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- W2018758460 abstract "본 연구에서는 다양한 포장용 콘크리트 배합의 건조수축 특성에 관한 실험결과를 분석하였다. 실험변수는 굵은골재의 종류(석회암, 사암, 화강암, 안산암, 편마암)와 잔골재의 종류(자연사, 부순모래) 및 콘크리트의 배합강도(보통강도, 고강도)를 달리하였다. 그리고 형상비가 22.2, 40, 85.7, 150, 200, 300을 갖도록 시편의 크기를 달리하였으며 코팅제(U&V-H(A,B))를 활용하였다. 다이얼게이지를 이용하여 항온(<TEX>$20^{circ}C$</TEX>) 항습(60%)에서 수행된 건조수축 실험은 길게는 1,014일 동안 측정하였다. KS에서 제시하는 표준시편에 비해 도로포장 모사용 슬래브 시편의 건조수축 변형률은 약 39% 감소되는 것으로 나타났다. 또한 동일한 형상비에 대해 굵은골재의 변화에 따른 건조수축 실험결과 석회암이 배합된 시편의 변형률이 사암대비 형상비별로 56~76% 범위에서 가장 낮게 측정되어 포장용 콘크리트로 사용되는데 유리할 것으로 판단된다. This study was performed to analyze test results on drying shrinkage for concrete specimens mixed with various constituents in concrete mixes. Test variables are coarse aggregate types(Limestone, Sandstone, Granite, Andesite, Gneiss), fine aggregate types(natural sand, crushed sand) and cement amounts(normal strength, high strength). Epoxy coating of(U&V-H(A,B)) was applied onto the specimen surface to simulate diverse volume surface ratios(22.2, 40, 85.7, 150, 200, 300) with different specimen sizes. The experiments had been executed during 1,014 days at a condition of <TEX>$20^{circ}C$</TEX> and relative humidity of 60% in environmental chambers. Test results showed that shrinkage strain from the specimen equivalent to real pavement decreased to 39% compared to the standard specimen recommended by KS. Test results also showed that shrinkage strain of the specimen mixed with Limestone was 56~76% of that with Sandstone, thus Limestone mix seems to be suitable to the concrete pavement." @default.
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- W2018758460 date "2012-02-15" @default.
- W2018758460 modified "2023-09-26" @default.
- W2018758460 title "Drying Shrinkage Evaluation of Concretes with Various Volume-Surface Ratios, Aggregate Types and Concrete Pavement Mixes" @default.
- W2018758460 doi "https://doi.org/10.7855/ijhe.2012.14.1.045" @default.
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