橡胶颗粒掺量及粗细对水泥混凝土路面抗渗及抗冻影响  

Effects of Rubber Particle Content and Fineness on Impermeability and Salt Frost Resistance of Cement Concrete Pavement

作　　者：周梅[1] 赵华民[1] 徐秒[1] 王然[1] 腾飞[1] 

机构地区：[1]辽宁工程技术大学建筑工程学院,辽宁阜新123000

出　　处：《公路交通科技》2015年第4期34-39,共6页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金委员会与神华集团有限公司联合项目(U1261122);辽宁省教育厅科学研究项目(L2012123)

摘　　要：以橡胶颗粒取代细集料砂子的取代率及细度模数为变量,采用二因素、四水平的正交试验,研究橡胶颗粒掺量和粗细程度对水泥混凝土路面抗渗及抗冻的影响。结果表明:橡胶颗粒的掺入有效提高了混凝土的抗氯离子渗透和抗盐冻性能。橡胶颗粒的取代率和细度模数对混凝土抗氯离子渗透性影响显著,橡胶颗粒的取代率对混凝土抗盐冻性影响特别显著,细度模数对混凝土抗盐性影响显著。当混凝土中掺入细度模数为1.38的特细橡胶粉,且掺量为细集料的40%(体积比)时,混凝土抗氯离子渗透电通量为527 C,抗盐冻等级为F500。Taking the substitution rate and fineness modulus of rubber particle as replacement of fine aggregate sand, the effects of rubber particle content and fineness on impermeability and frost resistance of cement concrete pavement are studied by two-factor four-level orthogonal test. The result shows that （ 1 ） the addition of rubber particles effectively improves the resistance to chloride ion permeability and salt frost resistance of concrete; （2） the replace rate and fineness modulus of rubber particles have a significant influence on the resistance to chloride ion permeability of concrete, the replace rate of rubber particles has a particularly pronounced influence and fineness modulus has a significant influence on salt frost resistance of concrete; （3） when adding the fine rubber particles whose fineness modulus is 1.38 and the 40% dosage of fine aggregate （volume ratio ） into concrete, the electric flux for concrete to chloride ion penetration resistance is 527 C, and the salt resistant level is F500.

关 键 词：道路工程 橡胶集料混凝土 正交设计 氯离子 抗盐冻 

分 类 号：U416.216[交通运输工程—道路与铁道工程]