Performance evaluation of stone and rap interlayers in soil-cement pavements under accelerated loading
Document Type
Conference Proceeding
Publication Date
12-1-2008
Abstract
This paper presents the finding from a full-scale accelerated pavement testing study on three flexible pavement test lanes. The three lanes generally varied in their base (or interlayer) and sub-base materials, but had similar hot mix asphalt top layers. The objectives of this study were: (1) to determine the effectiveness of using an untreated reclaimed asphalt pavement (RAP) interlayer in lieu of stone interlayer in a soil-cement asphalt pavement structure; and (2) to investigate the performance of soil cement sub-base layers by varying layer thickness and cement content. The accelerated test was terminated due to severe rutting developed on each of test lanes. The field performance was monitored using Falling Weight Deflectometer (FWD) and DYNAFLECT tests as well as rutting and surface cracking measurements. This study concluded that an untreated RAP interlayer in a soil-cement pavement structure was as effective as the crushed stone interlayer. In addition, the rutting performance of a soil cement layer was found influenced more by layer thickness than by cement content. © 2008 ASCE.
Publication Source (Journal or Book title)
Proceedings of the 7th International Conference of Chinese Transportation Professionals Congress 2007: Plan, Build, and Manage Transportation Infrastructures in China
First Page
712
Last Page
722
Recommended Citation
Wu, Z., Zhang, Z., & Mohammad, L. (2008). Performance evaluation of stone and rap interlayers in soil-cement pavements under accelerated loading. Proceedings of the 7th International Conference of Chinese Transportation Professionals Congress 2007: Plan, Build, and Manage Transportation Infrastructures in China, 712-722. https://doi.org/10.1061/40952(317)69