关键词: 道路工程;干缩特性;水泥稳定碎石;早强剂

Abstract: The experimental purpose was to study the dry shrinkage characteristic of the cement stabilized macadam material.5% cement was added to the stabilized macadam material, then the cement was replaced with 0%、8%、10%、12%、14%、16% dosages of early strength agent(SES-I).The change trend of water loss rate, dry shrinkage strain, dry shrinkage coefficient and relationship between dry shrinkage strain and water loss rate of the cement stabilized macadam material with different dosages of early strength agent were studied through experiments.The experimental result shows that the early strength agent can reduce the water loss rate, drying shrinkage strain, dry shrinkage coefficient of materials.16% of the early strength agent of the material drying shrinkage resistance is the strongest.Therefore, the early strength agent can improve material early strength and quicken the road construction speed, and moreover, it can also enhance the drying shrinkage of cement stabilized material and improve the cement stabilized macadam material early disease caused by drying shrinkage.

Key words: road engineering;dry shrinkage characteristic;cement stabilized macadam;early strength agent