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http://dx.doi.org/10.9720/kseg.2021.1.067

Development of Alkali Stimulant-Based Reinforced Grouting Material from Blast Furnace Slag Powder  

Seo, Hyeok (Department of Civil Engineering, Chosun University)
Jeong, Sugeun (Department of Civil Engineering, Chosun University)
Kim, Daehyeon (Department of Civil Engineering, Chosun University)
Publication Information
The Journal of Engineering Geology / v.31, no.1, 2021 , pp. 67-81 More about this Journal
Abstract
Grouting is used for reinforcement and waterproofing of soft ground to increase its bearing capacity, reduce the impacts of rising or lowering groundwater levels, and reduce subsidence due to vibration and general causes. This study investigated the enhancement of grout strength and hardening time by the addition of reinforcing fibers, and the development of non-cement grouting materials from blast furnace slag. An experiment was performed to measure the increase in grout strength resulting from the addition of 0.5% increments of aramid and carbon reinforcing fibers. The results show that the uniaxial compressive strength of grout increases with increasing content of reinforcing fiber. Comparison of three admixtures of finely powdered blast furnace slag and 10%, 20%, and 30% calcium hydroxide stimulating agent showed that the uniaxial compressive strength of the mixture increases with increasing content of alkaline stimulant; however, the strength was lower than for 100% pure cement. The reaction of calcium hydroxide with blast furnace slag powder, which increases the strength of the grout, is more effective if injected as a solution rather than a powder.
Keywords
blast furnace slag; aramid fiber; carbon fiber; uniaxial compressive strength; energy dispersive X-ray test;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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