| 研究生: |
張瑜文 Chang, Yu-wen |
|---|---|
| 論文名稱: |
水庫淤泥應用於無機聚合膠結材 Reservoir sludge utilized as a geopolymeric material |
| 指導教授: |
黃忠信
Huang, Jong-Shin |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 123 |
| 中文關鍵詞: | 高強度 、環保型材料 、無機聚合 、廢棄物再回收 、水庫淤泥 |
| 外文關鍵詞: | reservoir sludge, green material, high compressive strength, geopolymer |
| 相關次數: | 點閱:127 下載:4 |
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波特蘭水泥為土木建築工程不可或缺之膠結材料,但其生產過程因須消耗大量能源,所以,對環境生態所造成之衝擊相當大。無機聚合膠結材為近年土木界熱門研究之環保材料,其特色為製造耗能小、低污染且具高強度,但受限於原料價格昂貴,至今仍無法普及應用於土木建築工程上。台灣本島之水庫淤泥含有大量鋁矽酸鹽礦物,本研究將利用此化學特性,探討水庫淤泥應用於無機聚合膠結材之可行性,除提供水庫淤泥另一再生資源化之途徑外,亦能降低無機聚合膠結材之成本。
本研究採用阿公店水庫淤泥,分析其化學成分後,仿照高嶺土之製程,以煅燒方式提升水庫淤泥之活性,進而取代高嶺土成為無機聚合膠結材之原料,藉由改變配比、水膠比、養護溫度、攪拌時間、水庫淤泥細度等控制因素,比較水庫淤泥取代前後無機聚合膠結材之強度變化。試驗結果顯示,於850 環境下持溫6小時後所得之煅燒阿公店水庫淤泥,較未煅燒時具有較高之活性,而且若以此溫度煅燒後之阿公店水庫淤泥,完全取代高嶺土所製成之無機聚合膠結材,其齡期28天時最佳抗壓強度可達956 kgf/cm2,而齡期91天之抗壓強度更高達1348 kgf/cm2。上述試驗結果證明,台灣本島水庫淤泥於無機聚合膠結材之應用上,具有相當潛力與發展空間。
Portland cement used as a bonding material is essential and important in construction and building engineering. However, high energy consumption in producing Portland cement causes some considerable ecological impacts. Inorganic geopolymeric material made at low temperatures is low energy-consumption, low ecological impact and high compressive strength and thus can be treated as a green material. But, inorganic geopolymeric materials are expensive and limits their application. In Taiwan, reservoir sludge is composed of lots of aluminum-silicates, which is the primary chemical compound of inorganic geopolymeric materials. In the study, the feasibility of using reservoir sludge as an inorganic geopolymeric material is investigated.
At first, the chemical constituents of A-kung-tien reservoir sludge are characterized. Then, the A-kung-tien reservoir sludge is calcined at different temperatures to enhance its chemical activity. Next, the calcined A-kung-tien reservoir sludge partially replaces the expensive calcined metakaolin which is typically used as a geopolymeric material. Some factors including mix proportion, water-cement ratio, curing temperature, stirring time, and fineness of reservoir sludge are taken into account in determining the maximum compressive strength of the geopolymeric material. Experimental results indicate that the optimum calcination temperature of A-kung-tien reservoir sludge is 850 for lasting six hours. When calcined reservoir sludge is used as a geopolymeric material, its maximum 28-day and 91-day compressive strengths are 956kgf/cm2 and 1348kgf/cm2, respectively. Consequently, reservoir sludge used as a geopolymeric material is promising and preferred when construction cost and compressive strength are concerned.
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