鋼絲網加勁高韌性纖維水泥基複合材料之力學行為研究

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姓名

顏愷建(Kai-chien Yen) 查詢紙本館藏

畢業系所

土木工程學系

論文名稱

鋼絲網加勁高韌性纖維水泥基複合材料之力學行為研究

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摘要(中)

鋼絲網加勁之混凝土（ferrocement）常用以補強鋼筋混凝土抗耐震構件，本文研發新型之鋼絲網加勁水泥複合材料，使用高韌性纖維水泥複合材料取代傳統混凝土材料，以強化構件之拉壓性質、以及破壞模式。研究內容共設計三種不同試體，分別由高韌性纖維水泥複合材料、鋼絲網加勁混凝土、以及鋼絲網加勁高韌性纖維水泥複合材料所製成，採用直接拉力試驗、四點彎矩試驗、剪力試驗以及圍束試驗，探討不同加勁材料所展現之強度、韌性、以及破壞模式，此外，並評估不同鋼絲網加勁材之網格大小與含量對材料行為之影響。實驗結果顯示高韌性纖維水泥複合材料展現良好之裂縫控制效果，於試體表面產生多重細微裂縫；鋼絲網加勁混凝土則擁有良好之消能能力與韌性；而鋼絲網加勁高韌性纖維水泥材料則更進一步改善試體之力學性質，極限拉力強度最高可達8.4 MPa，最大之應變量甚至可高達8%。最後以氯離子穿透性評估材料耐久性，依ASTM C1202推估此新型水泥基材料具中等程度之氯離子滲透抗性。

摘要(英)

Ferrocement has often been used to retrofit conventional reinforced concrete members to enhance their seismic performance. This paper develops a new type of steel mesh reinforced cementitious composites. The Engineered Cementitious Composites (ECC) is employed to replace traditional mortar in conventional ferrocement to strengthen the composite’s performance on tension, compression, shear, and flexure. A series of experimental investigations, including the direct tensile test, four point bending test, shear test, and compression test, are conducted to explore the behavior of the newly developed composite. In particular, the impact of the steel mesh size on the new ferrocement’s behavior is assessed. The results show that the steel mesh reinforced ECC possessing an appealing crack control ability, exhibiting multiple tiny cracks on the specimen surface. It is also found that the steel mesh reinforced ECC is able to effectively improve the mechanical properties of the conventional ferrocement. Furthermore, RCPT is carried out to evaluate ECC’s durability. It is found that this new cement-based composite material has a moderate degree of resistance to chloride ion penetration.

關鍵字(中)

★ 鋼絲網
★ 纖維
★ 水泥基複合材料
★ 材料試驗

關鍵字(英)

論文目次

第一章緒論 1
1.1 研究動機 1
1.2 研究目的 1
1.3 研究方法 2
第二章文獻回顧 1
2.1工程水泥基複合材料(Engineered Cementitious Composites, ECC) 1
2.2 鋼絲網混凝土(FERROCEMENT) 3
2.2.1背景 3
2.2.2鋼絲網水泥之優勢 5
2.2.4規範與設計 10
2.3耐久性 11
2.3.1氯離子傳輸機理 12
2.3.2孔隙結構 12
2.3.3快速氯離子穿透試驗(Rapid Chloride Permeability Test, RCPT) 14
2.3.4防水粉 14
第三章試驗計畫 16
3.1 試驗概述 16
3.2 試驗材料 16
3.3 試體參數、編號 19
3.4儀器與設備 20
3.5試體製作與養護流程 21
3.5.1 ECC配比 21
3.5.2拌合流程 21
3.5.3試體製作與養護 22
3.6試驗內容與方法 26
3.6.1 坍流度試驗 26
3.6.2 直接拉力試驗 26
3.6.3四點彎矩試驗 27
3.6.4剪力試驗 28
3.6.5壓力試驗、圍束試驗 29
3.6.6快速氯離子穿透試驗(Rapid Chloride Permeability Test, RCPT) 30
第四章試驗結果與討論 32
4.1直接拉力試驗 32
4.1.2 ECC 33
4.1.3 SMR-M抗拉結果 34
4.1.4 SMR-ECC抗拉結果 37
4.1.5拉力試驗小結 40
4.2四點彎矩試驗 43
4.2.1 Mortar 43
4.2.2 ECC 44
4.2.2 SMR-M四點彎矩試驗結果 45
4.2.3 SMR-ECC四點彎矩試驗結果 48
4.2.4四點彎矩試驗小結 49
4.3 剪力試驗結果 56
4.3.1 SMR-M剪力試驗結果 60
4.3.2 SMR-ECC剪力試驗結果 62
4.3.3剪力試驗小結 64
4.4單軸壓力試驗 66
4.4.1材料抗壓 66
4.4.2 SMR-M圍束補強結果 68
4.4.3 SMR-ECC圍束補強結果 70
4.4.4混凝土圍束試驗小結 72
4.5耐久性試驗 73
4.5.1防水粉加入ECC對力學行為影響 73
4.5.2快速氯離子穿透試驗 (RCPT) 75
第五章結論與建議 76
參考文獻 78

參考文獻

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指導教授

洪崇展(Chung-chan Hung)

審核日期

2014-8-14

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