Promoting Circular Economy of the Building Industry by the Use of Straw Bales: A Review

Author:

Li An12ORCID,Guo Chong34ORCID,Gu Jian34ORCID,Hu Yanyuan34,Luo Zhaoyang34,Yin Xunzhi5ORCID

Affiliation:

1. School of Social Sciences, Faculty of Humanities and Social Sciences, Harbin Institute of Technology, Harbin 150001, China

2. School of Management, Harbin Institute of Technology, Harbin 150001, China

3. School of Architecture and Design, Harbin Institute of Technology, Harbin 150001, China

4. Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin 150001, China

5. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China

Abstract

Over the past decade, the concept of a circular economy has increasingly gained attention as a framework for guiding businesses and policymakers. Given its significant environmental impact, the building industry plays a pivotal role in the transition toward a circular economy. To address this, our review proposes a bio-based building material, specifically straw bale, which elaborates on the circularity of bio-based buildings based on the 3R principles of a circular economy: reduce, reuse, and recycle. In terms of the “reduce” principle, straw-bale buildings can reduce construction waste, the environmental impact, energy requirements, and carbon emissions. Regarding the “reuse” principle, straw-bale buildings utilize agricultural waste resources and are easily disassembled due to their prefabrication. As for the “recycle” principle, straw-bale buildings can undergo physical, biological, and biochemical conversion processes (thermochemical conversion), yielding both wooden composite boards and potential biogas and biomass fuels for electricity and heating. This study evaluates the contribution of straw packaging construction and the use of straw as a raw material, using the 3R principles to determine future research opportunities for the construction industry to achieve a circular economy. The results of this study offer circular economy solutions and interdisciplinary research insights for researchers and practitioners interested in the building environment.

Funder

National Natural Science Foundation of China

Annual Project of Philosophy and Social Science Research Planning of Heilongjiang Province

Publisher

MDPI AG

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