TY - JOUR
T1 - Recycling timber waste into geopolymer cement bonded wood composites
AU - Gigar, Firesenay Zerabruk
AU - Khennane, Amar
AU - Liow, Jong leng
AU - Tekle, Biruk Hailu
AU - Katoozi, Elmira
N1 - Publisher Copyright:
© 2023 The Author(s)
PY - 2023/10/12
Y1 - 2023/10/12
N2 - Addressing critical societal challenges, such as climate change, resource depletion, and environmental protection, requires sustainable management of resources. This study reports on the results of an experimental program using waste wood, including chromium copper arsenic (CCA) treated wood, to produce ambiently cured geopolymer cement bonded wood composites (WGC), and the results are very encouraging. The composite exhibited a reasonable compressive strength, which ranged between 7 and 27 MPa inversely corresponding to the amount of wood per binder ratio ranging between 0.1 and 0.4, conferring it the possibility of being used as a building material. The compressive strength of the composite with 40% wood chips showed the lowest compressive strength with values of 9.79, 7.29, and 7.92 MPa for decontaminated, CCA-treated, and non-CCA-treated wood chips, respectively. The results indicated that for all the wood per binder ratios, the use of decontaminated wood chips significantly improves the compressive, flexural, and specific strength of the composites, as well as their ductility, compared to non-decontaminated CCA-treated and non-CCA-treated wood chips. This paves the way for using wood waste in sustainability oriented product development and manufacturing.
AB - Addressing critical societal challenges, such as climate change, resource depletion, and environmental protection, requires sustainable management of resources. This study reports on the results of an experimental program using waste wood, including chromium copper arsenic (CCA) treated wood, to produce ambiently cured geopolymer cement bonded wood composites (WGC), and the results are very encouraging. The composite exhibited a reasonable compressive strength, which ranged between 7 and 27 MPa inversely corresponding to the amount of wood per binder ratio ranging between 0.1 and 0.4, conferring it the possibility of being used as a building material. The compressive strength of the composite with 40% wood chips showed the lowest compressive strength with values of 9.79, 7.29, and 7.92 MPa for decontaminated, CCA-treated, and non-CCA-treated wood chips, respectively. The results indicated that for all the wood per binder ratios, the use of decontaminated wood chips significantly improves the compressive, flexural, and specific strength of the composites, as well as their ductility, compared to non-decontaminated CCA-treated and non-CCA-treated wood chips. This paves the way for using wood waste in sustainability oriented product development and manufacturing.
KW - CCA treated wood
KW - Compressive strength
KW - Density
KW - Geopolymer cement
KW - Modulus of rupture (MOR)
KW - Sustainability
KW - Waste wood
KW - Wood-cement composites
UR - http://www.scopus.com/inward/record.url?scp=85166926612&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2023.132793
DO - 10.1016/j.conbuildmat.2023.132793
M3 - Article
AN - SCOPUS:85166926612
SN - 0950-0618
VL - 400
SP - 1
EP - 12
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 132793
ER -
