Author(s): L. Caldas, M. da Gloria, D. Santos, V. Andreola, M. Pepe, R. Toledo Filho
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
e-ISBN: 978-2-35158-192-6
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 519-526
Total Pages: 7
Language : English

Abstract: The growing concentration of greenhouse gases (GHGs) increases more and more the heat
trapping in the atmosphere, leading to a rise in global temperatures, also known as global
warming. For these reasons, in the last decade, in order to counteract this phenomenon, a
special effort has been made also in the construction sector by developing new sustainable
building materials and, moreover, one of the most promising solution is the possible employment
of forest waste as a raw material for the production of cement based construction systems. In
this context, the present study aims at evaluating the carbon footprint production of bio-based
cementitious composites (BBCCs) produced with three types of bio-aggregates: bamboo
particles, rice husk and wood shavings. The carbon footprint of the BBCCs was calculated using
a life cycle perspective following the guidelines of ISO 14067:2014. The biogenic carbon was
quantified based on the carbon content of the bio-based materials, considering the landfill

process in the end-of-life stage. System boundaries were established according to a cradle-to-
gate approach, based on data collection (in literature and laboratory) regarding the raw material

production, transportation and processing. The results were presented in three ways: (1) the
amount of CO2e emissions to produce 1m3 of composite (kgCO2e/m3), (2) the amount of CO2e
emissions considering the 1MPa strength of the composite (kgCO2e/m3.MPa), (3) the amount of
CO2e emissions to produce 1m3 with 1MPa strength considering the dry density of the composite
(MPa.CO2e index./Dry density). The wood shavings composite was the most carbon efficient,
while the rice husk showed to be the lowest efficient. Finally, the main criteria for a low carbon
footprint bio-based material were described in order to help designers.

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

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