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Title |
Evaluation of Durability Characteristics of High Performance Shotcrete Using Fly Ash
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Keywords |
산업부산물 ; 플라이애쉬 ; 실리카퓸 ; 숏크리트 ; 내구특성 industrial by-products ; fly ash ; silica fume ; shotcrete ; durability characteristics |
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Abstract |
The industrial by-product market has increased at a geometric rate worldwide with the rapid economic growth. At present time, conventional disposal methods of industrial by-products in Korea including landfill, incineration and storage already have reached their limits. In this study, the industrial by-products such as fly ash and silicafume were used as mineral admixtures, which are commonly added to concrete mix to inhance the economic efficiency, long-term strength and durability of concrete, to determine the optimized mix proportion of high performance shotcrete. Through the series of tests (compressive strength test, accelerated chloride ion penetration test, measurement of chloride diffusion coefficient). The results of the study showed that the proposed mix proportions satisfied the requirements of domestic as well as international guidelines for shotcrete, with a higher durability than the existing shotcrete.
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