Mechanical and acoustical behavior of starch-hemp bio-composite materials

Author(s): A.T. Le, A. Gacoin, A.Li, T.H. Mai, N. El Wakil
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: 437-444
Total Pages: 8
Language : English

Abstract: The starch-hemp is a bio-composite materials and it consisted of starch binder and hemp shives. This bio-composite material is a new durable material for construction and building. In this work, the study on mechanical and acoustical behavior of the starch-hemp bio-composite materials was carried out. The starch-hemp bio-composite materials specimens with three Hemp/Starch ratios (H/S=6, 8 and 10), were manufactured by using the optimal binder and the hemp shives mixtures (0-5 mm+0-15 mm and 0-5 mm+0-20 mm). Influence of the H/S ratio and hemp shives size on density, ultimate compressive stress, tensile strength, elasticity modulus and Poisson's ratio of the starch-hemp bio-composite materials was studied and analyzed. The study on acoustical behavior shows that the starch-hemp bio-composite materials are a very good sound absorber material for medium and high frequencies with a value around 0.7. The influence of the H/S ratio on the absorption coefficient is small. The results show that the starch-hemp bio- composite materials have a good mechanical and acoustical performance and can be used as building materials.

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