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Title |
Durability Assessment for Crushed Sand Wet-mix Shotcrete Mixed with Mineral Admixtures
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DOI |
https://doi.org/10.4334/JKCI.2014.26.5.607 |
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Keywords |
습식 숏크리트 ; 내구성 ; 플라이애시 ; 고로슬래그 미분말 ; 메타카올린 ; 실리카퓸 ; wet-mix shotcrete ; durability ; fly ash ; blast furnace slag powder ; meta kaolin ; silica fume |
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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.
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