IS HEMP LIME CONCRETE A MIX OF HEMP AND LIME?

Author(s): B. Mazhoud, M. Viel, F. Collet, A. Phelipot-Mardelé, C. Lanos, S. Prétot
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: 433-442
Total Pages: 10
Language : English

Abstract: Hemp lime concrete is a mix of hemp shiv glued in a mineral binder. Such concrete is
characterized by low thermal conductivity and interesting hygric properties. The aims of this
study realized in the frame of ISOBIO Project is to understand which is the contribution of each
component of the hemp lime concrete to the thermo-hygric properties of the mix. The study
focuses on the case of a commercial hemp shiv (Biofibat®, CAVAC France) and a lime based
binder (ThermO®, BCB). The measurement of thermal conductivity and Moisture Buffer Value
are performed on some conventional hemp lime concrete formulations. On the other hand, the
same measurements are performed on hemp shiv alone (at different density) for several grading
showing that thermal Conductivity and MBV evolves according to the density. The last
measurements are realized on samples realized with ThermO® lime matrix foamed to achieve
sufficiently low densities ranging from 500 kg/m3 to 1100 kg/m3. The comparison of results obtained on each component and on mixes for the same range of density is full of interest to evaluate occurrence of a synergetic effect, or not. The data are used to adjust a model useful for
the optimization of the mix proportioning.

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