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Flexural performance of RC members made of low shrinkage-high strength concrete
Flexural behavior under short-term loading of reinforced concrete (RC) beams made of low shrinkage-high strength concrete was experimentally investigated. The lowshrink characteristic is ensured by using expansive additive and/or low heat Portland cement. Flexural cracking moment, crack width, deflection, as well as the shrinkageinduced stress in RC beams made of low shrinkage-high strength concretes were compared with those of RC beam made of conventional high strength concrete. Experimental results showed that the use of expansive additive is remarkably effective in improving the flexural performance of RC beam. Low heat Portland cement is found to be useful for controlling the autogenous shrinkage and its induced stress of high-strength concrete. As a result, the combination of low heat Portland cement and expansive additive is particularly effective in improving the flexural performance of RC beam. In addition, it is demonstrated that crack widths and curvatures of RC beams made of concrete having shrinkage/expansion can nearly well be calculated considering the tension stress increase in reinforcement from the state corresponding to zero stress in concrete as the same depth of tension reinforcement to the state under load considered.
Flexural performance of RC members made of low shrinkage-high strength concrete
Flexural behavior under short-term loading of reinforced concrete (RC) beams made of low shrinkage-high strength concrete was experimentally investigated. The lowshrink characteristic is ensured by using expansive additive and/or low heat Portland cement. Flexural cracking moment, crack width, deflection, as well as the shrinkageinduced stress in RC beams made of low shrinkage-high strength concretes were compared with those of RC beam made of conventional high strength concrete. Experimental results showed that the use of expansive additive is remarkably effective in improving the flexural performance of RC beam. Low heat Portland cement is found to be useful for controlling the autogenous shrinkage and its induced stress of high-strength concrete. As a result, the combination of low heat Portland cement and expansive additive is particularly effective in improving the flexural performance of RC beam. In addition, it is demonstrated that crack widths and curvatures of RC beams made of concrete having shrinkage/expansion can nearly well be calculated considering the tension stress increase in reinforcement from the state corresponding to zero stress in concrete as the same depth of tension reinforcement to the state under load considered.
Flexural performance of RC members made of low shrinkage-high strength concrete
Biegeverhalten von RC Teilen aus geringschrumpfendem, hochfesten Beton
Tanimura, M. (author) / Hiramatsu, Y. (author) / Hyodo, H. (author) / Sato, R. (author)
2002
16 Seiten, 16 Bilder, 7 Tabellen, 16 Quellen
Conference paper
English
Flexural Performance of RC Members Made of Low Shrinkage-High Strength Concrete
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