聚乙烯/聚丙烯纤维混凝土耐高温性能测试研究  

Test study on high temperature resistance of concretewith hybrid polyethylene polypropylene fiber materials

作　　者：冀光 张杏芝 赵奕安 JI Guang;ZHANG Xingzhi;ZHAO Yian(Zhongfa Engineering Design Co.,Ltd.,Beijing 100032,China;Beijing Xinzhiheng Technology Co.,Ltd.,Beijing 100080,China;Tsinghua University,Beijing 100084,China)

机构地区：[1]中发工程设计有限公司,北京100032 [2]北京欣智恒科技股份有限公司,北京100080 [3]清华大学,北京100084

出　　处：《粘接》2023年第9期1-3,共3页Adhesion

摘　　要：以混凝土的质量和抗压强度为评价指标,研究聚乙烯纤维掺量、聚丙烯纤维掺量和该2种纤维的混合掺入对混凝土的抗高温影响。结果表明:随着环境温度的增加,单掺纤维混凝土和双掺纤维混凝土的质量和抗压强度均会出现大幅度的下降,并且呈非线性下降趋势。在聚乙烯纤维、聚丙烯纤维掺量比例相同的情况下,聚丙烯纤维对混凝土抗高温性能的提升要优于聚乙烯纤维。最佳混掺比例为0.5%的聚乙烯纤维+1.5%的聚丙烯纤维。Using the quality and compressive strength of concrete as evaluation indicators,the effects of polyethylene fiber content,polypropylene fiber content,and the mixture of the two fibers on the high temperature resistance of concrete were studied.Through experiments,it is found that with the increase of environmental temperature,the quality and compressive strength of single fiber reinforced concrete and double fiber reinforced concrete both show a significant decrease and a non-linear downward trend.When the proportion of polypropylene fiber is the same,the improvement of concrete s high-temperature resistance performance is better than that of polyethylene fiber.The optimal mixing ratio is 0.5%polyethylene fiber+1.5%polypropylene fiber.

关 键 词：聚乙烯纤维 聚丙烯纤维 混凝土 质量 抗压强度 耐高温性能 

分 类 号：TQ177.68[化学工程—硅酸盐工业]