Detail publikace

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

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

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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

Vydáno

26. 9. 2024

Nakladatel

elsevier

Místo

Online

ISSN

0958-9465

Periodikum

CEMENT & CONCRETE COMPOSITES

Ročník

154

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany počet

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"
}