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Title |
Effect of Addition of Ground Granulated Blast-furnace Slag on Strength Properties of Autoclaved Polymer-Modified Concrete
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Keywords |
오토클래이브 양생; 폴리머 시멘트 콘크리트; 폴리머-결합재비; 고로슬래그 치환율; 강도; autoclaving; polymer-modified concrete; polymer-binder ratio; slag content; strength |
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Abstract |
The effects of slag content and polymer-binder ratio on the strength properties of autoclaved SBR-modified concretes using ground granulated blast-furnace slag(slag) and a styrene-butadiene rubber (SBR) latex are examined. As a result, the compressive and tensile strengths of the autoclaved SBR-modified concretes using slag increase with increasing slag content, and reach a maximum at a slag content 40％, and increase with increasing polymer-binder ratio. In particular, the autoclaved SBR-modified concretes with a slag content of 40％ provide about three times higher tensile strength than unmodified concretes. Such high strength development is attributed to the high tensile strength of SBR polymer and the improved bond between cement hydrates and aggregates because of the addition of SBR latex.
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