Evaluation of Effective Elastic Properties for Wood–Cement Composites: Experimental and Computational Investigations

Jean Gérard Ndong Engone, Ahmed El Moumen, Chafika Djelal, Abdellatif Imad, Toufik Kanit and Jonathan Page
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Jean Gérard Ndong Engone: Univ. Artois, IMT Nord Europe, Junia, Univ. Lille, ULR 4515, Laboratoire de Génie Civil et Géo-Environnement (LGCgE), F-62400 Béthune, France
Ahmed El Moumen: Univ. Lille, ULR 7512, Unité de Mécanique de Lille Joseph Boussinesq (UML), F-59000 Lille, France
Chafika Djelal: Univ. Artois, IMT Nord Europe, Junia, Univ. Lille, ULR 4515, Laboratoire de Génie Civil et Géo-Environnement (LGCgE), F-62400 Béthune, France
Abdellatif Imad: Univ. Lille, ULR 7512, Unité de Mécanique de Lille Joseph Boussinesq (UML), F-59000 Lille, France
Toufik Kanit: Univ. Lille, ULR 7512, Unité de Mécanique de Lille Joseph Boussinesq (UML), F-59000 Lille, France
Jonathan Page: Univ. Artois, IMT Nord Europe, Junia, Univ. Lille, ULR 4515, Laboratoire de Génie Civil et Géo-Environnement (LGCgE), F-62400 Béthune, France

Sustainability, 2022, vol. 14, issue 14, 1-17

Abstract: In this work, wood–cement composites (WCC) based on poplar sawdust were developed and fabricated by the extrusion process. The volume fraction of wood particles in the mixes was varied from 23% to 46%. The mechanical properties of these WCC were characterized in compression to determine the maximum compressive strength and the Young’s modulus. In the second part, these Young’s modulus values were estimated in compression using a 3D numerical homogenization which takes into account the variability in wood particle lengths and the random distribution in the mixes. The obtained results show a good agreement between the experimental data and numerical calculations up to a 35% volume fraction. The model’s poor estimation for large volume fractions (over 35%) could be attributed to the experimental sample size, which is not representative for large volume fractions, the percolation of the wood particles into the mixes and the inhibition of the cement setting.

Keywords: wood–cement composites; effective elastic properties; numerical homogenization; mechanical properties (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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