Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modelling of autogenous shrinkage of hardening cement paste
Highlights A simulation model for autogenous deformation is proposed. Investigation of the role of creep on autogenous shrinkage. Experimental investigation of early age properties of cement pastes. Experimental and numerical study of the autogenous shrinkages of Portland cement paste and BFS cement paste.
Abstract In recent decades, several simulation models have been proposed to predict autogenous shrinkage of cementitious systems. In most of these models, however, only the elastic deformation caused by self-desiccation of the hydrating cement paste is considered. In fact, cement paste is not an ideal elastic material. Also the time-dependent deformation, i.e. creep, has been proposed an important component of autogenous shrinkage, especially at the early age. In this study, a simulation model for autogenous deformation is proposed, which includes an elastic part and a time-dependent part. The time-dependent part of this model is based on the activation energy concept. The capillary tension is considered as the driving force of the autogenous shrinkages. In order to evaluate the accuracy of the prediction with the proposed model, CEM I and CEM III/B pastes are studied in this paper. The simulated autogenous shrinkages are compared with experimental results.
Modelling of autogenous shrinkage of hardening cement paste
Highlights A simulation model for autogenous deformation is proposed. Investigation of the role of creep on autogenous shrinkage. Experimental investigation of early age properties of cement pastes. Experimental and numerical study of the autogenous shrinkages of Portland cement paste and BFS cement paste.
Abstract In recent decades, several simulation models have been proposed to predict autogenous shrinkage of cementitious systems. In most of these models, however, only the elastic deformation caused by self-desiccation of the hydrating cement paste is considered. In fact, cement paste is not an ideal elastic material. Also the time-dependent deformation, i.e. creep, has been proposed an important component of autogenous shrinkage, especially at the early age. In this study, a simulation model for autogenous deformation is proposed, which includes an elastic part and a time-dependent part. The time-dependent part of this model is based on the activation energy concept. The capillary tension is considered as the driving force of the autogenous shrinkages. In order to evaluate the accuracy of the prediction with the proposed model, CEM I and CEM III/B pastes are studied in this paper. The simulated autogenous shrinkages are compared with experimental results.
Modelling of autogenous shrinkage of hardening cement paste
Lu, Tianshi (Autor:in) / Li, Zhenming (Autor:in) / van Breugel, Klaas (Autor:in)
21.08.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Numerical Modelling of Autogenous Shrinkage of Hardening Cement Paste
| British Library Conference Proceedings | 1997
Numerical Modelling of Autogenous Shrinkage of Hardening Cement Paste
| Online Contents | 1997
Numerical Modelling of Autogenous Shrinkage of Hardening Cement Paste
| British Library Online Contents | 1997
Modelling autogenous shrinkage of hydrating cement paste
| British Library Conference Proceedings | 2008