童俊豪,马芹永
喷射补偿收缩钢纤维混凝土带模与标准养护抗压强度对比 分析
童俊豪,马芹永
摘 要:通过正交试验对喷射素混凝土、喷射补偿收缩混凝土、喷射钢纤维混凝土、喷射补偿收缩钢纤维混凝土带模养护与标准养护的抗压强度进行了极差和对比分析。试验结果表明,钢纤维体积率与膨胀剂掺量的推荐组合,在标准养护条件下为0.8%和6%,在带模养护条件下为1.6%和6%;在膨胀剂掺量为10%,钢纤维体积率为1.6%时,抗压强度提高比率最大,为17.9%。
Abstract: The range and comparative analysis on compressive strength of shotcrete, shrinkage-compensating shotcrete, steel fiber shotcrete, shrinkage-compensating steel fiber shotcrete are carried out by orthogonal experiment under molding maintenance or standard maintenance. The experimental results show that the recommendations for steel fiber volume rate and expansive agent under the standard maintenance condition are 0.8% and 6%, and under the molding maintenance condition are 1.6% and 6%. The largest improving ratio of compressive strength is 17.9% when the expansive agent dosage is 10% and steel fiber volume rate is 1.6%.
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