| Title |
Evaluation of The Flame Retardant Performance of Biochar-Hwangtoh Composite Building Materials for Preventing Fire Spread |
| Authors |
Sungwoong Yang ; Young Uk Kim ; Sumin Kim |
| DOI |
https://doi.org/10.6110/KJACR.2023.35.5.235 |
| Keywords |
바이오차; 건축마감재; 친환경자재; 난연성능; 황토; 열적성능 Biochar; Building finishing materials; Eco-friendly material; Flame retardant performance; Hwangtoh; Thermal performance |
| Abstract |
The goal of this study was to develop and evaluate building finishing materials with excellent thermal and flame retardant performances using eco-friendly materials such as hwangtoh and biochar. The hwangtoh binder without biochar was found to have better thermal insulation performance than gypsum and higher heat storage than concrete. . The use of rice hull biochar was the most effective approach for weight reduction, and when 10% of the maximum weight was mixed, the density decreased by 60%. The results showed that the insulation performance could be improved by lowering the biochar mixture. Heat capacity analysis results showed a small decrease after mixing bamboo biochar; however, in most cases, it showed a higher heat storage capacity compared to concrete. Flame retardant analysis results showed that when 5% of each biochar was mixed, the total heat emission was higher than that of the hwangtoh binder, and there was a possibility of more than semi-incombustible performance; however, there was no ignition. The weight loss was up to 10.5%, and no significant change was found in the structureforming strength. |