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Title |
An Experimental Study on the Early Strength Development Properties of Concrete According to Curing Condition and Used Materials
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Keywords |
조기강도 ; 유동특성 ; 강도특성 ; PC계 혼화제 ; 양생조건 early strength ; fluidity ; strength properties ; PC admixture ; curing temperature |
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Abstract |
The purpose of this study is to investigate the engineering properties of concrete for the early strength development. As a result of reviewing it by establishing each experimental factor and level, the cement had more excellent quality performance in CHC and HESPC than OPC. This study has shown that the PC series admixture was more excellent in side of elapsed time (aging) and early strength development than PNS series admixture. In addition, there was much difference according to the curing temperature, but the early strength development showed the considerable vulnerability in curing temperature below 12℃. To satisfy the strength requirements of 5 MPa/18 hr this study has shown that it needed the curing temperature over 17℃ to the minimum in OPC, over 14℃ in CHC, and over 11℃ in HESPC. On the other hand, as to the strength properties according to W/C, the less W/C was, the more strength development was excellent. If this study is to be used in construction filed on a basis of this result, this researcher is considered as possible of the economic execution of construction by advancing the early strength and by the reduction of construction cost according to shortening construction duration.
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