聚丙烯纤维细石混凝土加固冻害混凝土的研究  

Research on Frost-Damaged Concrete Strengthened with Polypropylene Fiber Reinforced Fine Aggregate Concrete

作　　者：赵军[1] 高丹盈[2] 李光辉 

机构地区：[1]郑州大学土木工程学院,河南郑州450002 [2]郑州大学水利与环境学院,河南郑州450002 [3]河南省交通科学技术研究院有限公司,河南郑州450006

出　　处：《建筑材料学报》2009年第5期575-579,共5页Journal of Building Materials

基　　金：河南省杰出青年科学基金资助项目(0612002300);河南省教育厅自然科学研究计划资助项目(2009A560015)

摘　　要：通过冻融循环试验,研究了聚丙烯纤维细石混凝土与冻害混凝土的黏结性能,以及聚丙烯纤维细石混凝土加固冻害混凝土后整体试件的抗冻性能,分析了聚丙烯纤维对细石混凝土和冻害混凝土黏结强度的影响规律,以及聚丙烯纤维加固冻害混凝土后整体试件的抗压强度和劈拉强度随冻融循环次数的变化规律.结果表明,聚丙烯纤维能够提高细石混凝土和冻害混凝土的黏结强度及黏结面的抗冻融能力,并使整体试件的抗压强度和劈拉强度得到较好恢复,抗冻融能力得以提高.Through freeze-thaw cycle test, the bond property and the freeze-thaw resistance of frost-damaged concrete strengthened by polypropylene fiber reinforced fine aggregate concrete were studied. The effect of polypropylene fiber on the bond strength of frost-damaged concrete and fine aggregate concrete was researched. Also, the compressive strength and tensile splitting strength of the integral specimen were studied with the freeze-thaw cycle test. The results indicate that polypropylene fiber can increase the bond strength of frost-damaged concrete and fine aggregate concrete remarkedly. The compressive strength and tensile splitting strength are recovered successfully. Polypropylene fiber in new concrete can improve the freeze-thaw resistance property of the integral specimen.

关 键 词：聚丙烯纤维 冻害 细石混凝土 冻融循环 

分 类 号：TU528.572[建筑科学—建筑技术科学]