爆炸与冲击2009，Vol.29Issue(4)：361-366,6.
粗集料对超高性能水泥基材料动态力学性能的影响
Influences of coarse aggregate on dynamic mechanical behaviors of ultrahigh-performance cementitious composites
摘要
Abstract
Ultrahigh-performance cementitious composites (UHPCC) with 200 MPa compressive strength were prepared by substitution of ultrafine industrial waste powder for large quantity of cement by weight and replacement of ground fine quartz sand with natural fine sand whose maximum particle diameter was 2. 5 mm. And in the prepared composites, basalt stones with high elastic modules and high strength were added, whose maximum particle diameter was 10 mm. High-speed impact compressive experiments were performed on the ultrahigh-performance steel-fiber-reinforced cementitious composites (UHPSFRCC) with different fiber volume fractions by the split Hopkinson pressure bar technique. Strain rate, fiber volume fraction and coarse aggregate can influence the impact resistance of the UHPSFRCC. The impact resistance of the UHPSFRCC is improved with the increase of fiber volume fraction and the dynamic strength of the UHPSFRCC is advanced with the increase of strain rate. The dynamic performances of the UHPSFRCC are improved with the adding of coarse aggregates of basalt stones.关键词
固体力学/动态性能/霍普金森压杆/超高性能水泥基复合材料/粗集料/应变率Key words
solid mechanics/ dynamic performance/ split Hopkinson pressure bar/ ultra-high performance cementitious composites/ coarse aggregates/ strain rate分类
数理科学引用本文复制引用
戎志丹,孙伟..粗集料对超高性能水泥基材料动态力学性能的影响[J].爆炸与冲击,2009,29(4):361-366,6.基金项目
东南大学优秀博士论文基金 （）
