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Open AccessArticle

Evaluation on Strength Properties of Lime–Slag Stabilized Loess as Pavement Base Material

by Liang Jia 1, Li Zhang 1, Jian Guo 1, Kai Yao 2,*, Sin Mei Lim 2, Bin Li 3 and Hui Xu 2,4
College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Department of Civil and Environmental Engineering, National University of Singapore, Singapore 117576, Singapore
School of Transportation, Wuhan University of Technology, Wuhan 430063, China
School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China
Author to whom correspondence should be addressed.
Sustainability 2019, 11(15), 4099;
Received: 3 July 2019 / Revised: 23 July 2019 / Accepted: 25 July 2019 / Published: 29 July 2019
(This article belongs to the Special Issue Sustainable Pavement Materials, Design and Construction)
This study aimed to investigate the feasibility of using lime–slag stabilized loess as base-course material by assessing its unconfined compressive strength (UCS). Loess stabilized with various mix ratios were compacted and cured to three, five, seven, and 28 days, respectively, for further strength tests. The effects of binder content, lime-to-slag (L/S) ratio, porosity, and curing time on the UCS of stabilized loess were addressed in detail. The test results show that UCS increases with the increase in binder content or curing time, and it gains strength rapidly within the first seven days of curing. At the same binder content, UCS decreases with the decrease in L/S ratio or porosity. Finally, the correlations of UCS with binder content, porosity, and curing time were derived, which exhibited reasonable correlation coefficients R2 (from 0.86 to 0.97). View Full-Text
Keywords: unconfined compressive strength; lime; slag; loess; curing time unconfined compressive strength; lime; slag; loess; curing time
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Jia, L.; Zhang, L.; Guo, J.; Yao, K.; Lim, S.M.; Li, B.; Xu, H. Evaluation on Strength Properties of Lime–Slag Stabilized Loess as Pavement Base Material. Sustainability 2019, 11, 4099.

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