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

Liang Jia, Li Zhang, Jian Guo, Kai Yao, Sin Mei Lim, Bin Li and Hui Xu
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Liang Jia: College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Li Zhang: College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Jian Guo: College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Kai Yao: Department of Civil and Environmental Engineering, National University of Singapore, Singapore 117576, Singapore
Sin Mei Lim: Department of Civil and Environmental Engineering, National University of Singapore, Singapore 117576, Singapore
Bin Li: School of Transportation, Wuhan University of Technology, Wuhan 430063, China
Hui Xu: Department of Civil and Environmental Engineering, National University of Singapore, Singapore 117576, Singapore

Sustainability, 2019, vol. 11, issue 15, 1-15

Abstract: 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 R 2 (from 0.86 to 0.97).

Keywords: unconfined compressive strength; lime; slag; loess; curing time (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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