Optimizing supplementary cementitious material replacement to minimize the environmental impacts of concrete
Optimizing supplementary cementitious material replacement to minimize the environmental impacts of concrete
复制标题
优化辅助胶凝材料的替代,以尽量减少混凝土对环境的影响
DOI:
10.1016/j.cemconcomp.2023.105049
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发表时间:
2023
影响因子:
10.5
通讯作者:
Miller, Sabbie A.
中科院分区:
文献类型:
--
作者:
Knight, Kelli A.;Cunningham, Patrick R.;Miller, Sabbie A.
With growing environmental consequences from material consumption, there is increased urgency to decarbonize the production of materials we consume frequently, including concrete. It is common to use supplementary cementitious materials (SCMs) to limit the clinker content of Portland cement and reduce greenhouse gas (GHG) emissions in concrete production. However, over-utilization of SCMs can degrade material performance and increase other environmental impacts. Here we derive quantitative methods to determine the optimal SCM to Ordinary Portland Cement (OPC) ratio (s/c) for 7 different SCMs to minimize 11 environmental impact categories while maintaining compressive strength. We find that optimal replacement levels are heavily dependent on the SCM. Notably, lower s/c in many cases lowered emissions (e.g., s/c of 0.17 kg/kg for limestone leads to ∼1.6x lower GHG emissions than a s/c of 0.42 kg/kg in 30 MPa concrete). This work demonstrates a systematic means to effectively utilize limited SCM resources to mitigate environmental impacts from concrete production.
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影响因子:
7.4
作者:
Meddah, Mohammed Seddik;Ismail, Mohamed A.;Fitriani, Heni
通讯作者:
Fitriani, Heni
影响因子:
7.4
作者:
Quddus Tushar;M. Bhuiyan;Guomin Zhang;T. Maqsood;Tamina Tasmin
通讯作者:
Tamina Tasmin
影响因子:
7.4
作者:
Meddah, Mohammed Seddik
通讯作者:
Meddah, Mohammed Seddik
影响因子:
5
作者:
R. Heard;C. Hendrickson;F. McMichael
通讯作者:
F. McMichael