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研究生:林昭賢
研究生(外文):Lin Jhao Sian
論文名稱:加入聚丙烯纖維之水泥漿體強度研究
論文名稱(外文):The study of strength for Polypropylene fiber mixed cement paste
指導教授:鄧建剛鄧建剛引用關係
指導教授(外文):DENG JIAN GANG
口試委員:林秀美吳烘森鄧建剛
口試委員(外文):LIN XIU MEIWU HONG SENDENG JIAN GANG
口試日期:2014-06-04
學位類別:碩士
校院名稱:明新科技大學
系所名稱:土木工程與環境資源管理系碩士班
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:2014
畢業學年度:102
語文別:中文
論文頁數:102
中文關鍵詞:微型樁聚丙烯纖維抗壓強度
外文關鍵詞:Cement pastePolypropylene FiberCompressive Strength
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本研究為探討在水泥漿體中添加不同聚丙烯纖維後對其抗壓與抗彎強度之影響。在水泥漿中加入適量的纖維加勁能增強並改善水泥漿體的力學性質,對水泥漿體抗壓與抗彎強度有顯著提高。本研究中於水泥漿試體中添加不同聚丙烯纖維比例,水泥漿抗壓試體採用5cm × 5cm × 5cm試體模製作,聚丙烯纖維含量比例分別採用0.1%、0.2%、0.3%,聚丙烯纖維長度分別採用0.6cm、1.2cm及1.9cm長度;水泥漿抗彎試體採用4cm × 4cm × 16cm以及7.5cm × 7.5cm × 30cm試體模製作,二種試體皆採用長度0.6cm、纖維容積比0.1%聚丙烯纖維,其中7.5cm × 7.5cm × 30cm試體更以現地微型樁施工為藍本,加入鋼筋以比較與聚丙烯纖維抗彎強度之差異。本試驗皆配合未添加聚丙烯纖維之水泥漿試體作為背景比較,水泥漿體之水灰比為1,原因為水泥薄漿較常使用於大地工程中之地盤改良工作,加入聚丙烯纖維之水泥漿應有助於提升漿體強度與韌性。經試驗結果,得出水泥漿混和纖維試體抗壓強度大多來自水泥,纖維僅為加勁效果。纖維含量比例增加時,水泥漿試體抗壓強度呈現減少趨勢;纖維長度增加時,相同纖維含量比例下水泥漿試體抗壓強度亦呈現減少趨勢。本研究亦提出水泥漿試體抗壓強度與水泥齡期、聚丙烯纖維長度關係之迴歸分析結果,纖維含量比例並未明顯影響試體抗壓強度,故未納入迴歸方程式中。
本研究結果為提供大地工程中用於鄰接構造物保護之微型樁,以純水泥漿施工,或以水泥漿加入聚丙烯纖維施工方式與現有之水泥漿加入鋼筋施工方式之抗彎能力提供比較,實驗顯示純水泥漿一旦開裂隨即斷裂,抗彎能力最差;加入聚丙烯纖維之水泥漿承受載中開裂後尚具有一定之韌性容量以提升斷裂強度;加入鋼筋之水泥漿則表現出最大之韌性容量,得到最理想之承載容量。

