A Study on Recycling of Coal Bottom Ash as the Raw Material for Geopolymer

• Main Authors: Meng-Yeh Lin, 林孟曄
• Other Authors: 鄭大偉
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/j3738x

碩士 === 國立臺北科技大學 === 材料及資源工程系所 === 94 === There are about 370,000 tons of thermal power plant bottom ash produced annually by Tai-Power Company in Taiwan. However, only few works had been done in recycling of the coal bottom ashes. The aim of this research work is using coal bottom ash as raw material to fabricate fire resistance geopolymer. The bottom ash-based geopolymers were manufactured by controlling different solution mole ratio of SiO2/Na2O and tried to compare the fire resistance and mechanical properties with standard silica sand geopolymer. Experiment at results showed that the compressive strength of the geopolymer mortar was related to solution of SiO2/Na2O mole ratio, and the lower the solution mole ratio of SiO2/Na2O, the higher is the compressive strength. On the other hand, bottom ash-based geopolymer showed excellent performance in the characteristic of fire resistance properties and potassium sulfate solution properties. Therefore, the coal bottom ash-based geopolymer have great application potential for building materials in the future.