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玄武岩纤维是一种新型环保型纤维,凭借其优异的力学性能和较低的生产成本,被应用到混凝土工程中。为对比分析玄武岩纤维对不同类型混凝土的改性效果,制备了混凝土强度等级为C30和C50的纤维体积掺量分别为0、0.1%、0.2%、0.3%的玄武岩纤维增强普通混凝土和玄武岩纤维增强地质聚合物混凝土,测试了标准养护28d后的准静态抗压强度,并进行了微观层面的理论分析。研究表明:当混凝土强度等级为C30时,玄武岩纤维对普通混凝土和地质聚合物混凝土均有增强效果,最大增幅分别达到18.6%和31.5%,而当混凝土强度等级为C50时,玄武岩纤维的掺入却降低了普通混凝土和地质聚合物混凝土的抗压强度;地质聚合物混凝土独特的微观结构构筑环境较之普通混凝土更利于玄武岩纤维发挥其潜在性能。由此可见,玄武岩纤维在地质聚合物混凝土中的应用更有发展潜力。
Basalt fiber is a new type of environmentally friendly fiber, with its excellent mechanical properties and lower production costs, is applied to concrete engineering. In order to compare the modification effects of basalt fiber on different types of concrete, basalt fiber reinforced normal concrete and basalt fiber reinforced concrete with fiber strength of C30 and C50 of 0, 0.1%, 0.2% and 0.3% Geocomposite concrete was tested for quasi-static compressive strength after 28 days of standard curing and the theoretical analysis was carried out at the microscopic level. The results show that when the concrete strength is C30, the basalt fiber has the enhancement effect on ordinary concrete and geopolymer concrete with the maximum increase of 18.6% and 31.5% respectively. When the concrete strength is C50, basalt fiber incorporation But the compressive strength of ordinary concrete and geopolymer concrete is reduced. The unique microstructure of geopolymer concrete is more conducive to basalt fiber than traditional concrete to exert its potential performance. Thus, the application of basalt fiber in geopolymer concrete has more potential for development.