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Drying-Induced Damages in Exposed Fresh Cement-Based Materials at Very Early-Ages (2024-08)

From Standard Casting to 3D Printing

10.1016/j.cemconres.2024.107614

 Zuo Wenqiang,  Caneda-Martínez Laura,  Keita Emmanuel, Aimedieu Patrick,  Bornert Michel,  Roussel Nicolas
Journal Article - Cement and Concrete Research, Vol. 185, No. 107614

Abstract

In this paper, we are studying the shrinkage and microstructural damages induced by drying in samples exposed to drying at very early ages. We measure for two model mortars the average and local shrinkage through microtomography images subtraction along with microstructure evolution through microtomography radiographs. Our measurements showcase the role played by the kinetics of propagation of drying-induced capillary stresses on shrinkage distribution. They moreover show the existence of two distinct types of microstructural damages in such exposed samples occurring at the onset of the sample desaturation after a period as short as a couple of hours. Our analysis allows for a first-order understanding of the scaling of the main stress, length and time scales of the problem with some material parameters such as compressibility and permeability. We finally extrapolate and discuss the consequences of the above features on standard concrete casting and on concrete 3D printing.

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2 Citations

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BibTeX 
@article{zuo_cane_keit_aime.2024.DIDiEFCBMaVEA,
  author            = "Wenqiang Zuo and Laura Caneda-Martínez and Emmanuel Keita and Patrick Aimedieu and Michel Bornert and Nicolas Roussel",
  title             = "Drying-Induced Damages in Exposed Fresh Cement-Based Materials at Very Early-Ages: From Standard Casting to 3D Printing",
  doi               = "10.1016/j.cemconres.2024.107614",
  year              = "2024",
  journal           = "Cement and Concrete Research",
  volume            = "185",
  pages             = "107614",
}
Formatted Citation

W. Zuo, L. Caneda-Martínez, E. Keita, P. Aimedieu, M. Bornert and N. Roussel, “Drying-Induced Damages in Exposed Fresh Cement-Based Materials at Very Early-Ages: From Standard Casting to 3D Printing”, Cement and Concrete Research, vol. 185, p. 107614, 2024, doi: 10.1016/j.cemconres.2024.107614.

Zuo, Wenqiang, Laura Caneda-Martínez, Emmanuel Keita, Patrick Aimedieu, Michel Bornert, and Nicolas Roussel. “Drying-Induced Damages in Exposed Fresh Cement-Based Materials at Very Early-Ages: From Standard Casting to 3D Printing”. Cement and Concrete Research 185 (2024): 107614. https://doi.org/10.1016/j.cemconres.2024.107614.