Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Autogenous shrinkage of high-strength concrete containing silica fume under drying at early ages
AbstractThe present study investigated experimentally autogenous shrinkage of high-strength concrete containing silica fume under drying at early ages. The influence of drying on hydration of cementitious materials in the high-strength concrete with water–binder ratios of 0.25, 0.35 and 0.45 was evaluated based on bound water content (BWC), which was exposed to drying at the ages of 0.5, 1.0 and 3.0 days, respectively. By establishing the relationship between the BWC and autogenous shrinkage strain under sealed conditions, autogenous shrinkage strain under drying conditions and drying shrinkage strain were separated from total shrinkage strain, and, then, the contribution of autogenous shrinkage in total shrinkage was discussed. The results showed that the percentage of autogenous shrinkage was macroscopically 50–20% based on the present method, while that was 70–30% based on the conventional superposition principle (SP). The latter resulted in overestimating autogenous shrinkage strain under drying conditions.
Autogenous shrinkage of high-strength concrete containing silica fume under drying at early ages
AbstractThe present study investigated experimentally autogenous shrinkage of high-strength concrete containing silica fume under drying at early ages. The influence of drying on hydration of cementitious materials in the high-strength concrete with water–binder ratios of 0.25, 0.35 and 0.45 was evaluated based on bound water content (BWC), which was exposed to drying at the ages of 0.5, 1.0 and 3.0 days, respectively. By establishing the relationship between the BWC and autogenous shrinkage strain under sealed conditions, autogenous shrinkage strain under drying conditions and drying shrinkage strain were separated from total shrinkage strain, and, then, the contribution of autogenous shrinkage in total shrinkage was discussed. The results showed that the percentage of autogenous shrinkage was macroscopically 50–20% based on the present method, while that was 70–30% based on the conventional superposition principle (SP). The latter resulted in overestimating autogenous shrinkage strain under drying conditions.
Autogenous shrinkage of high-strength concrete containing silica fume under drying at early ages
Yang, Yang (Autor:in) / Sato, Ryoichi (Autor:in) / Kawai, Kenji (Autor:in)
Cement and Concrete Research ; 35 ; 449-456
03.06.2004
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Autogenous shrinkage of high-strength concrete containing silica fume under drying at early ages
| Online Contents | 2005
Autogenous shrinkage of high-strength concrete containing silica fume under drying at early ages
| British Library Online Contents | 2005
Factors affecting the autogenous shrinkage of silica fume high-strength concrete
| British Library Conference Proceedings | 1999
Autogenous Shrinkage of Concrete at Early Ages
| Springer Verlag | 2019