摘要
沥青膜的厚度对沥青混凝土的技术性质有显著的影响 ,通常推荐沥青膜的最小厚度在 6～ 8μm ,然而这一结论并没有充分的研究论据。本文研究沥青膜厚对不同级配沥青混合料工程性质的影响 ,确定对于不同级配下沥青混凝土中沥青膜厚的最佳值。对于空隙率为 3～ 6 %的沥青混合料 ,最佳的沥青膜厚应在 8μm左右 ;对于空隙率为 4～ 10 %的沥青混合料 ,最佳的沥青膜厚应在 10 μm左右 ;对于空隙率为 15 %以上的大空隙沥青混合料 ,最佳的沥青膜厚应在 12 μm左右。
Asphalt film thickness has a significant influence on performance of asphalt mixtures. Generally the recommended minimum asphalt film thickness ranges from 6 to 8 μ m,but it is concluded on insufficient research grounds. This paper studies the effect of asphalt film thickness on performance of asphalt mixtures in order to determine the optimum asphalt film thickness of different asphalt mixtures. The results show that the optimum asphalt film thickness is about 8 μ m for asphalt mixture with 3～6% air voids,the optimum asphalt film thickness is about 10 μ m for asphalt mixture with 4～10% air voids,and the optimum asphalt film thickness is about 12 μ m for asphalt mixture with above 15% air voids.
出处
《公路交通技术》
2004年第3期30-34,共5页
Technology of Highway and Transport
