低温养护下钢纤维—聚丙烯腈纤维混凝土力学性能试验研究

Performance Test of Steel Fiber-Polyacrylonitrile Fiber Reinforced Concrete Mechanics under Low Temperature Maintenance

为了研究不同类型混凝土在低温下的力学性能,采用对比试验的方法,研究低温环境下素混凝土、聚丙烯腈纤维混凝土、钢纤维混凝土和钢纤维—聚丙烯腈纤维混凝土的抗压、抗弯以及断裂能量等力学性能,结果表明,钢纤维—聚丙烯腈纤维混凝土的各项力学性能相对比较优越,并在此基础上分析了钢纤维与聚丙烯腈纤维的抗裂和抗冻机理。

In order to study different types of concrete in low mechanical properties,the contrast experiment method has been used,the low temperature environment conerete,polyacrylonitrile fiber reinforced concrete,steel fiber reinforced concrete and steel fiber concrete——polyacrylonitrile fibers,bending and compressive mechanical properties such as fracture energy,the results show that the steel fiber concrete——polyacrylonitrile fibers of various mechanical properties is relatively superior,and the crack and anti-freeze mechanism of steel fiber and polyacrylonitrile fiber has been analyzed.