Publication detail

Damage localisation in fresh cement mortar observed via in situ (timelapse) X-ray μCT imaging

MIARKA, P. KYTÝŘ, D. KOUDELKA, P. BÍLEK, V.

Original Title

Damage localisation in fresh cement mortar observed via in situ (timelapse) X-ray μCT imaging

Type

journal article in Web of Science

Language

English

Original Abstract

This paper presents the outcome of a study focused on the evolution of internal damage in fresh cement mortar over 25 h of hardening. In situ timelapse X-ray computed micro-tomography (μXCT) imaging method was used to detect internal damage and capture its evolution in cement mortar hardening. During μXCT scans, the temperature released during the cement hydration was measured, which provided insight into the internal damage evolution with a link to a hydration temperature rise. The measured temperature during cement mortar hardening was compared with an analytical model, which showed a relatively good agreement with the experimental data. Using 20 CT scans acquired throughout the observed cement mortar hardening, it was possible to obtain a quantified characterisation of the porous space. Additionally, the use of timelapse μXCT imaging over 25 h allowed for studying the crack growth inside the meso-structure including its volume and surface characterisation. The results provide valuable insights into cement mortar shrinkage and serve as a proof-of-concept methodology for future material characterisation.

Keywords

Hydration; Portland cement; X-ray μCT; Crack; Porosity;

Authors

MIARKA, P.; KYTÝŘ, D.; KOUDELKA, P.; BÍLEK, V.

Released

26. 9. 2024

Publisher

elsevier

Location

Online

ISBN

0958-9465

Periodical

CEMENT & CONCRETE COMPOSITES

Year of study

154

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages count

13

URL

https://www.sciencedirect.com/science/article/pii/S0958946524003093

BibTex

@article{BUT189743,
  author="Petr {Miarka} and Daniel {Kytýř} and Petr {Koudelka} and Vlastimil {Bílek}",
  title="Damage localisation in fresh cement mortar observed via in situ (timelapse) X-ray μCT imaging",
  journal="CEMENT & CONCRETE COMPOSITES",
  year="2024",
  volume="154",
  number="1",
  pages="13",
  doi="10.1016/j.cemconcomp.2024.105736",
  issn="0958-9465",
  url="https://www.sciencedirect.com/science/article/pii/S0958946524003093"
}