Publicomos

Notice (permalien)

Réf.

43303

Type

article

Titre

Assessment of durability of bio-based earth composites

Langues

English

Auteurs

Laborel-Préneron, Aurélie / Faria, Paulina / Aubert, Jean-Emmanuel / Magniont, Camille

Date

2021

Titre de la revue

Recent Progress in Materials

Vol. & n°

v. 3 n. 2

ISSN

2689-5846

Mots-clés

earth / reinforcement / vegetal fibres / straw / durability / building materials / analysis of materials / artificial ageing tests / strength of materials

Résumé en anglais

Bio-based earth composites present various environmental benefits, such as usable wastes,coproducts, abundant or renewable materials, etc. Moreover, the incorporation of bioaggregates in the earth matrix allows the buildings to act as an effective carbon sink. Agrowing number of studies are now focusing on the mechanical and hygrothermal properties of bio-based earth building materials. However, the durability of these types ofmaterial is a major concern, and knowledge of their various aspects is essential to anticipate maintenance and sustain the performance levels. Here, the durability of compressed earthcomposites, valorizing discarded earth containing 3% of barley straw, hemp shiv, or rice husk, is investigated. Due to the lack of internationally recognized standards to assess thedurability of earthen materials and products, we proposed some testing procedures and
discussed their relevance. The addition of these three bioaggregates decreases stiffness, as estimated by ultrasound velocity, and improves the resistance to impact and erosion bywater. However, water absorption under low pressure is increased, and dry abrasion resistance is decreased. Moreover, the rice husk composite presents the best compromise.

Ressource intégrale

yes

DOI

https://doi.org/10.21926/rpm.2102016

Document joint

rpm.2102016.pdf

Licence

Creative Commons Attribution (BY)