摘要
为研究橡胶沥青混合料老化及再生后的路用性能,采用热氧老化的方法,研究了老化时间对橡胶沥青混合料高温稳定性、低温抗裂性及水稳定性的影响;通过热拌再生研究了再生后混合料的路用性能。结果表明,橡胶沥青老化后低温抗裂性能发生严重衰减,间断级配的橡胶沥青混合料比连续级配的橡胶沥青混合料耐老化。老化后橡胶沥青混合料高温稳定性得到增强,低温抗裂性下降,抗水损害能力降低。橡胶沥青混合料老化再生后,具有良好的高温稳定性,低温抗裂性和水稳定性。
Properties of rubber modified asphalt mixtures after thermo-oxidative ageing are studied with different aging times.It reviewed that the properties of mixture hardly dropt after ageing,and the mixture with gap grading shows greater ageing-resistant performance than that with continuous grading.It revealed that the high-temperature stability of aged rubber modified asphalt was enhanced while its low temperature crack resistance and water stability reduced hardly.However,the reclaimed rubber modified asphalt mixtures obtained quite desired performance.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2012年第10期48-52,共5页
Journal of Wuhan University of Technology
基金
西部交通建设科技项目(2008 318 000 29)
关键词
热氧老化
橡胶沥青混合料
沥青混合料再生
路用性能
thermo-oxidative ageing
rubber modified asphalt mixtures
reclaimed asphalt mixture
road performance
