掺乳化沥青水泥稳定碎石材料的路用性能

郭科

山西省交通规划勘察设计院有限公司，山西 太原  030006

摘要：为解决水泥稳定碎石基层的开裂及耐久性不良等问题，分析掺乳化沥青后水泥稳定碎石材料的力学性能、抗冻性能、干缩与温缩性能、施工和易性能变化，采用无侧限抗压强度控制掺加乳化沥青的质量分数，并通过和易性试验确定材料的施工延迟时间。分析材料的综合性能，结果表明,掺加一定量的乳化沥青后可改善水泥稳定碎石材料的路用性能，此类材料适用于低温、温差变化较大、中轻交通等区域的道路基层与底基层。

关键词：乳化沥青；水泥稳定碎石；无侧限抗压强度；和易性；路用性能

Road performance of cement stabilized crushed stone material mixed with emulsified asphalt

GUO Ke

Shanxi Transportation Planning Survey and Design Institute Co., Ltd.，Taiyuan 030006,China

Abstract:In order to solve the problems of cracking and poor durability of cement stabilized macadam base, the mechanical properties, frost resistance, dry shrinkage and temperature shrinkage properties, construction and ease of construction of cement stabilized crushed stone materials after mixing with emulsified asphalt were analyzed. The unconfined compressive strength index controls the mass fraction of emulsified asphalt, and the construction delay time of the material is determined by workability test. The comprehensive properties of the materials are analyzed, and the results show that adding a certain amount of emulsified asphalt can improve the pavement performance of cement stabilized crushed stone materials, which is suitable for road base and sub-base in areas such as low temperature, large temperature difference, medium and light traffic.

Keywords:emulsified asphalt; cement stabilized crushed stone; unconfined compressive strength; workability; pavement performance