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Thermomechanical characterization and modelling of sodium silicate impregnated hemp concrete

Year: 2026

Type: article

Abstract: Hemp concrete is a sustainable bio-based material whose low mechanical strength limits its use in construction applications. This study aims to enhance its performance through impregnation with sodium silicate solutions at various concentrations. The results demonstrate a significant improvement in mechanical properties and moisture buffering capacity, while preserving thermal performance. At an optimal concentration of 85%, compressive strength increases by 143%, elastic modulus by 368% and moisture buffering capacity by 44.7%. Furthermore, a finite element model complements the experimental approach and shows good agreement with the measured mechanical properties. Numerical results indicate that the Implicit scheme in Abaqus provides more accurate predictions (1–3% deviation) than the Explicit scheme (11–18% deviation). These findings confirm the potential of sodium silicate-treated hemp concrete for applications in non-load-bearing elements, prefabricated panels and sustainable insulation systems.

Source: Construction and Building Materials

DOI: 10.1016/j.conbuildmat.2026.146436

Authors: Yasmine Baa, Rabah Djedjig, Dang Mao Nguyen, Mourad Rahim, Mourad Khelifa

Institutions: Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Laboratoire d'Etudes et de Recherche sur le Matériau Bois, Université de Lorraine

Language: English

Topic: Hygrothermal properties of building materials

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,540

OpenAlex ID: W7155165160

FWCI:

Cites: 19

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