Overview on Biobased Building Material made with plant aggregate
By S. Amziane, M. Sonebi. 2016
140 citations recorded by the source corpus.
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.
Subfields: Building and Construction, Earth-Surface Processes, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/9942938ebb5674763936fb6ecdcd801fef51b28c
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In Building and Construction
In Polymers and Plastics
Citations in the corpus
- Recommendation of the RILEM TC 236-BBM: characterisation testing of hemp shiv to determine the initial water content, water absorption, dry density, particle size distribution and thermal conductivity (2017, background): “Amongst these bio-based aggregates, hemp shiv (the woody core of the stem of the hemp plant) is probably the most widely used as alternative or ecofriendly building material in Europe and is also representative of most of the aggregate made from the stem because hemp is an annual plant (around 4 mon”