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http://dx.doi.org/10.4334/JKCI.2014.26.5.607

Durability Assessment for Crushed Sand Wet-mix Shotcrete Mixed with Mineral Admixtures  

Lee, Kyeo-Re (Dept. of Civil Engineering, Kangwon National University)
Han, Seung-Yeon (Dept. of Civil Engineering, Kangwon National University)
Nam Gung, Kyeong (Dept. of Civil Engineering, Kangwon National University)
Yun, Kyong-Ku (Dept. of Civil Engineering, Kangwon National University)
Publication Information
Journal of the Korea Concrete Institute / v.26, no.5, 2014 , pp. 607-614 More about this Journal
Abstract
The purpose of this dissertation was to investigate the effect of mineral admixtures, such as fly ash, blast furnace slag powder, meta kaolin and silica fume, on the basic properties and durability of crushed sand shotcrete, selecting a series of shotcrete mixtures with a variable admixture. Compressive strength increased as the content of mineral admixtures increased, specially it was the most effective when using meta kaolin both at sample specimen and core after shotcreting. Rapid chloride ion permeability test and sulfuric acid resistance test showed that both durability increased as the substitute rate of mineral admixture increased. In air void analysis with image analysis, the targeted the spacing factor and specific surface were not satisfied because air-entrained agent was not used.
Keywords
wet-mix shotcrete; durability; fly ash; blast furnace slag powder; meta kaolin; silica fume;
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