沥青混合料中集料吸水率研究

摘要

During the construction of asphalt pavements, the construction period is often extended and the cost is increased due to the rejection of aggregate as the water absorption of asphalt aggregate exceeds the standard requirements. The paper conducts a theoretical study and experimental research, on the basis of which, indexes such as soundness are proposed for comprehensive evaluation of the usability of aggregate with excessive water absorption and the applicable conditions for this type of aggregate and the keys in quality control of construction of asphalt pavements are analyzed, which have been employed and verified in actual engineering works.%在沥青路面施工中,常因集料吸水率超标而需另选其它料源,造成工程工期延长,成本增加.文中就该问题进行了理论和试验研究,得出了采用坚固性等指标综合判断吸水率超标集料可用性的方法,分析了采用这种集料的适用条件和施工中的质量控制重点,并在实际工程中得到应用和验证.