Environmental benefits of using cross-laminated timber with hempcrete insulation in buildings

Book chapter


Zahan, Anca-Elena, Katsarou, Sofia and Julien, A. 2018. Environmental benefits of using cross-laminated timber with hempcrete insulation in buildings. in: Elsharkawy, Heba, Zahiri, Sahar and Clough, Jack (ed.) International Conference for Sustainable Design of the Built Environment (SDBE 2018): Proceedings SDBE. pp. 96-107
AuthorsZahan, Anca-Elena, Katsarou, Sofia and Julien, A.
EditorsElsharkawy, Heba, Zahiri, Sahar and Clough, Jack
Abstract

The build environment, one of the largest energy consumers, is also responsible for around 40% of
CO
2
emissions in Europe. Under the threat of climate change, legislators and policy-
makers keep amending building
-
related regulations and standards to diminish
the building industry’s impact on the environment. Along with this trend
architectural practices, one of the main generators of innovation in the built environment, have been shifting towards
more sustainable designs and use of materials in construction. P
art of this endeavour is represented by the recently
increased use of cross
-laminated timber (CLT) in high
-rise buildings and the expansion of hempcrete use. Both of
these materials are becoming increasingly popular due to the benefits they offer to a sust
ainable building economy
due to their specific characteristics.
Both
CLT, made out of cross bonded hardwood panels, and hempcrete, a dried
mixture of lime and woody fibres extracted from hemp, have very low embodied energy and also locked CO
2
during
their
growth. Hempcrete has also excellent thermal properties.
However,
so far they have been considered separately
in construction. Thus
this paper investigates the environmental benefits of using them together, pondering the pros
and cons of doing so. Specifically,
it explores the
performance CLT and hempcrete together can achieve
with a
construction
technique using
a panel of CLT with hempcrete as insulation. The research method used is material
exploration and computer
modelling
with the use of
dynamic
energy
simulation.

Book titleInternational Conference for Sustainable Design of the Built Environment (SDBE 2018): Proceedings
Page range96-107
Year2018
PublisherSDBE
Publication dates
PrintSep 2018
Publication process dates
Deposited10 Dec 2018
EventSecond International Conference for Sustainable Design of the Built Environment: Research in Practice
ISBN978-1-9997971-9-5
Web address (URL)http://newton-sdbe.uk/wp-content/uploads/2018/09/SDBE2018_Conference-Proceedings-.pdf
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