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Mechanism of long-term capillary water uptake in cementitious materials

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Abstract
Capillary imbibition or water uptake tests are practical and they satisfactorily describe the performance of cementitious materials. Most of these tests are performed for a short period (<1 week), however, additional water uptake has been documented after the water front has covered the total height of samples. This process occurs at a very low rate and it could provide further information about the pore structure. We investigated long-term capillary imbibition in mortar and concrete with and without supplementary cementitious materials. This paper reports our results and results from literature, and proposes a phenomenological description of the process. The trends observed from long-term tests are consistent across different water to cementitious material ratios, binder types, fine and coarse aggregates, curing ages, and conditioning regimes. Long-term measurements reveal primary and secondary periods of capillary imbibition that are well described by a bi-linear relationship with the fourth root of time.
Keywords
General Materials Science, Building and Construction, Capillary water uptake, Imbibition, Long-term, Transport properties, ANOMALOUS DIFFUSION, TRANSPORT, MORTARS, SORPTIVITY, MODEL, ABSORPTION, IMBIBITION, CONCRETE, FLOW

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MLA
Alderete, Natalia Mariel, et al. “Mechanism of Long-Term Capillary Water Uptake in Cementitious Materials.” CEMENT AND CONCRETE COMPOSITES, vol. 106, 2020, doi:10.1016/j.cemconcomp.2019.103448.
APA
Alderete, N. M., Villagrán Zaccardi, Y. A., & De Belie, N. (2020). Mechanism of long-term capillary water uptake in cementitious materials. CEMENT AND CONCRETE COMPOSITES, 106. https://doi.org/10.1016/j.cemconcomp.2019.103448
Chicago author-date
Alderete, Natalia Mariel, Yury Andres Villagrán Zaccardi, and Nele De Belie. 2020. “Mechanism of Long-Term Capillary Water Uptake in Cementitious Materials.” CEMENT AND CONCRETE COMPOSITES 106. https://doi.org/10.1016/j.cemconcomp.2019.103448.
Chicago author-date (all authors)
Alderete, Natalia Mariel, Yury Andres Villagrán Zaccardi, and Nele De Belie. 2020. “Mechanism of Long-Term Capillary Water Uptake in Cementitious Materials.” CEMENT AND CONCRETE COMPOSITES 106. doi:10.1016/j.cemconcomp.2019.103448.
Vancouver
1.
Alderete NM, Villagrán Zaccardi YA, De Belie N. Mechanism of long-term capillary water uptake in cementitious materials. CEMENT AND CONCRETE COMPOSITES. 2020;106.
IEEE
[1]
N. M. Alderete, Y. A. Villagrán Zaccardi, and N. De Belie, “Mechanism of long-term capillary water uptake in cementitious materials,” CEMENT AND CONCRETE COMPOSITES, vol. 106, 2020.
@article{8645582,
  abstract     = {Capillary imbibition or water uptake tests are practical and they satisfactorily describe the performance of cementitious materials. Most of these tests are performed for a short period (<1 week), however, additional water uptake has been documented after the water front has covered the total height of samples. This process occurs at a very low rate and it could provide further information about the pore structure. We investigated long-term capillary imbibition in mortar and concrete with and without supplementary cementitious materials. This paper reports our results and results from literature, and proposes a phenomenological description of the process. The trends observed from long-term tests are consistent across different water to cementitious material ratios, binder types, fine and coarse aggregates, curing ages, and conditioning regimes. Long-term measurements reveal primary and secondary periods of capillary imbibition that are well described by a bi-linear relationship with the fourth root of time.},
  articleno    = {103448},
  author       = {Alderete, Natalia Mariel and Villagrán Zaccardi, Yury Andres and De Belie, Nele},
  issn         = {0958-9465},
  journal      = {CEMENT AND CONCRETE COMPOSITES},
  keywords     = {General Materials Science,Building and Construction,Capillary water uptake,Imbibition,Long-term,Transport properties,ANOMALOUS DIFFUSION,TRANSPORT,MORTARS,SORPTIVITY,MODEL,ABSORPTION,IMBIBITION,CONCRETE,FLOW},
  language     = {eng},
  pages        = {10},
  title        = {Mechanism of long-term capillary water uptake in cementitious materials},
  url          = {http://dx.doi.org/10.1016/j.cemconcomp.2019.103448},
  volume       = {106},
  year         = {2020},
}

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