Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 235, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.117536
Keywords
Hemp; Rapeseed straw; Viscosity modifying agent; Mechanical properties; Capillarity
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In recent decades sustainability, carbon footprint and pollution have become significant issues on a globa scale. It is widely recognised that the carbon footprint of the construction industry can be reduced which has led to sustainable materials being used more and more widely to meet emissions targets. Two of these materials are hemp concrete and rapeseed-straw concrete which are bio-composites made of a bio-aggregate, water and a lime binder, in this investigation Vicat prompt natural cement (PNC). The addition of a viscosity modifying agent (VMA) is studied for its effect on the mechanical, thermal ant transport properties. It was found that the use of a VMA was very effective at countering the two biggest weaknesses of bio-based building materials as it reduced the capillarity absorption of the concrete significantly and also greatly increased the compressive strength and modulus of elasticity of the material. (C) 2019 Elsevier Ltd. All rights reserved.
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