Статья

Biochar as construction materials for achieving carbon neutrality

Yuying ZhangDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, ChinaMingjing HeDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, ChinaLei WangState Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, ChinaJianhua YanState Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, ChinaBin MaLaboratory for Waste Management, Nuclear Energy and Safety, Paul Scherrer Institute, 5232, Villigen, SwitzerlandXiaohong ZhuSchool of Civil Engineering, University of Leeds, West Yorkshire, Leeds, UKYong Sik OkKorea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, KoreaViktor MechtcherineInstitute of Construction Materials, Technische Universität Dresden, 01062, Dresden, GermanyDaniel C.W. TsangDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China

2022en

ABI

Аннотация

Abstract Biochar is a waste-derived material that can sequester carbon at a large scale. The development of low-carbon and sustainable biochar-enhanced construction materials has attracted extensive interest. Biochar, having a porous nature and highly functionalised surface, can provide nucleation sites for chemical reactions and exhibit compatibility with cement, asphalt, and polymer materials. This study critically reviewed the state-of-the-art biochar-enhanced construction materials, including biochar-cement composites, biochar-asphalt composites, biochar-plastic composites, etc. The efficacies and mechanisms of biochar as construction materials were articulated to improve their functional properties. This critical review highlighted the roles of biochar in cement hydration, surface functional groups of engineered biochar for promoting chemical reactions, and value-added merits of biochar-enhanced construction materials (such as humidity regulation, thermal insulation, noise reduction, air/water purification, electromagnetic shielding, and self-sensing). The major properties of biochar are correlated to the features and functionalities of biochar-enhanced construction materials. Further advances in our understanding of biochar’s roles in various composites can foster the next-generation design of carbon–neutral construction materials. Graphical Abstract

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Идентификаторы

DOI: 10.1007/s42773-022-00182-x

Цитирования и источники

Цитирований: 4Использованных источников: 0

Показатели — AkademScholar