不同鐵鋁比C4AxFy漿體吸附羧酸基強塑劑特性及流變性質之關係

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研究生：	廖瑋晴 Wei-Ching - Liao
論文名稱：	不同鐵鋁比C4AxFy漿體吸附羧酸基強塑劑特性及流變性質之關係 The Relationship between Rheological Behaviors of C4AxFy and Adsorption of Carboxylated Superplasticizer with Various F/A Ratios
指導教授：	陳君弢 Chun-Tao Chen
口試委員:	黃兆龍 Chao-Lung Hwang 張大鵬 none
學位類別：	碩士 Master
系所名稱：	工程學院 - 營建工程系 Department of Civil and Construction Engineering
論文出版年：	2017
畢業學年度：	105
語文別：	中文
論文頁數：	139
中文關鍵詞：	鋁鐵酸四鈣、強塑劑、鐵鋁比、吸附、流變行為
外文關鍵詞：	brownmillerite, superplasticizer, iron-aluminum ratio, adsorption, rheological behavior
相關次數：	點閱：354 下載：0
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本研究探討主要水泥成分相鋁鐵酸四鈣(C4AF)於不同鐵鋁比組成時，羧酸基強塑劑於其水化產物的吸附行為及漿體流變行為的關係。試驗過程中合成水泥主要成分相C4AF及不同鐵鋁比(F/A)之C4AxFy化合物，鐵鋁莫耳比分別為0.5、1、2、3，並利用合成之化合物製成漿體，量測漿體添加強塑劑後之吸附量及其流變行為，再經由量測漿體釋放之水化熱。研究結果發現，漿體黏度與水化熱皆隨著鐵鋁比的增加而降低，表示化合物內鋁含量越多水化反應越激烈。添加羧酸基強塑劑有效分散F/A為1、2之C4AxFy化合物。F/A為0.5時，強塑劑吸附量高，但黏度及水化熱無明顯改變。F/A為3時，水化反應慢，添加強塑劑可使漿體發生析離現象。在含有強塑劑拌合液中增加鹼離子濃度時，漿體黏度提高，可能因為強塑劑無法有效在孔隙水溶液中展開支鏈，使顆粒間的分散效果降低。

This study explores the relationship between the adsorption behavior of the carboxylated superplasticizer on C4AxFy with different F/A molar ratios and the rheological behaviors of the C4AxFy paste during the early hydration. The C4AxFy compounds with F/A ratios of 0.5, 1, 2, and 3 were synthesized and prepared for the paste. The superplasticizer adsorption, the rheological behavior, and the hydration heat of the pastes were measured. Results showed that both the viscosity and the hydration heat were reduced with the increases of the F/A ratios, suggesting that the hydration was accelerated by the high aluminum content. Carboxylated superplasticizer effectively dispersed the C4AxFy with F/A ratios of 1 and 2. When compared with the C4AF, the superplasticizer adsorption was high and the viscosity and the hydration heat were only changed slightly in those with F/A of 0.5. In pastes with F/A ratio of 3, the hydration was slow and segregation by the superplasticizer occurred. By adding alkalis in the mixing solutions, the viscosities were increased. It was likely that the side chains of the superplasticizer were compressed so the dispersion was reduced.

摘要	I
Abstract	II
誌謝	III
總目錄	IV
表目錄	VIII
圖目錄	IX
第一章	緒論	15
1  研究動機	15
2  研究目的	16
3  研究方法與流程	16
第二章	文獻回顧	18
1  水泥	18
1.1  水泥的組成	18
1.2  水泥水化行為	18
2  鋁鐵酸四鈣的組成及合成	21
2.1  C4AF的組成	21
2.2  C4AF的合成	21
3  強塑劑	22
3.1  強塑劑的成份與種類	22
3.2  強塑劑作用機理與其對鋁鐵酸四鈣之影響	24
4  漿體流變量測	25
4.1  流變與黏度之定義	25
4.2  水泥漿體流變	26
4.3  黏度量測方法	27
第三章	試驗計畫	38
1  試驗材料	38
1.1  鋁鐵酸四鈣	38
1.2  強塑劑	39
1.3  藥品	39
2  試驗變數	40
2.1  水灰比之設計	40
2.2  強塑劑之添加量	42
2.3  離子種類與濃度	42
3  強塑劑固含量測定試驗	43
4  合成試驗	43
5  比重試驗	44
6  粒徑分析	45
7  比表面積分析	45
8  黏度試驗	45
8.1  音叉式黏度儀	45
8.2  同軸式黏度儀	46
9  吸附試驗(TOC)	47
10  水化熱試驗	48
11  離子濃度試驗(ICP)	49
12  掃描式電子顯微鏡(SEM)	50
13   X光繞射分析儀(XRD)	50
14  五噸動態試驗機	51
15  其他試驗器材與儀器	51
第四章	結果分析與討論	75
1  前言	75
2  前期試驗	75
2.1  XRD成分分析	75
2.2  C4AF物理分析	76
3 羧酸基強塑劑對漿體的影響	77
3.1  黏度(同軸式黏度儀)	77
3.2  吸附行為	78
3.3  水化熱分析	78
3.4  XRD與SEM分析	79
4  拌合液裡不同離子種類及強塑劑濃度對漿體的影響	79
4.1  黏度(同軸式黏度儀)	79
4.2  吸附行為	80
4.3  水化熱分析	81
4.4  XRD與SEM分析	81
5  漿體添加離子造成漿體的影響	82
5.1  黏度(同軸式黏度儀)	82
5.2  吸附行為	83
5.3  水化熱分析	83
6 漿體黏度與吸附強塑劑之關係	83
第五章	結論與建議	127
1  結論	127
2  建議	128
參考文獻	129
附錄A 漿體析離現象(同軸式黏度儀)	132
附錄B 不同強塑劑濃度對漿體的黏度影響(音叉式黏度儀)	133
                                

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