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http://dx.doi.org/10.7844/kirr.2018.27.6.30

Experimental Study on Low-pH, Anti-washing Grouts Incorporating Gypsum for Reinforcement of Underwater Cavities  

Kim, Young-sang (Department of Civil Engineering, Chonnam National University)
Baek, Jeong Jin (School of Architecture, Chosun University)
Kim, Hyeong-Ki (School of Architecture, Chosun University)
Publication Information
Resources Recycling / v.27, no.6, 2018 , pp. 30-37 More about this Journal
Abstract
A series of experiment was conducted to evaluate basic performances of low-pH, anti-washing grouts incorporating gypsum which applied for reinforcing underwater cavities in limestone- grounds. Various types of mix proportions were designed and the fluidity, strength and environmental impact of these mixtures were evaluated. The flowability was evaluated under two conditions, i.e., flows without and with pressing, respectively. Strength was measured for the hardened mixtures fabricated under conditions of air and water injections. The environmental impacts including the pH of the suspension and the suspended solids concentration for the mixtures were evaluated. The low pH of fresh mixture suspension, below than 10, was achieved by incorporation of gypsum. The mix proportions of cement-quartz powder-gypsum binders and chemical agents resulted in mortar natural flow 7-10 cm and uniaxial compressive strength 4 MPa were derived.
Keywords
Underwater cavities; filling grout; low pH; gypsum; flowability; environmental impact;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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