Department of Architecture and Architectural Engineering, Yonsei University, Seoul 03722, Republic of Korea.
School of Architecture, Soongsil University, Seoul 06978, Republic of Korea.
J Hazard Mater. 2019 Jul 5;373:844-855. doi: 10.1016/j.jhazmat.2019.03.079. Epub 2019 Mar 20.
Biochar and red clay were used to develop eco-friendly building materials with improved thermal and mechanical performance. Rice husk, coconut shell, and bamboo were prepared by thermally decomposing as biochar. Thermal conductivity measurements, scanning electron microscopy imaging, compressive strength measurements, and an infrared heat transfer experiment were performed, and the results showed that the mixture of biochar tends to lower the thermal conductivity. The compressive strength of specimens mixed with rice husk decreased, but that of specimens mixed with coconut shell and bamboo tended to increase. The infrared heat transfer test showed that the thermal performance of the mixed rice husk specimens was significant, while the specimen mixed with coconut shell and bamboo showed thermal performance improvement. A comprehensive evaluation of the improvement in thermal performance and strength indicated that a 10 wt.% mixture of bamboo was the most effective. Therefore, it was possible to effectively determine the type and weight ratio of biochar to red clay binder an important step in the study of biochar and red clay building materials.
生物炭和红黏土被用于开发具有改善的热学和力学性能的环保建筑材料。稻壳、椰子壳和竹子被热解制成生物炭。进行了热导率测量、扫描电子显微镜成像、抗压强度测量和红外传热实验，结果表明生物炭的混合物倾向于降低热导率。混合稻壳的试件的抗压强度降低，但混合椰子壳和竹子的试件的抗压强度趋于增加。红外传热测试表明，混合稻壳试件的热性能显著，而混合椰子壳和竹子的试件表现出热性能的改善。对热性能和强度的改善进行综合评估表明，10wt.%的竹子混合物最为有效。因此，可以有效地确定生物炭和红黏土建筑材料研究中生物炭和红黏土结合剂的类型和重量比，这是一个重要步骤。
