Demolition wastes from Wenchuan Earthquake damaged structures were used to prepare AC25 asphalt mixtures.The moisture stability, high-temperature property and low-temperature property of asphalt mixture were respectively researched by residual Marshall stability test, tensile strength ratio test, high-temperature rutting test and low-temperature three-point bending test.Results indicate that the optimum asphalt content of asphalt mixture prepared using demolition wastes is higher than that using natural aggregate.And the residual Marshall stability, tensile strength ratio, dynamic stability and maximum bending strain can meet the request of China's Technical Specification for Construction of Highway Asphalt Pavements (JTG F40-2004) for asphalt mixture prepared using natural aggregate.%利用汶川地震建筑废弃物制备了AC-25型沥青混合料,并通过浸水残留马歇尔稳定度试验、冻融劈裂试验、高温车辙试验和低温三点弯曲试验对其水稳定性能、高温性能和低温性能进行了研究.研究表明,与天然骨料沥青混合料相比,利用地震建筑废弃物制备的沥青混合料的最佳油石质量比较高;但其浸水残留马歇尔稳定度、冻融劈裂抗拉强度比、动稳定度、最大弯拉应变等性能指标均满足<公路沥青路面施工技术规范>(JTG F40-2004)对天然骨料沥青混合料的技术要求.
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