Numerical Analysis of Infiltration in One-Dimensional Unsaturated Soil–Geotextile Column

Castro, Gabriela Salim de; Siacara, Adrian Torrico; Nardelli, Allyson E.; Lenzi, L.; Futai, Marcos Massao

doi:10.1007/s10706-022-02144-3

Cited by 4 publications

(2 citation statements)

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“…Water transport in CEBs, like in all porous building materials, usually takes place under unsaturated or partially saturated conditions and it is governed by the extended Darcy law [5,6]. Thus, water diffusion depends on the hydraulic conductivity, which, in turn, strongly depends on the moisture content of the material, rendering the entire system rather complex [7]. The liquid properties, i.e., density, viscosity and surface tension, also affect the hydraulic conductivity; these change with temperature variations.…”

Section: Introductionmentioning

confidence: 99%

“…Wilson et al [15,16], on the other hand, investigated the absorption of water into composite bars consisting of two materials with different sorptivities in hydraulic contact. Their method of analysis adopted a sharp wet front model, in contrast to numerical or finite element methods, which have also been employed in the field of soil science in the analysis of water movement through layered soils [7,19]. Sharp Front (SF) models are a simplified approach of unsaturated flow theory to modelling the liquid transport in porous materials by capillarity [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Capillary absorption into CEBs and 2-layer composite building materials comprising of natural stone and CEBs

Panagiotou

Ioannou

2023

E3S Web of Conf.

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Earth-based building materials have been used since antiquity for the construction of various structures. The main drawback of these materials is their vulnerability to direct contact with liquid water, such as rising damp. To protect earthen structures from rising damp, a stone foundation was used, resulting in composite masonry. In the current study, an experimental investigation of the capillary absorption of non-stabilized CEBs produced with soils sourced from different areas of Cyprus, as well as of 2-layer composite building materials comprising of natural stone and CEBs was carried out. The tests on CEBs indicated that the use of water as the wetting liquid led to the disintegration of the specimens and consequently to non-linear response. Thus, a non-reactive liquid was used instead to measure the capillary absorption coefficient of the materials. The test results showed that the capillary absorption coefficient of CEBs varied between 140-260 gr/m2sec1/2. In the case of the composites, capillary absorption with water as the wetting liquid showed perfectly linear response, following the t1/2 law, with no disintegration of the specimens. The results showed that there are two distinct capillary absorption branches with different gradients, in line with the theory of capillary absorption into 2-layer composite materials.

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Section: Introductionmentioning

confidence: 99%