阴离子乳化沥青粒径大小及分布影响因素分析  

Particle Size and Distribution Influencing Factors ofAnionic Emulsified Asphalt

作　　者：何丽红 温仙仙[1,2] 侯艺桐 邓稳 HE Lihong;WEN Xianxian;HOU Yitong;DENG Wen(College of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China;National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学材料科学与工程学院,重庆400074 [2]重庆交通大学交通土建材料国家地方联合工程实验室,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2021年第6期99-104,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：重庆市科委项目(cstc2019jcyj-msxmX0763);重庆市教委科研项目(KJ1705145);交通部科技项目(2014318346140);材料工程重庆市研究生联合培养基地基金项目(201901)。

摘　　要：以60%固含量的阴离子乳化沥青为研究对象,采用激光粒度仪和光学显微镜考察其粒径大小及分布的变化情况,探讨复配乳化剂用量及比例、皂液p H值、剪切时间、贮存时间对其粒径大小及分布的影响规律,进而分析和总结提高乳化沥青稳定性机理。结果表明:复配乳化剂SDS/OP-10(十二烷基硫酸钠/烷基酚聚氧乙烯醚)质量比为1∶1时,阴离子乳化沥青平均粒径为1.849μm,且粒径均匀分布在0.7~3μm;其平均粒径随着皂液p H值、剪切时间的增大而减小,贮存时间延长其平均粒径稍有增大。The particle size and distribution of anionic emulsified asphalt with 60%solid content were investigated by laser particle size analyzer and optical microscope.The influence law of dosage and proportion of compound emulsifier,pH value of soap solution,shear time and storage time on particle size and distribution was investigated,and then the mechanism of improving the stability of emulsified asphalt was analyzed and summarized.The results show that when the mass ratio of SDS/OP-10(sodium dodecyl sulfate/alkylphenol ethoxylates)is 1∶1,the average particle size of anionic emulsified asphalt is 1.849μm,which is evenly distributed in the range of 0.7μm to 3μm.The average particle size decreases with the increase of pH value of soap solution and shearing time,but increases slightly with the prolongation of storage time.

关 键 词：道路工程 乳化剂分子 沥青微粒 平均粒径 粒径分布 

分 类 号：U414[交通运输工程—道路与铁道工程]