Abstract
Interest in intrinsically low-energy construction materials is becoming mainstream, and bio-based materials form a key part of that group of materials. The goal of this study was to analyse the environmental impact of applying a sol-gel coating on hemp shiv, in order to improve the durability of this innovative bio-based material, using a regionalised LCA model, taking into account regional specific peculiarities. This study analysed the environmental performance of using bio-based materials in the building envelope compared with traditional synthetic construction materials, and compared the impact of a regionalised approach with a global approach. The carbon footprint of treated hemp shiv in a wall with a U-value of 0.15W/m2.K was compared to untreated hempcrete and a reference cavity wall with the same U-value. Considering the environmental damage caused by the production of hemp shiv, nitrogen fertiliser was the hotspot. The LCA results showed that, using innovative bio-based materials in construction, treated hemp shiv with sol-gel can decrease the carbon footprint of a building envelope through carbon sequestration. Using the more accurate site-specific information in life cycle inventory and impact assessment methods will result in more consistent and site-appropriate environmental results for decision-making.
| Original language | English |
|---|---|
| Article number | 2987 |
| Journal | Materials |
| Volume | 12 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 15 Sep 2019 |
Keywords
- Bio-based material
- Building envelope
- Carbon sequestration
- Hemp shiv
- Hempcrete wall
- Regionalized LCA
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Regionalised life cycle assessment of bio-based materials in construction; the case of hemp shiv treated with sol-gel coatings. / Heidari, Mohammad Davoud; Lawrence, Michael; Blanchet, Pierre; Amor, Ben.
In: Materials, Vol. 12, No. 18, 2987, 15.09.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Regionalised life cycle assessment of bio-based materials in construction; the case of hemp shiv treated with sol-gel coatings
AU - Heidari, Mohammad Davoud
AU - Lawrence, Michael
AU - Blanchet, Pierre
AU - Amor, Ben
PY - 2019/9/15
Y1 - 2019/9/15
N2 - Interest in intrinsically low-energy construction materials is becoming mainstream, and bio-based materials form a key part of that group of materials. The goal of this study was to analyse the environmental impact of applying a sol-gel coating on hemp shiv, in order to improve the durability of this innovative bio-based material, using a regionalised LCA model, taking into account regional specific peculiarities. This study analysed the environmental performance of using bio-based materials in the building envelope compared with traditional synthetic construction materials, and compared the impact of a regionalised approach with a global approach. The carbon footprint of treated hemp shiv in a wall with a U-value of 0.15W/m2.K was compared to untreated hempcrete and a reference cavity wall with the same U-value. Considering the environmental damage caused by the production of hemp shiv, nitrogen fertiliser was the hotspot. The LCA results showed that, using innovative bio-based materials in construction, treated hemp shiv with sol-gel can decrease the carbon footprint of a building envelope through carbon sequestration. Using the more accurate site-specific information in life cycle inventory and impact assessment methods will result in more consistent and site-appropriate environmental results for decision-making.
AB - Interest in intrinsically low-energy construction materials is becoming mainstream, and bio-based materials form a key part of that group of materials. The goal of this study was to analyse the environmental impact of applying a sol-gel coating on hemp shiv, in order to improve the durability of this innovative bio-based material, using a regionalised LCA model, taking into account regional specific peculiarities. This study analysed the environmental performance of using bio-based materials in the building envelope compared with traditional synthetic construction materials, and compared the impact of a regionalised approach with a global approach. The carbon footprint of treated hemp shiv in a wall with a U-value of 0.15W/m2.K was compared to untreated hempcrete and a reference cavity wall with the same U-value. Considering the environmental damage caused by the production of hemp shiv, nitrogen fertiliser was the hotspot. The LCA results showed that, using innovative bio-based materials in construction, treated hemp shiv with sol-gel can decrease the carbon footprint of a building envelope through carbon sequestration. Using the more accurate site-specific information in life cycle inventory and impact assessment methods will result in more consistent and site-appropriate environmental results for decision-making.
KW - Bio-based material
KW - Building envelope
KW - Carbon sequestration
KW - Hemp shiv
KW - Hempcrete wall
KW - Regionalized LCA
UR - http://www.scopus.com/inward/record.url?scp=85072562326&partnerID=8YFLogxK
U2 - 10.3390/ma12182987
DO - 10.3390/ma12182987
M3 - Article
VL - 12
JO - Materials
JF - Materials
SN - 1996-1944
IS - 18
M1 - 2987
ER -