Overview on bio-based building material made with plant aggregate

Sofiane Amziane*, Mohammed Sonebi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

84 Citations (Scopus)
8789 Downloads (Pure)

Abstract

Global warming, energy savings, and life cycle analysis issues are factors that have contributed to the rapid expansion of plant-based materials for buildings, which can be qualified as environmental-friendly, sustainable and efficient multifunctional materials. This review presents an overview on the several possibilities developed worldwide about the use of plant aggregate to design bio-based building materials. The use of crushed vegetal aggregates such as hemp (shiv), flax, coconut shells and other plants associated to mineral binder represents the most popular solution adopted in the beginning of this revolution in building materials. Vegetal aggregates are generally highly porous with a low apparent density and a complex architecture marked by a multi-scale porosity. These geometrical characteristics result in a high capacity to absorb sounds and have hygro-thermal transfer ability. This is one of the essential characteristics which differ of vegetal concrete compared to the tradition mineral-based concretes. In addition, the high flexibility of the aggregates leads to a non-fragile elasto-plastic behavior and a high deformability under stress, lack of fracturing and marked ductility with absorbance of the strains ever after having reached the maximum mechanical strength. Due to the sensitivity to moisture, the assessment of the durability of vegetal concrete constitutes one of the next scientific challenging of bio-based building materials.
Original languageEnglish
Pages (from-to)31-38
Number of pages8
JournalRilem Technical Letters
Volume1
DOIs
Publication statusPublished - 02 Jun 2016

Bibliographical note

Publisher Copyright:
© The Author(s) 2016. This article is published with open access.

Keywords

  • Bio-based building materials
  • Life cycle analysis
  • Physical properties
  • Sustainability
  • Vegetal aggregates

ASJC Scopus subject areas

  • Building and Construction
  • General Materials Science
  • General Engineering

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