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研究生:林昌緯
研究生(外文):Chang-wei Lin
論文名稱:添加強塑劑下石灰石水泥漿體之流變行為研究
論文名稱(外文):Rheological Behaviors of Superplasticized Limestone Cement Pastes
指導教授:陳君弢陳君弢引用關係
指導教授(外文):Chun-tao Chen
口試委員:陳君弢
口試日期:2012-07-18
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:營建工程系
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:2012
畢業學年度:100
語文別:中文
論文頁數:213
中文關鍵詞:強塑劑石灰石流變行為吸附
外文關鍵詞:SuperplasticizerLimestoneRheological behaviorAdsorption
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本研究探討石灰石水泥在添加強塑劑下之流變行為,試驗內容以音叉式黏度儀與迷你坍度錐來探討石灰石水泥漿體的黏度和坍流度隨水化時間與強塑劑劑量之關係,最後並藉由強塑劑吸附與離子濃度的變化來說明漿體的流變行為。試驗結果發現,未添加強塑劑時,添加石灰石粉末提高漿體的黏度且該黏度隨著水化時間的增加而增加;漿體的坍流度則隨著石灰石粉末取代量的增加及水化時間而降低。當使用強塑劑時,漿體的黏度隨著強塑劑劑量與石灰石粉末取代量的增加而降低並隨著水化時間增加而增加;漿體的坍流度隨著強塑劑劑量與石灰石粉末的增加而增加並隨著水化時間的增加而降低。強塑劑的吸附試驗結果說明,漿體的流變行為係受其吸附行為所影響。當石灰石取代量越高時,強塑劑的吸附量會增加,同時發現其中有吸附轉移的趨勢。當水泥用量減少時,漿體孔隙水溶液中的總離子濃度降低故造成強塑劑的吸附量增加。
This study explores the rheogoical behaviors of the cements in the presence of superplasticizers using the vibro-viscometer and the mini-slump cones. The viscosities and the mini-slumps of the cement pastes were related to the hydration time and superplasticizer dosages. The adsorption of the superplasticizers and ion concentrations in the pastes were measured to explain those changes in the rheological behaviors. Results showed that the viscosities of the plain pastes were increased by both the limestone addition and the hydration time. The mini-slumps were decreased by the limestone addition and the hydration time. In the presence of superplasticizers, the viscosities of the pastes were decreased by the limestone addition but increased with the hydration time. The mini-slumps were increased by the limestone addition but decreased with the hydration time. Results also showed that the viscosities and the mini-slumps were found associated with the adsorption, which was increased by the limestone addition. Further results showed that the increased adsorption was attributed to the decreases in the ion concentrations. With higher limestone addition, less cements were used and the limestone did not hydrate most.
摘要
Abstract
誌謝
總目錄
表目錄
圖目錄
第一章 緒論
1.1 研究動機
1.2 研究目的
1.3 研究方法與流程
第二章 文獻探討
2.1 石灰石
2.2 水泥
2.2.1 水泥的主要組成
2.2.2 水泥水化機理
2.2.3 石灰石與水泥早期水化反應
2.3 強塑劑的使用
2.3.1 強塑劑的種類
2.3.2 強塑劑作用機理
2.3.3 石灰石與強塑劑之關係
2.4 漿體流變量測
2.4.1 流變定義
2.4.2 水泥漿體流變
2.4.3 石灰石對水泥漿體流變影響
2.4.4 流變量測方法
第三章 試驗計畫
3.1 試驗材料
3.2 試驗變數
3.2.1 材料變數
3.2.2 試樣編碼說明
3.3 漿體配比設計
3.3.1 石灰石取代量計算
3.3.2 強塑劑劑量換算
3.4 混凝土配比設計
3.5 試驗原理、方法及設備
3.5.1 強塑劑固含量測定試驗
3.5.2 漿體凝結時間試驗
3.5.3 粒徑分析試驗
3.5.4 迷你坍度試驗
3.5.5 酸溶試驗
3.6 吸附試驗
3.7 離子濃度試驗 54
3.8 掃描式電子顯微鏡 59
3.9 X光繞射分析儀 61
3.10 其他試驗儀器
第四章 結果分析與討論
4.1 前言
4.2 先期試驗
4.2.1 音叉式黏度儀與同軸旋轉式黏度儀之關係比較
4.2.2 音叉式黏度儀與迷你坍度試驗之關係比較
4.2.3 影響漿體黏度的可能因素
4.3 石灰石粉末對水泥漿體之影響
4.3.1 凝結時間
4.3.2 黏度
4.3.3 迷你坍度
4.3.4 微觀結構分析
4.4 強塑劑對水泥漿體之影響
4.4.1 黏度
4.4.2 迷你坍度
4.5 強塑劑對石灰石水泥漿體之影響
4.5.1 黏度
4.5.2 迷你坍度
4.5.3 強塑劑吸附量
4.5.4 孔隙水溶液離子濃度
4.5.5 微觀結構分析
4.6 強塑劑對石灰石粉末與石膏之影響
4.6.1 黏度
4.6.2 迷你坍度
4.6.3 強塑劑吸附量
4.6.4 孔隙水溶液離子濃度
4.7 強塑劑與石灰石粉末對不同廠牌水泥漿體之影響
4.7.1 凝結時間
4.7.2 黏度
4.7.3 迷你坍度與黏度之比較
4.7.4 強塑劑吸附量
4.7.5 孔隙水溶液離子濃度
4.8 強塑劑對石灰石混凝土之流變行為
第五章 結論與建議
5.1 結論
5.2 建議
參考文獻
附錄A 不同廠牌水泥黏度量測資料
附錄B不同廠牌水泥坍流度量測資料
附錄C XRD圖譜
附錄D SEM 與EDS圖譜
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