硅灰对剑麻纤维珊瑚混凝土的影响

EFFECT OF SILICA FUME ON SISAL FIBER REINFORCED CORAL CONCRETE

为研究硅灰对剑麻纤维增强珊瑚混凝土耐久性的影响,通过人工加速老化试验方法测定试块的立方体抗压强度值与劈裂抗拉强度值,探索硅灰抑制剑麻纤维在砂浆中老化的机理,为剑麻纤维增强珊瑚混凝土其它性能及应用提供参考。试验结果表明：试件的立方体抗压强度在试验前后没有发生明显变化;未掺入硅灰的试件的劈裂抗拉强度在试验后有所下降,降幅为13.88%;硅灰掺量为10%的试件的劈裂抗拉强度在试验后降幅为6.46%;当硅灰掺量为20%～30%时,试件的劈裂抗拉强度在试验前后变化不大。

To study the influence of silica fume on the durability of sisal fiber reinforced coral concrete, the experiment is researched on the cube compressive strength and splitting tensile strength of sisal fiber reinforced coral concrete by artificial accelerated aging test method, to explore aging mechanism of the silica fume inhibition of sisal fiber and provide a reference for further study of other properties and applications of sisal fiber reinforced coral concrete. The results showed that： the compressive strength of specimens was not changed obviously before and after the test; the splitting tensile strength of the specimen without silica fume was decreased after the test, dropped by 13.88% , when the content of silica fume was 10% , the splitting tensile strength of the specimen has a decrease of 6.46% ; when the content of silica fume was 20% - 30% , the tensile strength of the specimens was not changed much before and after the test.