抗冰添加剂改性乳化沥青黏结料稳定性研究

Study on Stability of Emulsified Asphalt Binder Modified by Anti-ice Additives

摘要:

研究了抗冰添加剂掺量、Zeta电位、细度模数、堆积密度等因素以及乳化剂类型对乳化沥青黏结料防冰冻性能和稳定性的影响。结果表明：随着抗冰添加剂掺量的增加，阳离子乳化沥青黏结料的稳定时间不断减少；阳离子抗冰添加剂乳化沥青黏结料的稳定性优于阴离子抗冰添加剂乳化沥青黏结料，且阳离子乳化沥青黏结料的稳定时间随其Zeta电位的增加而延长；堆积密度越小、粒径越细的抗冰添加剂与阳离子乳化沥青混合后稳定性越差。

Abstract:

The influences of anti-ice additive content, Zeta potential, fineness modulus, bulk density and other factors as well as the type of emulsifier on the anti-freezing performance and stability of emulsified asphalt binder are studied. The results show that the stability time of cationic emulsified asphalt binder decreases with the increase of anti-ice additive content. The stability of cationic anti-ice additive emulsified asphalt binder is better than that of anionic anti-ice additive emulsified asphalt binder. And the stability of cationic emulsified asphalt binder is proportional to the increase of Zeta potential of anti-ice additive. The smaller the bulk density and the finer the particle size, the worse the stability of the anti-ice additive after mixed with the cationic emulsified asphalt.