Performance Study on Anti-Rutting MPE Modified Asphalt Mixture

doi:10.3969/j.issn.1674-0696.2013.01.09

Abstract

Abstract: Through adopting MPE and SBS modifiers，the adhesion of base asphalt with granite，MPE modified asphalt and crushed stone were studied comparatively． The road properties of acid granite gravel mixed separately with base asphalt，SBS modified asphalt both including anti-stripping agent and MPE modified asphalt were also researched． Firstly，the adhesion rank of MPE modified asphalt mixed with granite gravel is the fifth level． Secondly，the dynamic stability of AC-13 asphalt with MPE is more than 6000 mm per stroke at 60℃，more than 5000 mm per stroke at 70℃ and more than 2000 mm per stroke at 80℃． Moreover，the Marshall stability of asphalt mixtures with MPE is 35% higher than that of matrix asphalt mixtures，and 23% higher than that of 5% SBS modified asphalt mixture． Besides，bits immersion residual stability reaches 98% which increases by 11% compared with that of matrix asphalt mixtures and by 5% compared with that of SBS modified asphalt mixtures． Lastly，its TSR reaches 97% which increases by 8% compared with that of matrix asphalt mixtures．

Key words: MPE, asphalt mixture, modifier, pavement performance, dynamic stability

摘要： 采用MPE 和SBS 两种改性剂,对比研究了基质沥青、MPE 改性沥青与花岗岩碎石的黏附性；分析了加抗剥落剂的基质沥青、加抗剥落剂的SBS 改性沥青和MPE 改性沥青与酸性花岗岩碎石混合料的路用性能。研究结果表明: MPE 改性沥青和花岗岩碎石的黏附等级为5 级；掺加MPE 的AC-13 沥青混合料,其动稳定度为60, 70, 80℃条件下分别超过6 000,5 000,2 000 次/mm,马歇尔稳定度比基质沥青混合料提高35%,比掺加5% SBS 的改性沥青混合料提高23%；浸水残留稳定度达到98%,比基质沥青混合料提高11%,比SBS 改性沥青混合料提高5%；冻融劈裂残留强度比达到97%,较基质沥青提高8% 。

关键词: MPE, 沥青混合料, 改性剂, 路用性能, 动稳定度

CLC Number:

TU528

Huang Weirong,Cui Tong. Performance Study on Anti-Rutting MPE Modified Asphalt Mixture[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(1): 37-40.

黄维蓉，崔通. 抗车辙MPE改性沥青混合料性能研究[J]. 重庆交通大学学报（自然科学版）, 2013, 32(1): 37-40.

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