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Title |
Evaluation of Engineering Properties in Early-Age Concrete with TDFA
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Authors |
박재성(Jae-Sung Park) ; 박상민(Sang-Min Park) ; 김혁중(Hyeok-Jung Kim) ; 권성준(Seung-Jun Kwon) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2016.20.5.001 |
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Keywords |
TDFA(Tire Derived Fuel Ash) ; Durability ; Fly ash ; Workability ; Carbonation resistance ; Chloride resistance |
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Abstract |
This paper presents an evaluation of engineering properties in TDFA(Tire Derived Fuel Ash)- based concrete in early age. Concrete containing 0.5 of w/b(water to binder) ratio and 20% of FA(Fly Ash) replacement ratio are prepared, and FA content are replaced with TDFA from 3% to 12% for evaluating the effect of TDFA on fresh and hardened concrete properties. With higher than 6% of TDFA replacement ratio, workability is significantly worsened but it is improved with more SP(Super plasticizer) and AE(Air Entrainer) agent. Concrete with 6~12% of TDFA shows reasonable strength development and better resistance to carbonation and chloride attack in spite of early-aged condition. However concrete with 6% TDFA shows poor resistance to freezing and thawing action due to insufficient air content. If air content and workability are obtained, replacement of TDFA to 12% can be used for concrete with FA.
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