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- W4229457592 endingPage "127758" @default.
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- W4229457592 abstract "The novelty of this study is to find out the CO2 uptake of waste concrete powder (WCP) derived from construction and demolition (C&D) waste recycling plant. The CO2 uptake of WCP was determined by the response surface methodology (RSM) considering the influence of carbonation time (t) and water-to-solid (w/s) ratio so as to realize the optimal condition to maximize the CO2 uptake via mineral carbonation of WCP. A regression model was developed and validated with experiments for the optimization of CO2 uptake. The response surface plot and analysis of variance show that increase in carbonation time increased the WCP CO2 uptake irrespective of w/s ratios. At carbonation time of 90 h and 0.4 w/s ratio, the optimum CO2 uptake was 2.81% considering the carbonation and energy efficiencies. The physio-chemical changes in WCP after carbonation were characterized together with heavy metal leaching performance. The blended cement mortar with carbonated WCP has a strength activity index of more than 75, which proves the feasibility of applying WCP as supplementary cementitious material for CO2 sequestration." @default.
- W4229457592 created "2022-05-11" @default.
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- W4229457592 date "2022-07-01" @default.
- W4229457592 modified "2023-10-14" @default.
- W4229457592 title "Response surface methodology for the optimization of CO2 uptake using waste concrete powder" @default.
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- W4229457592 doi "https://doi.org/10.1016/j.conbuildmat.2022.127758" @default.
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