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RRT3: Statistical analysis of hemp concrete mechanical properties variability

Author(s): César Niyigena, Sofiane Amziane, Alaa Chateauneuf, Laurent Arnaud, Laetitia Bessette, Florence Collet, Gilles Escadeillas, Christophe Lanos, Mike Lawrence, Camille Magniont, Sandrine Marceau, Sara Pavia, Ulrike Peter, Vincent Picandet, Mohamed Sonebi, Pete Walker
Paper category: Proceedings
Book title: Proceedings of the 1st International Conference on Bio-based Building Materials
Editor(s): Sofiane Amziane and Mohammed Sonebi
e-ISBN: 978-2-35158-154-4
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 334-340
Total Pages: 7
Language : English

Abstract: The study has been carried out in the context of a working group within the RILEM Technical Commitee 236-BBM 'Bio-aggregate-based building Materials'. It focusses on statistical analysis of hemp concrete properties. The objective is to determine statistically the variability for material density, compressive strength and Young’s modulus. The considered parameters are: the testing laboratory equipment, the hemp shiv type, the batch and the specimen size. Two types of hemp shiv have been used with two batches for each one. Two specimen sizes were used: 11x22 cm and 16x32 cm. Specimens were manufactured in one laboratory in order to ensure the homogeneity of studied material. After 90 days of drying under the same conditions, they were transported to ten different laboratories for compressive testing. A drying protocol during 48 hours was applied by all laboratories. Then, a unique protocol for compressive testing has been applied by each laboratory. Finally, data have been collected together for statistical analysis. The obtained results show an accurate repeatability for the compressive strength and the dry density; however, the Young's modulus results show a large variability.

Online publication : 2015
Publication type : full_text
Public price (Euros) : 0.00

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