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结合西商高速公路沥青路面工程实际,对布敦岩沥青(BRA)混合料的路用性能进行研究。对BRA的掺加方式和施工工艺进行了探索。结果表明:采用“干法”改性工艺可以更好的发挥BRA的作用。BRA能改善沥青混合料的高温稳定性、水稳定性和低温抗裂性能,可应用于我国高速公路沥青混凝土路面工程中。
Combining with the actual asphalt pavement engineering of Xichang Expressway, the road performance of Bourdon rock asphalt (BRA) mixture was studied. The way of BRA blending and construction technology are explored. The results show that BRA can be played better by adopting “dry method” modification process. BRA can improve the high temperature stability of asphalt mixture, water stability and low temperature anti-cracking performance, can be applied to asphalt pavement projects in China’s highway.