不同SBS含量的改性沥青对薄层磨耗层混合料路用性能影响  

Thin wearing mixture road performance impact assessment of different SBS content polymer modified asphalt

作　　者：付建村[1] 陈江[1] 胡家波[1] 樊亮[1] 

机构地区：[1]山东省交通科学研究所,济南250031

出　　处：《石油沥青》2008年第6期31-36,共6页Petroleum Asphalt

摘　　要：分析了不同SBS掺量(4.0%,4.5%,5.0%,5.5%)改性沥青对密实断级配薄层磨耗层混合料浙漏特性、飞散特性、高温稳定性及水稳定性等路用性能的影响.试验表明,随着SBS含量的增加,改性沥青的技术指标有明显提高,混合料的各项性能随之提高,当SBS含量大于5.0%时,改善效果最为显著,但是由于SBS含量增加,改性沥青存储稳定性有所下降。对剪切加工水平的依赖性增强,考虑到薄层磨耗层混合料的高技术要求,推荐SBS的掺量最好在5.0%以上,考虑原料造价和剪切加工水平,SBS的加入量最好控制在5.0%～6.0%。This paper mainly analyses the thin wearing mixture road performance such as draindown, surface loosening, anti-rutting and anti-water characteristic impact of different SBS content （4.0%, 4.5%, 5.0%, and 5. 5%） polymer modified asphalt. It indicates that the polymer modified asphalt and the mixture performance advances with the increase of SBS content, when the content≥5.0%, the effect is more distinct, however, the storage stability will descend and rely on the shearing process level. Considering the material cost and the machining property, it suggests the feasible content of SBS should be controlled within the range 5.0% and 6.0%.

关 键 词：SBS改性沥青 掺量 薄层磨耗层 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]