This research was aimed to study the effects of different types of polypropylene fibers compressive and flexural strengths of cement paste. It has been verified that mixed appropriate amount of fibers into cement paste may improve the properties of compressive and flexural strengths. On this study, polypropylene fibers in different proportions had been mixed into cement paste samples with dimensions of 5cm × 5cm × 5cm; whereas polypropylene fibers in proportions of 0.1%, 0.2% and 0.3%, and in lengths of 6cm,12cm and 19cm accordingly. The cement paste samples for flexural strength test were with dimensions of 4cm × 4cm × 16cm and 7.5cm × 7.5cm × 30cm, both in length of 6mm, containing of 0.1% Polypropylene fibers; whereas the test samples with dimensions of 7.5cm × 7.5cm × 30cm were even tested based on the model of Micro Pile Construction and compared in terms of flexural strength with those added with reinforcing bars. The test samples of cement paste without adding Polypropylene fibers were offered for background comparison. The the ratio of cement to water in the weight was 1:1, for the thin cement paste ratio has been widely applied for ground improvement in the field of Geotechnical Engineering. It was proven that mixing Polypropylene fibers improved the flexural strengths of cement paste samples. The test showed that the compressive strengths of the test samples made of cement paste mixed with polypropylene fibers mostly relied on the cement, whereas the fibers were just for reinforcement only. Moreover, the compressive strengths of the cement paste samples tended to decrease along with the increases of the fiber contents; while the compressive strengths of the cement paste samples with the same fiber contents decreased along with the increases of the fiber lengths. This research had also come across with the regression analysis of the compressive strengths of the cement paste test samples and concrete ages as well as the lengths of steel fibers. However, due to its insignificant test on the compressive strengths of the test samples, the ratio of steel fiber contents was excluded from the regression model.
This research had successfully demonstrated the comparisons of compressive strengths among the micro piles, usually used as protection constructions in Geotechnical Engineering, made of pure cement paste, the ones of cement paste mixed with Polypropylene fibers and the others of cement paste added with reinforcing bars. According to the test results, the test samples of pure cement paste appeared to have the least compressive strength for they simply broke down completely when starting to crack; while the ones mixed with polypropylene fibers tended to bear a certain degree of over strengths even after cracking; whereas the ones added with reinforcing bars turned out to have the most ductility with the optimal load-bearing capacity.

摘 要.................................. I
Abstract............................... II
誌 謝.................................. IV
目 錄.................................. V
表目錄.................................. VIII
圖目錄.................................. XI
第一章 緒論.............................. 1
1.1前言................................. 1
1.2 研究動機與目的 ........................2
1.3 研究方法............................. 3
第二章文獻回顧............................ 6
2.1 水泥漿體力學行為...................... 6
2.1.1 水泥之性質概述...................... 6
2.2 纖維混凝土........................... 9
2.2.1 纖維混凝土的定義.................... 9
2.2.2 纖維混凝土之演進與發展............... 11
2.2.3 纖維混凝土的分類.................... 12
2.2.4 纖維的種類......................... 12
2.2.5 纖維混凝土的優點.................... 18
2.3 聚丙烯纖維特性........................ 18
2.4 聚丙烯纖維在大地工程上的運用相關文獻...... 22
第三章實驗方法與設備....................... 23
3.1纖維水泥漿試體製作方法................... 23
3.2材料分析.............................. 24
3.3水泥漿配比設計......................... 25
3.3.1 纖維含量........................... 26
3.4 實驗設備............................. 27
3.5 聚丙烯纖維水泥漿抗壓強度試驗............. 32
3.5.1 試體拌合和澆置...................... 32
3.5.2 抗壓強度實驗 ........................37
3.6 聚丙烯纖維水泥漿抗彎強度試驗............ 41
3.6.1 試體拌合和澆置...................... 41
3.6.2 抗彎強度實驗 ........................44
3.7 水泥漿抗彎強度試驗..................... 47
3.7.1 試體拌合和澆置...................... 47
第四章 實驗數據分析....................... 56
4.1 試驗結果與數據 ........................57
4.2 試驗數據分析......................... 66
4.2.1 變異數分析......................... 66
4.2.2 實驗數據之變異數分析................. 68
4.2.3 水泥漿體纖維比例抗壓強度獨立樣本檢定.... 77
4.2.4 水泥漿體纖維長度抗壓強度獨立樣本檢定.... 83
4.2.5 實驗數據之複迴歸分析................. 89
4.2.6 水泥漿試體抗彎強度結果說明............ 93
第五章結論............................... 95
5.1 結論 ................................95
5.2 建議 ................................96
參考文獻................................. 97


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