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Strength and Durability Properties of Concretes Using Ground Granulated Blast-Furnace Slag According to Steam Curing Types  

Hong, Chang-Woo (Division of Civil Engineering, Chungju National University)
Jang, Ho-Sung (Division of Civil Engineering, Chungju National University)
Jeong, Won-Kyong (Division of Civil Engineering, Chungju National University)
Publication Information
Resources Recycling / v.15, no.4, 2006 , pp. 52-59 More about this Journal
Abstract
The purpose of this study was to evaluate the effects of ground granulated blast-furnace slag on strength development and durability of ordinary portland cement concrete (OPC) with steam curing types. Main experimental variables were slag contents(0%, 10%, 30%, 50%, 70%) and curing types (standard, accelerated curing). It were performed to check the basic properties of concretes that compressive strength, rapid chloride ion permeability and chemical resistance. From the result, we have found that increasing the amount of blast-furnace slag produced concrete with increased compressive strength and permeability resistance. Rapid freezing-thawing test showed that they were good enough to protect the concrete structures and to carry out cyclic freezing and thawing. The freeze-thaw resistance of blast-furnace slag produced concretes maintained above 90% of relative dynamic modulus after 300 freezing-thawing cycles. Increasing the amount of blast-furnace slag produced concretes with increased chemical resistance.
Keywords
blast furnace slag; steam curing; permeability; freeze-thaw resistance;
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