旧沥青对冷再生基层材料强度影响的研究

The Study on the Influence of Wasted Bitumen to the Strength of Cool Recycled Mixture

本文在对旧路面层冷再生材料组成分析的基础上,试验测定了几种不同配合比的冷再生材料以及相对应配合比的标准水泥或二灰稳定碎石的无侧限抗压强度、劈裂强度,并依据试验结果对旧沥青对冷再生材料强度的影响进行了分析。研究表明:旧沥青对冷再生材料的强度起着降作用,即冷再生材料的抗压强度和劈裂强度比常规的水泥和二灰碎石稳定材料的抗压强度和劈裂强度偏低。

On the base of the composition analyses for cool recycled mixture, the unconfined compressive and tensile strength of cool recycled mixture with different ratio of constitution were measured, and the test results were compared with that of the standard cement or fly-ash stabilized materials. According to the test results, the influence of the wasted bitumen to the cool recycled was analysed. The study have showed that wasted bitumen declined the strength of cool recycled, which mean the strength of cool recycled mixture is lower than that of standard cement or fly -ash stabilized materials.