爐石飛灰複合型鹼激發材料高溫工程性質

Engineering Properties of Slag-Fly Ash Composite Alkali Activated Material at Elevated Temperatures

楊宗叡(Tzong-Ruey Yang) ； 張大鵬(Ta-Peng Chang) ； 鄭百榕(Pai-Jung Cheng) ； 吳宗翰(Tsung-Han Wu)

《中國土木水利工程學刊》 26卷3期 (2014/09) Pp. 205-210

https://doi.org/10.6652/JoCICHE.201409_26(3).0003

摘要

本研究係於固定水玻璃模數下，藉由改變爐石飛灰比例、鹼激發量、水固比、含砂量等材料參數，探討各參數組合變化對於複合型鹼激發材料於高溫煅燒後性質之影響。由結果顯示：（1）添加飛灰會輕微增加其熱傳導係數。（2）添加飛灰會使高溫燒後之強度提升，於煅燒400℃後，其強度可提升40%～60%。（3）由微觀試驗結果顯示，添加飛灰於常溫時可見許多飛灰顆粒，但於高溫環境下因飛灰燒結反應而使結構更緻密，進而有提升強度之效果。

關鍵字

鹼激發 ； 高溫 ； 爐石 ； 飛灰

並列摘要

This study investigates the effect of exposure to various elevated temperatures on the engineering properties of composite alkali activated material manufactured by different dosages of activator, water-solid ratios, amounts of sand and proportions of slag-fly as mixtures. The experimental results show that: (1) The addition of fly ash only causes a slight increase of thermal conductivity. (2) The addition of fly ash can significantly increase the strength of specimen with increase of 40~60% when after exposure to 400℃ temperature. (3) The result of microscopic tests indicate that it has large number of unreactive fly ash particles at room temperature, but the microstructure of alkali activated material becomes denser to enhance the strength of the material exposed to elevated temperature.

並列關鍵字

alkali activated ； elevated temperatures ； slag ； fly ash