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http://dx.doi.org/10.12814/jkgss.2019.18.4.253

A Study on Unconfined Compressive Strength of CLSM with Paper Sludge Ash  

Park, Jeong-Jun (Incheon Disaster Prevention Research Center, Incheon National University)
Lee, In-Hwan (Department of Civil and Environmental Engineering, Incheon National University)
Shin, Eun-Chul (Department of Civil and Environmental Engineering, Incheon National University)
Hong, Gigwon (Institute of Technology Research and Development, Korea Engineering & Construction)
Publication Information
Journal of the Korean Geosynthetics Society / v.18, no.4, 2019 , pp. 253-262 More about this Journal
Abstract
This paper described the evaluation results on unconfined compressive strength characteristics of CLSM with paper sludge ash, in order to develop a CLSM that can prevent sewer pipe damage. The flowability test and the unconfined compressive strength test were performed according to mix design condition of CLSM. The flowability test result showed that the water content, which can satisfy the flowability criteria, was 24% to 32% according to the mix design condition. The results of unconfined compressive strength test showed that the strength incremental ratio was high between 1 and 7 days of curing time, and the strength at this time was more than about 50% of the strength at 28 days of curing time. The strength of CLSM was greatly influenced by fly ash. However, it was analyzed that the mixture of paper sludge ash is required when the reference strength of CLSM is considered. Although the strength of the high cement ratio was higher than that of the low cement, a cement ratio of 5% would be a reasonable mix design condition of CLSM.
Keywords
Paper sludge ash; Fly ash; CLSM; Unconfined compressive strength; Backfill material;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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