基于性能设计法的就地热再生混合料设计方法研究

摘要

通过研究沥青老化及再生机理,分析了再生剂掺量对沥青及沥青混合料性能的影响,根据工程经验及室内试验,提出了就地热再生混合料技术要求;基于性能设计方法,通过室内试验进行了最佳再生剂掺量分析,进行了就地热再生混合料设计和性能验证方法的研究。实际应用表明：基于性能设计法设计的就地热再生路面具有较好的路用性能。%Through research on ageing and regeneration mechanism of asphalt,the influence of regenerant dosage on asphalt and its mixture is analyzed.The technology standard of in-place hot recycling mixture has been proposed according to engineering experience and laboratory test.The optimum content of regenerant has been determined through indoor tests based on performance design method,and the method of performance validation and the design of recycled mixture are studied.The research results have shown that the pavement has high performance using in-place hot recycling technology based on performance design method.