高爐石高韌性纖維混凝土（ECC）之開發與自癒合研究

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姓名

洪暄惠(Hsuan-Hui Hung) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

高爐石高韌性纖維混凝土（ECC）之開發與自癒合研究

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摘要(中)

本研究探討高爐石粉之含量對於高韌性纖維混凝土（Engineered
Cementitious Composites，ECC）力學性質之影響，包括壓力、拉力及撓曲性質。結果顯示，使用高爐石粉取代飛灰能提高 ECC 的抗壓強
度，且依然能保有應變硬化與多重開裂的特性，於齡期 28 天時，抗
壓強度可達 75MPa，最大拉應變均能超過 1%。將高爐石粉含量提高，
抗壓強度、最大拉應力與極限撓曲應力會有些微下降的趨勢，但仍高
於使用飛灰的 ECC。
　　最後，探討高爐石 ECC 之自癒合能力，以拉力試驗、表面裂縫
寬度觀測及掃描式電子顯微鏡（Scanning Electron Microscope，SEM）觀察並比較受到不同程度之破壞（預拉應變 0.5%及 1.0%）後，置入三種環境中（自來水環境、硫酸鹽環境及人工海水環境）28 天的自癒合程度。結果顯示，不論於自來水環境或是惡劣環境下之試體均有自癒合行為發生。

摘要(英)

The objectives of this research discussed the influence on mechanical properties of Engineered Cementitious Composites (ECC) using slag. Including pressure, tensile and flexural properties. The results show that using slag can improve the ECC compressive strength, and retain characteristic of strain hardening and multiple cracking. Age of 28 days, the compressive strength is up to 75MPa, the maximum tensile strain can exceed 1%. When slag content increased, compressive strength, maximum tensile stress and ultimate flexural stress will be slight decline, but still higher than fly ash ECC.
Finally, the investigation into the self-healing capacities of ECC specimens. In tensile test, surface crack width observation and scanning electron microscope (SEM) to observe and compare the degree of selfhealing with two different degrees of pre-crack (0.5% and 1.0%) and three different storage environments (water, sulfate solution and substitute ocean water). The results show, specimens has self-healing behavior regardless of storage in the water or under the harsh environment.

關鍵字(中)

★ 高韌性纖維混凝土
★ 自癒合

關鍵字(英)

★ ECC
★ self-healing

論文目次

摘要.....i
Abstract.....ii
誌謝.....iii
目錄.....iv
圖目錄.....vii
表目錄.....xiii
第一章緒論.....1
1.1研究動機.....1
1.2研究目的.....2
1.3研究方法.....2
第二章文獻回顧.....3
2.1高韌性纖維混凝土.....3
2.2使用高爐石粉於高韌性纖維混凝土.....4
2.3混凝土的自癒合能力.....6
2.4不同環境中的混凝土.....18
2.4.1硫酸鹽環境.....18
2.4.2氯離子環境.....22
第三章實驗規劃.....23
3.1實驗材料.....24
3.2試體製作.....27
3.2.1配比.....27
3.2.2拌合程序.....28
3.2.3試體灌製與養護.....28
3.3力學性能試驗.....29
3.3.1壓力試驗.....29
3.3.2拉力試驗.....29
3.3.3四點彎矩試驗.....31
3.4自癒合能力試驗.....31
3.4.1預拉及拉力試驗.....32
3.4.2試體表面觀察.....33
3.4.3材料分析試驗.....35
3.4.4環境設置.....37
第四章實驗結果與討論.....39
4.1不同配比之力學性質比較.....39
4.1.1抗壓試驗.....39
4.1.2抗拉試驗.....40
4.1.3四點彎曲試驗.....42
4.2不同配比之自癒合結果.....43
4.2.1不同環境下各配比之裂縫自癒合結果.....45
4.2.2自癒合前後表面裂縫變化觀察.....57
4.2.3自癒合後拉力性質恢復結果.....69
4.2.4自癒合後以掃描式電子顯微鏡觀察.....83
第五章結論與建議.....90
參考文獻.....94
附錄.....97

參考文獻

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指導教授

洪崇展、張瑞宏

審核日期

2016-8-30

推文