硫铝酸盐水泥基快硬混凝土改性试验研究  

Modified experiment study on the rapid hardening concrete of sulfur aluminum cement base

作　　者：吕磊 卫振海 

机构地区：[1]国防大学联合勤务学院联合后勤保障系,北京100089

出　　处：《新型建筑材料》2018年第2期1-4,共4页New Building Materials

基　　金：国家自然科学基金项目(50504014)

摘　　要：通过添加复合掺合料和聚丙烯纤维对硫铝酸盐水泥基快硬混凝土进行改性,研究了复合掺合料、聚丙烯纤维对快硬混凝土力学性能的影响。结果表明:复合掺合料掺量为10%、聚丙烯纤维掺量为0.2%为最优改性方案,试件的4 h抗压、抗折强度较基准混凝土分别提高4.4%和12.2%,28 d抗折强度提高19.2%。The rapid hardening concrete of sulfur aluminum cement base was modified by adding composite admixture andpolypropylene fiber. The influence of composite admixture and polypropylene fiber on mechanical properties of the rapid hardeningconcrete was summarized. The iesults show that the optimal modification scheme is composite admixture of 10% and the polypropy-lene fiber content of 0.2%,the compressive strength and flexural strength at 4 h are 4.4% and 12.2% higher than those of thebenchmark concrete respectively,and 28 d flexural strength increased by 19.2%.

关 键 词：快硬混凝土 聚丙烯纤维 复合掺合料 改性 

分 类 号：TU528.31[建筑科学—建筑技术科学]