臺灣博碩士論文加值系統

碳化矽（SiC）研磨污泥主要為機械研磨加工業，進行研磨與拋光加工後所衍生之廢棄物，若未妥善處理恐對生態環境造成危害。為評估以碳化矽研磨污泥替代水泥製成水泥砂漿之可行性，本研究首先進行碳化矽污泥之物理及化學基本特性分析，並藉由田口實驗設計法歸納碳化矽污泥製成水泥砂漿之最適化參數配比，再以耐久實驗瞭解其工程適用途徑。
研究結果顯示，碳化矽污泥粒徑細（主要範圍45~75 μm）、矽含量高、含水率低且卜作嵐活性指數達82%，適合替代水泥製作水泥砂漿。田口實驗設計法之最適化參數配比實驗結果顯示，添加碳化矽污泥替代水泥，所製成水泥砂漿之流動度與污泥摻配量成正比，抗壓強度則成反比；歸納最適參數配比為骨膠比：2.5、水膠比：0.52、碳化矽污泥摻配比：15 wt.%及水養護，製成水泥砂漿之流動度適中為113%，且於7天養護後抗壓強度達 24.01 MPa。
耐久性實驗結果顯示，以碳化矽研磨污泥替代水泥對於製成水泥砂漿之吸水率及乾縮性質並無明顯幫助；摻配15 wt.%碳化矽污泥對於製成水泥砂漿之硫酸鹽抗性有明顯成效，浸泡硫酸鈉溶液15週後，長度變化率僅為0.019%，顯示添加適當比例碳化矽污泥製成水泥砂漿之硫酸鹽抗性穩定，不易遭受侵蝕造成試體膨脹。綜合上述，以碳化矽研磨污泥替代部分水泥具有技術可行性，有利於降低環境污染並提升循環再利用效益。

Silicon Carbide (SiC) grinding sludge is mainly used in mechanical grinding and processing industries. The wastes derived from grinding and polishing processing may cause harm to the ecological environment if not properly disposed of. In order to evaluate the feasibility of replacing cement with SiC sludge to make cement mortar, the physical and chemical properties of SiC sludge were first confirmed the optimal parameter ratio was summarized by Taguchi experimental design method, and then the engineering application method was understood by durability experiment.
The results show that the SiC sludge has fine particle size (mainly in the range of 45-75 μm), high Si content, low moisture content and Pozzolanic Activity Index of 82%, which is suitable for replacing cement to make cement mortar. Subsequently, the Taguchi experimental design method was used to conclude that the optimal parameter ratio in cement morter was Fine aggregate-to-binder ratio: 2.5, Water-to-binder ratio: 0.52, SiC sludge mixing ratio: 15 wt.% and water curing; its fluidity is moderate at 113%, and the compressive strength reaches 24.01 MPa after 7 days of curing.
The results of the optimal parameter ratio experiment show that adding SiC sludge to replace cement, the fluidity of cement mortar is proportional to the amount of sludge mixed, and its compressive strength is inversely proportional. The SiC sludge did not significantly improve the water absorption and drying shrinkage properties. The sulfate resistance was obviously effective by mixing 15 wt.% of SiC sludge. After soaking in sodium sulfate solution for 15 weeks, the length change rate was only 0.019%.Results revealed that the sulfate resistance is stable after adding an appropriate ratio of SiC sludge, and it won’t be corroded and easily causing the expansion of the cement mortar. Based on the above, it is technically feasible to replace part of cement with SiC grinding sludge, which is conducive to reducing environmental pollution and improving recycling efficiency.

摘要 i
Abstract ii
致謝 iv
目錄 v
圖目錄 viii
表目錄 x
第一章 前言 1
1.1研究動機 1
1.2研究目的 2
第二章 文獻回顧 3
2.1無機污泥處理現況 3
2.2碳化矽之特性及應用 6
2.2.1碳化矽之特性 6
2.2.2碳化矽之應用 8
2.3研磨污泥與資源化發展 12
2.4水泥與卜作嵐材料 16
2.4.1卜特蘭水泥與水化反應 16
2.4.2卜作嵐材料 19
2.5混凝土強度之影響因素 24
第三章 研究設計與方法 27
3.1研究流程 27
3.2實驗材料與設備 29
3.3田口實驗設計法 31
3.3.1控制因子及水準值 31
3.3.2田口直交表L9（34）設計 32
3.3.3田口方法分析 34
3.4試體製作與養護 36
3.5實驗分析方法 37
3.5.1污泥基本分析 37
3.5.2新拌性質 40
3.5.3硬固性質 40
3.5.4耐久性質 42
3.5.5微觀性質 43
第四章 結果與討論 44
4.1碳化矽研磨污泥基本分析 44
4.1.1粒徑分析 44
4.1.2三成份分析 45
4.1.3化學組成分析 46
4.1.4卜作嵐活性指數分析 50
4.2田口法實驗結果分析 52
4.2.1新拌性質分析 52
4.2.2硬固性質分析 55
4.2.3吸水率分析 59
4.3耐久性質分析 62
4.3.1乾縮性質分析 62
4.3.2抗硫酸鹽分析 65
4.4微觀性質分析 70
第五章 結論與建議 77
5.1結論 77
5.2建議 79
第六章 參考文獻 80

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