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http://dx.doi.org/10.5516/NET.09.2010.031

ASSESSMENT OF PROPERTIES AND DURABILITY OF FLY ASH CONCRETE USED IN KOREAN NUCLEAR POWER PLANTS  

Cho, Myung-Sug (KHNP-Central Research Institute, Korea Hydro & Nuclear Power Co., LTD.)
Noh, Jae-Myoung (KHNP-Central Research Institute, Korea Hydro & Nuclear Power Co., LTD.)
Publication Information
Nuclear Engineering and Technology / v.44, no.3, 2012 , pp. 331-342 More about this Journal
Abstract
Since the opening of the Shin-Kori #1,2 in 2005, fly ash mixed concrete has been used for NPP concrete structures under construction in Korea with the aim of preventing aging and improving durability. In this paper, the quality suitability of fly ash manufactured in Korea is assessed and the basic physical properties of fly ash mixed concrete and its durability against primary causes of aging are verified through experimental methods. Because of the internal structure filling effect from the pozzolanic reaction of fly ash and the resulting improvements in mechanical performance in such areas as strength and salt damage resistance, the durability of fly ash mixed concrete is shown to be superior. It is judged that this result can be applied in measures not only for improving the safety of NPP structures in operation in Korea but also for implementing effective structure life management should extending the life of structures be needed in the future.
Keywords
Fly Ash; Type I Cement; Type V Cement; Durability; Pozzolanic Reaction; Nuclear Power Plants;
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  • Reference
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