摘要
对火山灰-SBS(苯乙烯丁二烯苯乙烯嵌段共聚物)复合改性沥青混合料,橡胶粉-SBS复合改性沥青混合料和SBS改性沥青混合料在不同温度条件下的压缩变形行为进行了系统研究,揭示了上述3种沥青压缩变形的微观机制。分别在40、25、20、0、-20和-40℃,采用压缩试验测试沥青混合料样品在静压力作用下的力学性能。研究结果表明:在20℃以上时,添加火山灰和橡胶粉可以明显提高SBS改性沥青的压缩性能,其中添加火山灰样品的压缩强度提升了30%。在0、-20℃时,SBS在提高压缩强度中起主导作用,SBS改性沥青混合料样品的压缩强度则优于复合改性样品,但在-40℃时,火山灰颗粒改善了沥青胶浆的收缩性能,显著提高了复合改性沥青混合料的压缩性能。
Compressive behavior of volcanic ash-Styrene-Butadiene-Styrene （SBS）, rubber powder-SBS and SBS modified asphalt mixtures at different temperatures were investigated. Then the deformation mechanism in the compression process of the three kinds of asphalts were revealed. The compressive properti6s of the asphalt mixture samples were tested at temperatures of 40, 25, 20, 0, -20 and -40℃ by static compressive tests. Experiment results show that the compressive properties of the asphalts were significantly promoted above the temperature of 20 ℃ by adding the volcanic ash and the rubber into the SBS modified asphalt mixture, respectively, the compressive strength was increased by 30% by adding volcanic ash. SBS plays a dominant role at the temperatures of 0 ℃ and -20 ℃ in the asphalts, and the compressive strength of SBS modified asphalt mixture is higher than that of the ash-SBS and performance compressive others. rubber powder-SBS modified aspha of the asphalt mortar when the property of the volcanic ash-SBS it mixtures. The volcanic ash improves the shrink temperature descends to -40 ℃, and thus modified asphalt mixture is better than that of age the
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2017年第6期1861-1867,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
吉林省交通运输科技计划科研项目(2012-4-1-10)
