摘要
研究了可再分散丙烯酸酯-苯乙烯共聚物乳胶粉(PRAS)和聚乙烯纤维(PE纤维)对喷射混凝土力学性能和抗冻性能的影响。结果表明:复掺适量PRAS和PE纤维能够显著提高喷射混凝土的抗压强度和抗折强度,降低冻融循环后的质量损失率和提高相对动弹性模量;当PRAS掺量为0.4%、PE纤维体积掺量为1.0%时,喷射混凝土的力学性能和抗冻性能最佳。
The effects of redispersible acrylate styrene copolymer latex powder(PRAS)and polyethylene fiber(PE fiber)on the mechanical properties and frost resistance of shotcrete were studied.The results show that adding appropriate content of PRAS and PE fiber can significantly improve the compressive strength and flexural strength of shotcrete,reduce the mass loss rate after freeze-thaw cycles,and increase the relative dynamic elastic modulus.When the PRAS content is 0.4%and the PE fiber volume content is 1.0%,the mechanical properties and frost resistance of shotcrete are the best.
作者
张金林
尹谷雨
倪常彪
刘一凡
石廷阅
牛笑飞
肖凤娟
ZHANG Jinlin;YIN Guyu;NI Changbiao;LIU Yifan;SHI Tingyue;NIU Xiaofei;XIAO Fengjuan(China Communications Construction Comprehensive Planning and Design Institute Co.,Ltd.,Beijing 100024,China;Hebei Provincial Key Laboratory of New Materials for the Coordinated Development of Transportation Engineering and Environment,School of Materials Science and Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)
出处
《混凝土与水泥制品》
2023年第7期57-60,共4页
China Concrete and Cement Products
基金
河北省重点研发计划项目(22371201D)。
关键词
可再分散乳胶粉
聚乙烯纤维
喷射混凝土
力学性能
抗冻性能
Latex and redispersible polymer powder
Polyethylene fiber
Shotcrete
Mechanical property
Frost resistance
