Impact on performance of cement stabilized macadam mixtures between gyratory compaction and static compaction methods(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2016年06期
- Page:
- 17-25
- Research Field:
- 道路工程
- Publishing date:
Info
- Title:
- Impact on performance of cement stabilized macadam mixtures between gyratory compaction and static compaction methods
- Author(s):
- LI Li-han; HUANG Pu; LIU Dong
- 1. Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804, China; 2. Jiangxi Transportation Institute, Nanchang 330200, Jiangxi, China
- Keywords:
- road engineering; cement stabilized macadam mixtures; gyratory compaction method; performance
- PACS:
- U416.214
- DOI:
- -
- Abstract:
- In order to explore the feasibility of using gyratory compaction method (GCM) to design the cement stabilized macadam mixtures (CSMM), the influence of performance between GCM and static compaction method (SCM) was analyzed, and three different kinds of CSMM specimens were prepared by GCM and SCM. Physical and mechanical indexes of specimens were measured to analyze the performance of different methods. Besides they were also compared with vibration compaction and test road results. The results show that the compaction method is the key factor affecting the performance of CSMM. Dry density-moisture curve of CSMM can be obtained by GCM, so that the optimum moisture content and maximum dry density can be determined. Compared with heavy compaction, optimum moisture content of GCM decreases by 6.7% on average, and maximum dry density increases by 2.0% on average. Compared with SCM, unconfined compressive strength at 7th day of GCM increases by 117% and splitting strength at 28th day increases by 106% on average. Framework structure has better anti-load capacity and lower fragmentation degree. The coarse and fine aggregates can achieve a better embedding state in compaction process and specimens of dense-skeleton structure prepared by GCM have best performance. Physical and mechanical indexes of CSMM between GCM and SCM have linear relationship. 7 d unconfined compressive strength of GCM, distribution and fragmentation of aggregates are closer to the vibration compaction method and test road. Using GCM to design the cement stabilized macadam mixtures is reasonable and feasible.
Last Update: 2016-12-02