### Abstract

Cement hydration in concrete and mortar has been studied thoroughly over the past 50 years. To fully understand hydration in concrete and predict the evolution of the hygral, thermal, and mechanical properties at the structural level, one needs to studynot only the reaction kinetics but also the development of the microstructure. Many models have been developed for this purpose, some of them looking only at the micro-scale or at the macro-scale and others tackling the fundamental nature of the issue, which can be qualified as a multiscale problem. This paper proposes a novel approach that consists of combining a cement hydration model at the microstructural level, the CEMHYD3D model, with a macroscopic hygro-thermo-chemical model, the HTC model. The coupling is performed by post-processing the output of the CEMHYD3D model, in particular with reference to cement hydration degree, silica fume reaction degree, and amounts of evaporable water and chemically bound water in order to identify through a curve fitting routine the parameters of the HTC formulation. This approach allows the possibility of predicting concrete behavior at multiple scales based on the actual chemical and microstructural evolution, thus enhancing the capabilities of the so-called HTC-CEMHYD3D model. This paper focuses on 1) introducing the concepts behind the formulation of self-desiccation and 2) demonstrating the predictive capabilities of the coupled model using some available experimental data.

Original language | English (US) |
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Title of host publication | Computational Modelling of Concrete Structures - Proceedings of the conference on Computational Modelling of Concrete and Concrete Structures, EURO-C 2018 |

Editors | Bernhard Pichler, Jan G. Rots, Günther Meschke |

Publisher | CRC Press/Balkema |

Pages | 203-208 |

Number of pages | 6 |

ISBN (Print) | 9781138741171 |

DOIs | |

State | Published - Jan 1 2018 |

Event | Conference on Computational Modelling of Concrete and Concrete Structures, EURO-C 2018 - Bad Hofgastein, Austria Duration: Feb 26 2018 → Mar 1 2018 |

### Publication series

Name | Computational Modelling of Concrete Structures - Proceedings of the conference on Computational Modelling of Concrete&amp;amp;amp;amp;amp;amp;amp;nbsp;and Concrete Structures, EURO-C 2018 |
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### Conference

Conference | Conference on Computational Modelling of Concrete and Concrete Structures, EURO-C 2018 |
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Country | Austria |

City | Bad Hofgastein |

Period | 2/26/18 → 3/1/18 |

### Fingerprint

### ASJC Scopus subject areas

- Modeling and Simulation
- Civil and Structural Engineering

### Cite this

*Computational Modelling of Concrete Structures - Proceedings of the conference on Computational Modelling of Concrete and Concrete Structures, EURO-C 2018*(pp. 203-208). (Computational Modelling of Concrete Structures - Proceedings of the conference on Computational Modelling of Concrete&amp;amp;amp;amp;amp;amp;amp;nbsp;and Concrete Structures, EURO-C 2018). CRC Press/Balkema. https://doi.org/10.1201/9781315182964-25

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*Computational Modelling of Concrete Structures - Proceedings of the conference on Computational Modelling of Concrete and Concrete Structures, EURO-C 2018.*Computational Modelling of Concrete Structures - Proceedings of the conference on Computational Modelling of Concrete&amp;amp;amp;amp;amp;amp;amp;nbsp;and Concrete Structures, EURO-C 2018, CRC Press/Balkema, pp. 203-208, Conference on Computational Modelling of Concrete and Concrete Structures, EURO-C 2018, Bad Hofgastein, Austria, 2/26/18. https://doi.org/10.1201/9781315182964-25

**A multiscale framework for the prediction of concrete self-desiccation.** / Pathirage, M.; Bentz, D. P.; Di Luzio, G.; Masoero, E.; Cusatis, Gianluca.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - A multiscale framework for the prediction of concrete self-desiccation

AU - Pathirage, M.

AU - Bentz, D. P.

AU - Di Luzio, G.

AU - Masoero, E.

AU - Cusatis, Gianluca

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Cement hydration in concrete and mortar has been studied thoroughly over the past 50 years. To fully understand hydration in concrete and predict the evolution of the hygral, thermal, and mechanical properties at the structural level, one needs to studynot only the reaction kinetics but also the development of the microstructure. Many models have been developed for this purpose, some of them looking only at the micro-scale or at the macro-scale and others tackling the fundamental nature of the issue, which can be qualified as a multiscale problem. This paper proposes a novel approach that consists of combining a cement hydration model at the microstructural level, the CEMHYD3D model, with a macroscopic hygro-thermo-chemical model, the HTC model. The coupling is performed by post-processing the output of the CEMHYD3D model, in particular with reference to cement hydration degree, silica fume reaction degree, and amounts of evaporable water and chemically bound water in order to identify through a curve fitting routine the parameters of the HTC formulation. This approach allows the possibility of predicting concrete behavior at multiple scales based on the actual chemical and microstructural evolution, thus enhancing the capabilities of the so-called HTC-CEMHYD3D model. This paper focuses on 1) introducing the concepts behind the formulation of self-desiccation and 2) demonstrating the predictive capabilities of the coupled model using some available experimental data.

AB - Cement hydration in concrete and mortar has been studied thoroughly over the past 50 years. To fully understand hydration in concrete and predict the evolution of the hygral, thermal, and mechanical properties at the structural level, one needs to studynot only the reaction kinetics but also the development of the microstructure. Many models have been developed for this purpose, some of them looking only at the micro-scale or at the macro-scale and others tackling the fundamental nature of the issue, which can be qualified as a multiscale problem. This paper proposes a novel approach that consists of combining a cement hydration model at the microstructural level, the CEMHYD3D model, with a macroscopic hygro-thermo-chemical model, the HTC model. The coupling is performed by post-processing the output of the CEMHYD3D model, in particular with reference to cement hydration degree, silica fume reaction degree, and amounts of evaporable water and chemically bound water in order to identify through a curve fitting routine the parameters of the HTC formulation. This approach allows the possibility of predicting concrete behavior at multiple scales based on the actual chemical and microstructural evolution, thus enhancing the capabilities of the so-called HTC-CEMHYD3D model. This paper focuses on 1) introducing the concepts behind the formulation of self-desiccation and 2) demonstrating the predictive capabilities of the coupled model using some available experimental data.

UR - http://www.scopus.com/inward/record.url?scp=85061216393&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85061216393&partnerID=8YFLogxK

U2 - 10.1201/9781315182964-25

DO - 10.1201/9781315182964-25

M3 - Conference contribution

SN - 9781138741171

T3 - Computational Modelling of Concrete Structures - Proceedings of the conference on Computational Modelling of Concrete&amp;amp;amp;amp;amp;amp;amp;amp;nbsp;and Concrete Structures, EURO-C 2018

SP - 203

EP - 208

BT - Computational Modelling of Concrete Structures - Proceedings of the conference on Computational Modelling of Concrete and Concrete Structures, EURO-C 2018

A2 - Pichler, Bernhard

A2 - Rots, Jan G.

A2 - Meschke, Günther

PB - CRC Press/Balkema

ER -