【摘要】 冻裂是多年冻土地区沥青路面的主要病害。本文介绍青藏公路第三期改建工程采用的橡胶改性沥青混合料的设计方案,经过室内试验研究和实际应用,证明这种沥青混合料具有良好的低温抗裂性、耐久性和便于施工等特点,从而为多年冻土地区修筑高等级沥青路面提供了依据。更多还原

【Abstract】 Frost crack is main distress on bitumen parement in permafrost area. This paper introduces the design plan of rubber—modified bitumen mixture which is adopted in the third reconstructing project of Qingzhang Highway. By tested in laboratory and applicated in practice,it is showed that the bituminous mixture has good anti—crack performance at low temperature and good durability,and is cenvenient for construction,so provides the accordance for constructing high—class bituminous pavement in permafrost area.更多还原