectively,as the strain rate increases,the range of dynamic increase factors is 1.51-2.99,1.74-3.26,2.07-3.45,and 2.31-3.67,respectively,and the range of the increase proportion of dynamic dissipated energy is 62.13％-139.39％,73.88％-150.99％,66.15％-162.14％,and 90.01％-168.11％,respectively,indicating that basalt fibers improve the strain rate effect of dynamic splitting tensile properties of BFCAC.Basalt fibers reduce the degree of dynamic splitting tensile failure of BFCAC,and their slip impedance increases with the increase of strain rate,improving the impact resistance of BFCAC.The established statistical probability model for dynamic splitting tensile strength can effectively characterize the statistical distribution law of dynamic splitting tensile strength of BFCAC.
coral aggregate concretebasalt fiberdynamic splitting tensile strengthstrain rate effectstatistical probability model
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