Assessing properties of hydrating cement paste using X-ray computed tomography characterization

H. Zhang, E. Schlangen, Zhi Ge, B. Šavija

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

Properties of concrete are, to a large extent, dependent on the properties of its binding constituent, hydrated cement paste. Therefore, knowledge of properties of hydrated cement paste is crucial for predicting concrete behaviour. This paper presents an experimentally informed approach for modelling elastic and transport properties of cement paste. The models used realistic microstructural information-obtained by X-ray computed tomography-as input for property determination. The properties were then determined using discrete numerical models, namely, models based on a lattice approach. Modelling results were compared with literature data, showing excellent correlations. Furthermore, dependence of properties of cement paste on the total porosity, based on the modelling results, was explored. Finally, a correlation between elastic and transport properties for the explored range of Portland cement pastes was established. It is seen that the models can be used for property prediction, but also for exploring correlations between different parameters.
Original languageEnglish
Title of host publication4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites
Subtitle of host publicationMicrodurability 2020
EditorsGuang Ye, Hua Dong, Jiaping Liu, Erik Schlangen, Changwen Miao
PublisherDelft University of Technology
Pages440-445
Number of pages6
ISBN (Electronic)978-94-6366-422-6
Publication statusPublished - 2021
Event4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites - Online, Delft, Netherlands
Duration: 29 Apr 202127 May 2021
Conference number: 4
https://www.microdurability2020.com/99721

Conference

Conference4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites
Abbreviated titleMicrodurability
CountryNetherlands
CityDelft
Period29/04/2127/05/21
Internet address

Keywords

  • Cement paste
  • Young’s modulus
  • Chloride diffusion
  • Lattice model
  • X-ray computed tomography

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