以實驗設計法探討鹼性溶液組成對於飛灰基無機聚合物力學性質之影響

Effect of Composition of Alkaline Solution on Mechanical Properties of Fly Ash-Based Geopolymer Using Design of Experiment Approach

黃立遠(Li-Yuan Huang) ； 張大鵬(Ta-Peng Chang) ； 陳柏存(Bo-Tsun Chen) ； 施正元(Jeng-Ywan Shih)

《中國土木水利工程學刊》 21卷3期 (2009/09) Pp. 339-349

https://doi.org/10.6652/JoCICHE.200909_21(3).0009

摘要

無機聚合物（geopolymer）係由鹼性溶液激發對於矽鋁材料產生聚合反應後之新型膠結材料，而飛灰為富含矽鋁氧化物之工業副產品，近年相當多研究係有關飛灰基無機聚合物之材料性質。由於鹼性溶液組成影響無機聚合物之力學性質，故本研究採用L9（3^4）直交表探討不同氫氧化鈉與矽酸鈉溶液組成用量，對於飛灰基無機聚合物抗壓強度與動彈性模數之影響，ANOVA分析結果顯示在固定飛灰用量下，矽酸鈉溶液對於各齡期的抗壓強度與動彈性模數貢獻率分別為80.63-89.52與62.26-72.71%，為非常顯著因子，但過量的添加會導致無機聚合物之抗壓強度與動彈性模數下降。

關鍵字

實驗設計法 ； 鹼性溶液 ； 飛灰 ； 無機聚合物

並列摘要

Inorganic polymer (geopolymer) is a new type of cementing material which is made of the silicon and aluminum material inspired by the alkaline solution after completing the polymerization. On the other hand, the fly ash is a silicon-rich industrial by-product with aluminum oxide. In recent years, a considerable amount of study has been related to the material properties of fly ash-based inorganic polymer. Because the composition of alkaline solution affects the mechanical properties of inorganic polymer, this study uses the L9(3^4) table of orthogonal array to investigate the effects of different dosages of composition of sodium hydroxide and sodium silicate solutions on the compressive strength and dynamic elastic modulus of fly ash-based inorganic polymer. The results of ANOVA analysis show that, at a fixed amount of fly ash, the contribution percentages of sodium silicate solution to the compressive strength and dynamic elastic modulus of inorganic polymer at all ages are 80.63 to 89.52% and 62.26 to 72.71%, respectively, which in turn indicates that sodium silicate solution is a very significant factor. However, the excessive addition leads to a decrease of the compressive strength and dynamic elastic modulus of inorganic polymer.

並列關鍵字

design of experiment ； alkaline solution ； fly ash ； geopolymer