生态型活性粉末混凝土性能试验研究

Experimental Study on Performance of Ecological Reactive Powder Concrete

研究了剑麻纤维活性粉末混凝土的流动度和力学性能,并在试验的基础上,就剑麻纤维对活性粉末混凝土延性和脆性的改善效果进行了量化计算。结果表明,随着剑麻纤维掺量从0增加到1.6%,活性粉末混凝土的流动度、抗压强度和抗折强度分别降低了36%、9%和13%;剑麻纤维的掺入使得混凝土的跨中位移和开口位移极限值分别增加了47%和42%,断裂能和延性指数分别提高了19%和35%。

The fluidity and mechanical properties of reactive powder concrete(RPC)with sisal fiber were studied,and on the base of experimental analysis,the improvement effect of sisal fiber on the ductility and brittleness of RPC was calculated.The results show that with the increase of sisal fiber dosage from 0 to 1.6%,the fluidity,compressive strength and flexural strength of RPC decrease by 36%、9%and 13%respectively.The addition of sisal fiber results in the increase of limit values of mid-span displacement and opening displacement of RPC by 47%and 42%respectively,and the fracture energy and ductility index increase by 19%and 35%respectively.