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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。
In order to study the effect of silica fume on the durability of sisal fiber reinforced coral concrete, the cube compressive strength value and splitting tensile strength value of the test piece were determined by artificial accelerated aging test to explore the effect of silica fume on inhibiting the aging of sisal fiber in mortar The mechanism of sisal fiber reinforced concrete and other properties of coral provide a reference. The experimental results show that the cube compressive strength of the specimen has not changed obviously before and after the test. The splitting tensile strength of the specimen without silica fume decreased after the test, decreasing by 13.88% The splitting tensile strength of 10% of the specimens decreased 6.46% after the test. When the content of silica fume was 20% ~ 30%, the splitting tensile strength of the specimens did not change much before and after the test.