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論文中文名稱:仿生礦化混凝土之強度與耐久性研究 [以論文名稱查詢館藏系統]
論文英文名稱:The Research on Strength and Durability of Biomimetic Mineralization Concrete [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木工程系土木與防災碩士班
畢業學年度:105
畢業學期:第二學期
出版年度:106
中文姓名:張覺中
英文姓名:Jue-Zhong Zhang
研究生學號:104428015
學位類別:碩士
口試日期:2017/07/31
論文頁數:90
指導教授中文名:黃中和
口試委員中文名:顏聰;陳建易;彭瑞麟
中文關鍵詞:仿生礦化奈米混凝土耐久性
英文關鍵詞:biomimetic mineralizationnanometerconcretedurability
論文中文摘要:混凝土發生中性化通常會對其耐久性產生不利的影響,主要原因為空氣或水分的滲入,產生溶解與析晶現象,使混凝土內的pH值降低,進而影響其耐久性。本文將中性化的主要生成物(碳酸鈣)礦化成奈米尺度顆粒,使混凝土表面具有疏水、防水以及自潔的功能,進而改變中性化之負面影響。本文使用0.6水灰比之混凝土試體,配以不同礦化條件(前處理方式、碳化溫度以及碳化壓力),進行混凝土之仿生礦化,其後進行表面接觸角、微觀結構、強度以及耐久性測試等,藉以了解仿生礦化對混凝土強度與耐久性之影響。
試驗結果顯示,混凝土經高溫高壓養護之仿生礦化處理,可擁有較高的早齡期抗壓強度。由微觀結構觀察得知,仿生礦化可將中性化生成之碳酸鈣表面形體由立方狀改變成針棒狀,並於混凝土表面形成奈米碳酸鈣,使其表面接觸角介於約80°~140°,最高可達超疏水性,並具備防水功效。在混凝土耐久性測試中,仿生礦化混凝土於快速氯離子滲透、透水性以及耐強酸試驗表現,均優於一般混凝土,顯示混凝土經過仿生礦化處理,可使其擁有較優異之強度與耐久性能。
論文英文摘要:Neutralization occurring in concrete usually has a negative impact on its durability. The major cause is that the infiltration of air or water will lead to dissolution and crystallization and reduce the pH value within concrete so as to affect its durability. This thesis mainly introduces the process of mineralizing the major product (calcium carbonate) of neutralization into nano scale particles, endowing concrete surfaces with functions of hydrophobicity, waterproofing and self-cleaning so as to change the negative impact of neutralization. This thesis utilizes concrete specimens with 0.6 water-cement ratio in combination with different conditions of mineralization (including pre-treatment method, carbonization temperature and carbonization pressure) to conduct concrete biomimetic mineralization. After that, the thesis also conducts tests of surface contact angle, micro-structure, strength and durability in order to have an understanding of the impact of biomimetic mineralization on concrete strength and durability.
Trial results indicates that the concrete processed by the biomimetic mineralization of high-temperature and high-pressure maintenance will be endowed with relatively high compressive strength in early age. From micro structure observation, it is discovered that biomimetic mineralization can change the shape of calcium carbonate produced by concrete neutralization from cube-shape to needle-shape, and also form the nano calcium carbonate on the surface of concrete, making the surface contact angle rate from 80° to 140°, achieving the grade of super hydrophobicity and having the waterproof function. In the testing of concrete durability, the performance of biomimetic mineralization in RCPT, water permeability and strong acid resistance testings has advantages over general concrete, which indicates that the concrete processed by biomimetic mineralization, it will have better strength and durability.
論文目次:摘 要 i
ABSTRACT ii
誌 謝 iv
目 錄 v
表目錄 viii
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究目的 3
1.3 研究方法與流程 3
第二章 文獻回顧 6
2.1 混凝土碳化與仿生礦化 6
2.1.1 混凝土碳化 6
2.1.2 仿生學概論 7
2.1.3 碳酸鈣的性質與種類 8
2.2 混凝土力學性質 9
2.2.1 混凝土強度之種類 9
2.2.2 養護條件對混凝土抗壓強度之影響 11
2.2.3 碳化養護對混凝土抗壓強度之影響 11
2.3 混凝土耐久性 13
2.3.1 養護條件對混凝土耐久性的影響 13
2.3.2 碳化養護對混凝土耐久性的影響 13
2.3.3 混凝土防水材料與性能 14
2.4 水化生成物與其微觀結構 15
2.4.1 水泥水化生成物 15
2.4.2 硬固混凝土之微觀結構 15
第三章 試驗規劃 38
3.1 試驗材料 38
3.2 混凝土仿生礦化處理 39
3.2.1 混凝土拌和與澆置 39
3.2.2 模板劑調配 40
3.2.3 仿生礦化前之試體準備 40
3.2.4 礦化條件設定 41
3.3 試驗儀器 41
3.4 試驗方法 43
3.4.1 疏水性評估法 43
3.4.2 混凝土強度試驗 43
3.4.3 混凝土耐久性測試法 44
3.5 試驗變數編碼與配比 45
第四章 試驗結果分析與討論 60
4.1 仿生礦化混凝土之疏水性評估 60
4.1.1 仿生礦化前處理對混凝土疏水性之影響 60
4.1.2 礦化條件對混凝土疏水性之影響 61
4.1.3 混凝土表面礦化程度與均勻性之探討 62
4.2 仿生礦化混凝土之強度 63
4.2.1 礦化前處理對混凝土強度的影響 63
4.2.2 仿生礦化條件對混凝土抗壓強度的影響 64
4.3 仿生礦化混凝土之耐久性 64
4.3.1 透水性能 64
4.3.2 耐酸鹼能力 65
4.3.3 快速氯離子滲透性 66
4.4 礦化混凝土微觀結構觀察 67
第五章 結論與建議 83
5.1 結論 83
5.1.1 仿生礦化處理對混凝土疏水性之影響 83
5.1.2 仿生礦化混凝土之強度 83
5.1.3 仿生礦化混凝土之耐久性 84
5.1.4 仿生礦化混凝土之微觀結構 84
5.2 建議 85
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論文全文使用權限:同意授權於2017-08-25起公開