Print Email Facebook Twitter Microstructure-based prediction of the elastic behaviour of hydrating cement pastes Title Microstructure-based prediction of the elastic behaviour of hydrating cement pastes Author Mazaheripour, Hadi (Universidade do Porto) Faria, Rui (Universidade do Porto) Ye, G. (TU Delft Materials and Environment) Schlangen, E. (TU Delft Materials and Environment) Granja, José (University of Minho) Azenha, Miguel (University of Minho) Date 2018-03-15 Abstract The development of the elastic properties of a hardening cement paste results from the microstructural evolution due to cement hydration. The elastic behaviour of cement paste can be predicted by a combination of the hydration model and micromechanical analysis, which originates from a microstructural representative volume where the elastic behaviour of different hydrating cement products can be recognised. In this paper, the formation of the microstructural volume is simulated with the computational code HYMOSTRUC3D for cement hydration. The obtained microstructure is an input for a micromechanical modelling. A 3D regular lattice model is proposed to predict the elastic modulus of the microstructure, considering a water-to-cement (w/c) ratio within the range [0.30-0.50]. In addition, the Finite Element Method (FEM) is used to compare and validate the results from the lattice model. Predictions from these two modelling approaches are then compared to the experimental results provided by the EMM-ARM (Elasticity Modulus Measurement through Ambient Response Method) testing technique, the latter allowing measurement of the elastic modulus of hydrating cement pastes. Finally, the above-referred numerical models are used to evaluate the influence of the following features: the particle size distribution of the cement grains, the microstructure discretisation refinement and the elastic modulus of the C-S-H cement hydration product. Subject Elastic behaviourFEMHYMOSTRUC3DLatticePaste microstructure To reference this document use: http://resolver.tudelft.nl/uuid:f60255df-ad9b-4db0-80bc-7a16ed89c390 DOI https://doi.org/10.3390/app8030442 Source Applied Sciences, 8 (3) Part of collection Institutional Repository Document type journal article Rights © 2018 Hadi Mazaheripour, Rui Faria, G. Ye, E. Schlangen, José Granja, Miguel Azenha Files PDF applsci_08_00442.pdf 7.61 MB Close viewer /islandora/object/uuid:f60255df-ad9b-4db0-80bc-7a16ed89c390/datastream/OBJ/view