INVESTIGATION ON THE PERFORMANCE AND DURABILITY OF TREATED HEMP CONCRETE WITH WATER REPELLENT

Author(s): C. Sentenac, M. Sonebi, S. Amziane
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: 500-508
Total Pages: 9
Language : English

Abstract: Hemp concrete is an organic based building material. Hemp concrete principal weakness point
is the mechanical performance such as the compressive strength but the lack of information
concerning the durability performance of this material can also be an explanation for the
professional’s reluctance to use bio-based concrete. This study focused on the effects of
aggregate treatments, water repellent and two different binders. The mechanicals performance
such as the compressive strength at 7, 14 and 28 days were done. The results shows that with
the same density treated samples get a lower strength in compression. Then hydraulic
performance was tested with the capillarity test and highlighted the great decrease of sorption
coefficient on treated samples. Finally the durability performance tests included the full water
immersion test, and the carbonation test in accelerated chamber. Weathering results are better
for treated sample, which are less absorbent and were less destructive for specimens. Treated
samples carbonated slightly more slowly than no-treated ones.

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