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研究生:余秉宥
研究生(外文):Ping-Yu Yu
論文名稱:添加奈米改質粘土之水泥砂漿鬆弛行為
指導教授:黃忠信黃忠信引用關係
指導教授(外文):Jong-Shin Huang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:土木工程學系碩博士班
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:85
中文關鍵詞:奈米改質粘土鬆弛試驗
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摘要

  奈米改質粘土於高分子複合材料中,由於受聚合作用而剝離或插層,並均勻分散於高分子材料中,致使高分子複材之工程性質大幅改善。高分子/粘土複材中常使用之粘土為蒙脫土,蒙脫土具有易吸水膨脹之性質,故混凝土工程甚少使用此類粘土,然而改質後粘土層間則呈厭水狀態,且形成具有填塞毛細孔大小之尺寸。本研究藉由添加奈米改質粘土,並與未加入奈米改質粘土之水泥砂漿相互比較,分別進行抗壓試驗、彈性模數量測與鬆弛試驗等,主要係探求添加奈米改質粘土對混凝土材料微結構與其工程性質之影響。

  實驗結果發現,僅取代部分水泥約0.25~0.75%之少量奈米改質粘土,對提升水泥漿體工程性質即具有良好之成效。鬆弛試驗結果顯示,添加奈米改質粘土對活性能與彈性模數之變化趨勢極為相似,尤其添加約0.5%之奈米改質粘土,即能有效提升水泥砂漿之活性能,亦即添加少量奈米改質粘土,對於水泥砂漿之微結構緻密性及相關工程性質具有正面且有效之助益。
目錄

摘要..........................................................................I
致謝..........................................................................II
目錄..........................................................................V
表目錄........................................................................VIII
圖目錄........................................................................X

第一章 緒論................................................................1
1.1 前言...................................................................1
1.2 本文內容與組織.........................................................2

第二章 相關理論與文獻回顧..................................................7
2.1 水泥微觀結構...........................................................7
2.1.1 由矽酸鈣水化物所形成之層狀組織.....................................7
2.1.2 水泥微結構內之孔隙.................................................8
2.1.3 模擬水泥微結構之理論模式...........................................9
2.2 奈米改質粘土之背景與應用...............................................10
2.2.1 原始粘土之結構特性.................................................10
2.2.2 高分子/奈米黏土之理論..............................................12
2.2.3 奈米改質粘土於混凝土工程之應用.....................................13
2.3 水泥砂漿之彈性模數.....................................................15
2.3.1 彈性模數之型式.....................................................15
2.3.2 彈性模數與孔隙之關係...............................................15
2.4 擴散機制...............................................................16
2.5 應力鬆弛現象...........................................................17
2.5.1 應力鬆弛速率.......................................................18
2.5.2 水泥砂漿之乾縮與鬆弛...............................................19

第三章 彈性模數之測定......................................................32
3.1 添加奈米改質黏土之水泥砂漿製造.........................................32
3.1.1 試體製作...........................................................32
3.1.2 養護與試體表面處理.................................................34
3.2 單軸抗壓強度之測定.....................................................34
3.2.1 試驗規劃...........................................................34
3.2.2 試驗步驟...........................................................35
3.3 機器夾具之勁度.........................................................35
3.3.1 未考慮夾具變形量...................................................35
3.3.2 考慮夾具變形量.....................................................36
3.4 彈性模數之測定.........................................................37
3.4.1 試驗規劃...........................................................37
3.4.2 試驗步驟...........................................................37
3.5 結果與討論.............................................................38

第四章 壓力鬆弛試驗........................................................56
4.1 鬆弛試驗...............................................................56
4.1.1 鬆弛試驗之水泥漿體製備與養護.......................................56
4.1.2 試驗規劃...........................................................57
4.1.3 試驗步驟...........................................................58
4.2 結果與討論.............................................................59

第五章 結論................................................................81

參 考 文 獻.................................................................83
參考文獻


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