TY - JOUR
T1 - Economical and eco-friendly masonry mortar containing waste concrete powder as a supplementary cementitious material
AU - Ohemeng, Eric A.
AU - Ekolu, Stephen O.
AU - Quainoo, Harry
AU - Naghizadeh, Abdolhossein
N1 - Publisher Copyright:
© 2022
PY - 2022/12
Y1 - 2022/12
N2 - Research on the feasibility of using waste concrete powder (WCP) as a replacement for cement in mortar production is available in the literature. However, the WCP-mortar related studies are centered on the material characterization and the performance of the mortars. For sustainability purposes, the mortars should provide the required strength as well as the economic and environmental benefits. Hence, the aim of this study is to evaluate the properties of cement masonry mortar containing WCP, along with their economic and environmental advantages. In the experimental study, mortars were prepared by replacing ordinary Portland cement (OPC) with WCP in various fractions of 0%, 15%, 30%, 40%, 60%, 75%, and 100% by mass. The influence of WCP on the fresh and hardened properties of the mortars was examined. It was found that the strengths of the masonry mortars were reduced significantly as the quantity of WCP increased, yet mortar mixtures containing 40–75% WCP met the strength criteria for masonry mortar. Also, using WCP resulted in tremendous reductions in the cost and environmental factors of the mortars. In conclusion, the mortars provided the specified strength requirement for masonry work as well as economic and environmental gains, making them sustainable.
AB - Research on the feasibility of using waste concrete powder (WCP) as a replacement for cement in mortar production is available in the literature. However, the WCP-mortar related studies are centered on the material characterization and the performance of the mortars. For sustainability purposes, the mortars should provide the required strength as well as the economic and environmental benefits. Hence, the aim of this study is to evaluate the properties of cement masonry mortar containing WCP, along with their economic and environmental advantages. In the experimental study, mortars were prepared by replacing ordinary Portland cement (OPC) with WCP in various fractions of 0%, 15%, 30%, 40%, 60%, 75%, and 100% by mass. The influence of WCP on the fresh and hardened properties of the mortars was examined. It was found that the strengths of the masonry mortars were reduced significantly as the quantity of WCP increased, yet mortar mixtures containing 40–75% WCP met the strength criteria for masonry mortar. Also, using WCP resulted in tremendous reductions in the cost and environmental factors of the mortars. In conclusion, the mortars provided the specified strength requirement for masonry work as well as economic and environmental gains, making them sustainable.
KW - Cost-benefit analysis
KW - Environmental impact analysis
KW - Masonry mortar
KW - Sustainable
UR - http://www.scopus.com/inward/record.url?scp=85140005923&partnerID=8YFLogxK
U2 - 10.1016/j.cscm.2022.e01527
DO - 10.1016/j.cscm.2022.e01527
M3 - Article
AN - SCOPUS:85140005923
SN - 2214-5095
VL - 17
JO - Case Studies in Construction Materials
JF - Case Studies in Construction Materials
M1 - e01527
ER -