矿井工程高性能钢纤维混凝土的制备与性能研究

采用P·O 52.5R水泥、高性能掺合料、钢纤维等原材料和0.22、0.24两个水胶比制备了CF80、CF90高性能钢纤维混凝土,对其工作性、强度和断裂性能进行了试验研究。试验结果表明,制备的高性能钢纤维混凝土具有工作性好、强度高、断裂性能优良等特点,可以满足矿井工程的使用要求;掺入钢纤维会降低混凝土的工作性,提高混凝土的强度和断裂韧性,大幅提高断裂能。

Research on Prepara tion and Performance of High Performance Steel Fiber Reinforced Concrete for Mine Engineering

CF80 and CF90 high-performance steel fiber reinforced concrete were prepared by using P·O 52.5R cement,high-performance admixture,steel fiber and other raw materials and water-binder ratios of 0.22 and 0.24.The workability,strength and fracture properties were tested experimentally.The test results show that the high-performance steel fiber concrete has the characteristics of good work performance,high strength and excellent fracture performance,which can meet the requirements of mine engineering;the incorporation of steel fiber can reduce the workability of concrete,improve the strength and fracture property of concrete.