BIOCHAR AS A CARBON SEQUESTERING CONSTRUCTION MATERIAL IN CEMENTITIOUS MORTAR

Author(s): Souradeep Gupta, Harn Wei Kua
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: 583-588
Total Pages: 6
Language : English

Abstract: Recent efforts to attain carbon negative construction practices in Singapore and other developed
countries leads to a search for construction materials that can reduce net carbon emission
associated with concrete constructions. One such material is biochar which can sequester fixed
carbon in its structure. Therefore, using biochar as a mixed-in component in cementitious
material can reduce the net greenhouse emission associated with concrete constructions. Our
study focuses on application of biochar derived from mixed-wood saw dust as a cement

replacement in mortar. Experimental findings suggest that, due to its fine particle size and micro-
filler effect, up to 4% cement replacement by biochar yielded slight improvement in compressive

strength while reducing sorptivity by about 70% after 28 days. Improvement in strength and
permeability of mortar by incorporating biochar suggest that it can be successfully deployed as a
carbon sequestering concrete construction material. Durable and strong infrastructure means
reduced vulnerability to damage and thus need for subsequent repairs over its service lifespan.
This will help contribute toward economic and environmental sustainability of buildings.

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