Biochar as Cement Replacement to Enhance Concrete Composite Properties: A Review

Aan Mohammad Nusrat Aman, Anurita Selvarajoo (), Teck Leong Lau and Wei-Hsin Chen
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Aan Mohammad Nusrat Aman: Department of Civil Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia
Anurita Selvarajoo: Department of Civil Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia
Teck Leong Lau: Department of Civil Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia
Wei-Hsin Chen: Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan

Energies, 2022, vol. 15, issue 20, 1-20

Abstract: In recent years, concrete has been accessible and economical in the construction industry, resulting in high demand for its components. Cement is known for its negative impact on the environment, which has led researchers to investigate alternative supplementary materials. Recently, biochar has been proposed as a replacement to cement in small amounts, with an optimum amount of 0.08–5, resulting in increased strength and enhancement of other properties of concrete composites. The biochar production process and its components are more economical and environmentally friendly than that of cement. In this review, we focus on research highlighting the properties of biochar that aid in the enhancement of biochar mortar and concrete composite properties. We explore properties of biochar such as water absorption, as well as compressive, flexural and tensile strength. Progress has been made in research on biochar concrete composites; however, additional investigations are required with respect to its carbon-sequestering abilities and life cycle assessment for its production process.

Keywords: cement; supplementary cementitious materials; biochar; biochar concrete composites; economical; carbon sequestering (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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