Development and performance evaluation of natural building materials with pyrolyzed agricultural by-products for carbon reduction and energy saving

Abstract Hwangtoh (Korean red clay) and Biochar were used to develop building materials for sustainable and energy-efficient buildings and propose environmentally and thermally superior materials. Rice husk, coconut shell, and bamboo were made of biochar through pyrolysis with complete oxygen limitation. The compressive strength test was carried out to analyze the thermal performance and the mechanical performance, and the thermal conductivity measurement was conducted in order to derive the physical property information for the thermal performance of the material. The microporous structure affecting the thermal conductivity and mechanical performance. Through the dynamic heat transfer experiment, the temperature changes of the biochar mixed specimens in the same heating environment were analyzed. Comprehensive considerations have shown that bamboo biochar is replaced by 10% by weight.