温拌改性再生剂对AC-13废旧普通沥青混合料的性能

2.北京首发公路养护工程有限公司，北京  102610）

    摘要：利用自主研发的温拌改性再生剂对不同废旧普通沥青混合料（RAP）掺量的AC-13进行了温拌、改性与再生，并对再生沥青混合料进行了路用性能评价。结果表明，随着RAP掺量的增加，温拌改性再生沥青混合料的高温性能提高，但其低温性能、水稳定性和疲劳性能均下降；当RAP掺量为30%时，温拌改性再生沥青混合料的各项路用性能与SBS改性沥青混合料基本相当；当RAP掺量为45%时，温拌改性再生沥青混合料各项性能仍能符合JTG F40—2004的要求。

    关键词：废旧普通沥青混合料；温拌改性再生剂；RAP掺量；路用性能评价

    中图分类号：TU528.43        文献标识码：A        文章编号：1001-702X（2018）06-0033-04

 

Effect evaluation of warm mix modified regenerant on the performance of

waste common asphalt mixture AC-13

XU Shifa1，GUO Hongliang1，HE Zhimin2，HUANG Yuying1，LI Sitong1

（1.Beijing Urban Transportation Infrastructure Engineering Technology Research Center，School of Civil Engineering and Transportation，Beijing University of Civil Engineering and Architecture，Beijing 100044，China；

2.Beijing Shoufa Highway Maintenance Co. Ltd.，Beijing 102610，China）

    Abstract：The paper uses self-developed warm-mixing modified recycling agent to warm-mix，modify and recycle the AC-13 asphalt mixture with different Reclaimed Asphalt Pavement（RAP） proportion and evaluates the pavement performance of recycled asphalt mixture. The findings are：with increase of RAP proportion，the high-temperature property of modified warm-mixed recycled asphalt mixture was enhanced，yet the low temperature property，water stability and fatigue property all trended towards declination. Comparison with SBS modified asphalt mixture found that the pavement properties of modified warm-mixed recycled asphalt mixture were basically the same when the RAP proportion was 30%；while when RAP proportion was 45%，the properties of modified warm-mixed recycled asphalt mixture yet still can meet the requirements of JTG F40—2004.

    Key words：RAP，warm-mixing modified recycling agent，RAP content，road performance evaluation