Sustainable Hemp-Clay-Lime Concrete

Author(s): Rotem Haik, Isaac A. Meir and Alva Peled
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 510-517
Total Pages: 8
Language : English

Abstract: Buildings are responsible for approximately 40% of the global energy consumption and CO2 emissions. These values only include the operational energy (OE) and operational carbon (OC), but they are even greater if the embodied energy (EE) and embodied carbon (EC) are also included. In this research, sustainable building materials based on bio-aggregate made of Hemp and low energy / low carbon footprint binders were developed. The research was based on Lime-Hemp Concrete (LHC), which was already proven to be an energy efficient and environment friendly construction material and its use is rapidly increasing. However, lime, like other fired materials, has relatively high EE and EC values. This research studied the
influence of replacing the lime in LHC with alternative unfired binders in several different contents. Five alternative binders were examined (based on clay, limestone and basalt), including waste by-products of aggregate quarries, these last ones presenting additional environmental benefits. The thermal properties were investigated, aiming to obtain a good balance between thermal insulation and heat capacity, which will allow reducing the OE and OC of the building while the EE and EC of these materials are reduced as well. Physical, chemical and mechanical properties were also examined.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00