MULTICRITERIA ANALYSIS OF HEMP PARTICLES’ IMPACT ON PHYSICAL AND THERMO-MECHANICAL PERFORMANCES OF HEMP CONCRETE

Author(s): C. Niyigena, S. Amziane, A. Chateauneuf
Paper category: Proceedings
Book title: Proceedings of the 2nd International Conference
on Bio-Based Building Materials
Editor(s): Sofiane AMZIANE, Mohammed SONEBI and Karine CHARLET
ISBN:
e-ISBN: 978-2-35158-192-6
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 574-581
Total Pages: 8
Language : English

Abstract: The hemp concrete is considered as an eco-material due to its environmental assets. Its
constituents are mainly the hemp particles, binder and water to which admixtures are added
eventually. The quality of hemp particles is very sensitive to the nature of soil where it is
produced and also to its transformation process, which results in properties variability of hemp
particles. And this may be a barrier to development of hemp concrete industry. The herein study
aims to evaluate scientifically the impact of this variability on hemp concrete performances. This
study is carried out through two main steps: (1) predicting the impact of hemp particles on the
hemp concrete, (2) hemp concrete characterization. In the first step, a multicriteria analysis
(particle size distributions, etc.) highlights the significant variability of the hemp particles and
allowed to classify them into three groups. In the second step, the tests carried out on hemp
concrete resulted in low, medium and high mechanical performances as predicted. A factor close
to 10 is observed between the minimum and maximum compressive strengths. However, the
density and the thermal conductivity are of low variability. The performed analysis show that the
interaction between the hemp particles and the binder is likely to contribute to the mechanical
response.

Online publication :2017
Publication type :full_text
Public price (Euros) : 0.00