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- Title
温拌再生沥青混合料的压实特性研究.
- Authors
纪小平; 许辉; 侯月琴; 谭学章
- Abstract
A method for determining the mixing and compaction temperature of warm mixed reclaimed asphalt mixture(WMRA) was proposed and superpave gyratory compacter(SGC) was used to prepare the specimens. The volume parameters and densification characteristics of SGC densification curve were compared with WMRA and hot mixed reclaimed asphalt mixture(HMRA). Research results indicate that the slopes of densification curve K1 and K2 decrease, and air void(VV), compaction energy index(CEI) and traffic densification index(TDI) gradually increase as the proportion of recycled asphalt pavement (RAP) increasing. The compacting performance and compaction speed gradually decrease and the capacity of resistance from deformation after opening to traffic increases as the proportion of RAP increasing. The VV and CEI of WMRA are smaller than those of HMRA when the compaction temperature is 30 °C lower in preparation of the specimens of WMRA, with the result that the warm mix agents can greatly improve the workability of mixtures. The K1 , K2 and TDI are almost equivalent between WMRA and HMRA, that is say, the warm mix agents are incapable to improve the compaction speed and resistance from deformation.
- Publication
Jianzhu Cailiao Xuebao: Journal of Building Materials, 2014, Vol 17, Issue 2, p349
- ISSN
1007-9629
- Publication type
Article
- DOI
10.3969/j.issn.1007-9629.2014.02.031