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An Experimental Study on the Effect of Mineral Admixtures for the Durability of Shotcrete  

Paik, Shin-Won (Department of Safety Engineering, Hankyong National University)
Chung, Dok-Chu (Hyundai Industrial Development Corporation)
Publication Information
Journal of the Korean Society of Safety / v.19, no.2, 2004 , pp. 98-103 More about this Journal
Abstract
Shotcrete needs the enough durability without deterioration for life time. But shotcrete is being deteriorated according to aging like concrete by internal causes whithin itself and by external causes which can be physical, chemical, or mechanical. Durable shotcrete can be made by incresing the cement content, adding chemical and mineral admixtures and so on. So, in this study, chloride ion penetration test, freeze and thaw test, neutralization test were conducted to examine the durability characteristice of shotcrete with mineral admixtures such as silica fume, blast-furnace slag and fly ash. These results indicate that shotcrete with silica fume is durable. Therefore, the present study provides a firm base to make high performance shtcrete.
Keywords
durability; mineral admixture; silica fume; blast-furnace slag; fly ash;
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