Particle Size and Distribution Influencing Factors of
Anionic Emulsified Asphalt

doi:10.3969/j.issn.1674-0696.2021.06.15

Journal of Chongqing Jiaotong University(Natural Science) ›› 2021, Vol. 40 ›› Issue (06): 99-104.DOI: 10.3969/j.issn.1674-0696.2021.06.15

• Transportation Infrastructure Engineering • Previous Articles Next Articles

Particle Size and Distribution Influencing Factors of Anionic Emulsified Asphalt

HE Lihong1,2, WEN Xianxian1,2, HOU Yitong 1,2, DENG Wen 1,2

(1.College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 2. National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing 400074, China)

Received:2019-10-17 Revised:2020-01-20 Online:2021-06-19 Published:2021-06-24

阴离子乳化沥青粒径大小及分布影响因素分析

何丽红1,2,温仙仙1,2,侯艺桐1,2,邓稳1,2

(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)

作者简介:何丽红（1978—），女，湖北浠水人，教授，博士，主要从事道路建筑材料方面的研究。E-mail： sunnyhlh@126.com 通信作者：温仙仙（1995—），女，宁夏中宁人，硕士研究生，主要研究方向为路面养护材料。E-mail： 1622819581@qq.com
基金资助:
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（2014 318 346 140）;材料工程重庆市研究生联合培养基地基金项目（201901）

Abstract

Abstract: 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 1.849 μm, 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.

Key words: highway engineering, emulsifier molecule, asphalt particles, average particle size, particle size distribution

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pH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1.849 μm，且粒径均匀分布在0.7～3 μm；其平均粒径随着皂液pH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。

关键词: 道路工程, 乳化剂分子, 沥青微粒, 平均粒径, 粒径分布

CLC Number:

U414

HE Lihong1,2, WEN Xianxian1,2, HOU Yitong 1,2, DENG Wen 1,2. Particle Size and Distribution Influencing Factors of Anionic Emulsified Asphalt[J]. Journal of Chongqing Jiaotong University(Natural Science), 2021, 40(06): 99-104.

何丽红1,2,温仙仙1,2,侯艺桐1,2,邓稳1,2. 阴离子乳化沥青粒径大小及分布影响因素分析[J]. 重庆交通大学学报（自然科学版）, 2021, 40(06): 99-104.

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Particle Size and Distribution Influencing Factors of Anionic Emulsified Asphalt

阴离子乳化沥青粒径大小及分布影响因素分析

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