Carbon sequestration from waste and carbon dioxide mineralisation in concrete – A stronger, sustainable and eco-friendly solution to support circular economy

• DOI: 10.1016/j.conbuildmat.2023.131221
• Publication Date: 2023-04-05T20:57:56Z
• Authors: Rajeev Roychand; Jie Li; Shannon Kilmartin...; Mohammad Saberian; Jiasheng Zhu; Osama Youssf; Tuan Ngo
• Keywords: Circular Economy

The production of concrete is heavily reliant on the continuous mining natural resources, with majority component being aggregates which make up about 70–75% volume. As emphasis shifts towards promoting sustainability through recycling all types waste to create a closed-loop circular economy, it's vital explore alternative materials that can replace traditional raw in production. Biochar derived from different organic has shown improve strength properties concrete. However, research focussed using biochar as cement replacement material very low levels. Therefore, this focuses significantly increasing uptake pyrolysed form (wood biochar) by it fine at levels 10, 20 and 30 vol%. blended showed an improvement 63.9, 45.6% reduction 9.6% 7-day compressive results 30% levels, respectively. At 28 days, samples 20.1, 22.6, 16% Separately, 10% WBC was also cured CO2 environment for 7 days. 24.7 37.3 28-day respective curing compared control mix.