Study on the effect of basalt fiber on the energy absorption characteristics of porous material

Ceramics-cement based porous material (CCPM) and basalt fiber reinforced ceramics-cement based porous material (BFRCCPM) have been prepared. The quasi-static compression test and impact compression test of both CCPM and BFRCCPM have been made and the energy-absorption indicators under different strain rate have been obtained. The energy-absorbing features of them have been comparatively analyzed and the effect of basalt fiber has been comparatively studied. The results show: under quasi-static compression state, the peak toughness and full toughness increase continuously with strain rate. Under the same strain rate, the peak toughness of BFRCCPM are obviously higher than that of CCPM. It is because basalt fiber can increase the peak toughness and full toughness. During impact compression stage, the peak toughness and specific energy absorption are highly strain rate sensitive and increase continuously with it. Basalt fiber has obvious improving effect on both peak toughness and full toughness. During impact compression state, the more energy the specimen absorbs, the more seriously it is damaged. BFRCCPM is comparatively slightly damaged given the same amount of absorbed energy. It is because the important effect of the basalt fiber. So, it can be concluded that basalt fiber can improve the energy-absorbing ability of porous material and has a promising future in the feature improving field.