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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/60969完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 詹穎雯 | |
| dc.contributor.author | Chien-Ju Lin | en |
| dc.contributor.author | 林茜如 | zh_TW |
| dc.date.accessioned | 2021-06-16T10:39:03Z | - |
| dc.date.available | 2013-08-20 | |
| dc.date.copyright | 2013-08-20 | |
| dc.date.issued | 2013 | |
| dc.date.submitted | 2013-08-13 | |
| dc.identifier.citation | [1] P.D. Cady, R.E. Weyers, “Chloride penetration and the deterioration of concrete bridge decks”, Cement & Concrete Aggregate, Vol. 5, pp. 81–87, 1983.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/60969 | - |
| dc.description.abstract | 台灣沿海地區高溫、潮濕，沿海橋梁受到環境影響，橋梁容易受到大氣中氯鹽離子影響。橋梁長期受到環境影響，形成裂縫氯離子藉由裂縫進入混凝土入中。氯離子滲入鋼筋混凝土結構中劣化原因。當鋼筋表面達氯離子臨界濃度時，鋼筋混凝土中鋼筋腐蝕混凝土產生裂縫，造成鋼筋握裹力下降，進而降低結構物撓曲強度。
文獻中現地曝放試驗試體多曝放於水下或潮汐間帶，混凝土試體較少曝放於沿海區域的大氣環境中。因此本研究採用飛來鹽份採集器收集大氣中氯鹽量。探討大氣中氯鹽量與混凝土中表面氯離子關係。 本研究希望藉由現地曝放試驗與鹽霧加速試驗，得知鹽霧加速試驗表面氯離子濃度表現與現地曝放試驗表面氯離子濃度表現。現地曝放試驗試體曝放立面角度不同，有0°、45°、90°、135°與180°。現地曝放試驗包含氣象因子資料，尋求表面氯離子濃度與氣象因子關係。 | zh_TW |
| dc.description.abstract | The weather is hot and humid in coastal region of Taiwan. Costal bridges affected by environment, bridges are susceptible to atmospheric influence of chloride ions. Bridges has been an environmental impact for a long time, the chloride ions penetration into the concrete of cracks. Whenever the threshold amount of chloride at the surface of reinforcement is reached, reinforcement corrosion and concrete cracking may occur resulting in decreasing the bond strength between concrete and reinforcement,and subsequently reducing the flexural or shear strength of the structure.
Situ exposures most discuss test specimen placeing in water or exposed to tidal zone, less exposed concrete specimen in the coastal zone atmosphere in literature. Therefore, this study uses spray salt collectors collect chloride from marine aerosol. The relationship between chloride from marine aerosol and surface chloride of concrete is discussed in this paper. The paper hopes to find the relationship between field test and salt spray test. Release the relationship between surface chloride of field test and surface chloride of spray salt test. Field exposure test discuss test side of speciments exposed to different angle, there are 0 °, 45 °, 90 °, 135 ° and 180 °. The field test comprised environmental characterisation. Find the relationship between environmental characterization and surface chloride. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T10:39:03Z (GMT). No. of bitstreams: 1 ntu-102-R00521215-1.pdf: 6393088 bytes, checksum: 044c9256e214c798debf965ad8a3c113 (MD5) Previous issue date: 2013 | en |
| dc.description.tableofcontents | 口試委員會審定書 #
誌謝 i 摘要 ii Abstract iii 目錄 iv 表目錄 viii 圖目錄 x 照片目錄 xvi Chapter 1 第一章 緒論 1 1.1 研究動機與目的 1 1.2 研究方法與內容 1 1.3 研究流程 1 Chapter 2 第二章 文獻回顧 3 2.1 氯離子在混凝土中的傳輸行為 3 2.1.1 氯離子來源和存在型態 3 2.1.2 氯離子傳輸途徑 4 2.1.3 擴散係數 7 2.1.4 養護條件對擴散係數影響 9 2.2 混凝土中影響氯離子滲透行為的因素 10 2.2.1 卜作嵐材料 10 2.2.2 混凝土孔隙 10 2.2.3 水灰比 11 2.2.4 水泥用量 11 2.3 卜作嵐材料對混凝土中氯離子之影響 12 2.3.1 飛灰對混凝土中氯離子的影響 12 2.3.2 爐石對混凝土中氯離子的影響 16 2.3.3 爐灰混凝土中氯離子的影響 17 2.4 大氣中氯鹽量試驗方法 18 2.4.1 濕燭法 18 2.4.2 飛來鹽採集器方法 18 2.5 擴散係數和表面氯離子關係 19 2.6 養護條件和表面氯離子關係 21 2.7 曝放條件和表面氯離子關係 21 2.8 氣象因子對表面氯離子濃度影響 22 2.8.1 雨量對大氣氯鹽量影響 22 2.8.2 風速對大氣氯鹽量的影響 23 2.9 混凝土氯離子耐久性試驗與現地曝放試驗 24 2.9.1 鹽霧加速試驗 24 2.9.2 現地曝放試驗 26 Chapter 3 第三章 實驗計畫 66 3.1 實驗內容與架構 66 3.2 大氣中氯鹽量分佈試驗 66 3.2.1 大氣中氯鹽採集器試驗規劃點 66 3.2.2 氯鹽採集器製作和安裝 66 3.2.3 大氣中氯鹽採集方法 67 3.2.4 氣象資料蒐集與分析 68 3.3 混凝土試體現地曝放試驗 68 3.3.1 試體材料與參數 68 3.3.2 實驗儀器 69 3.3.3 現地曝放場地規劃 70 3.3.4 試體設計與建置 70 3.3.5 試體取樣方法 71 3.3.6 試體表面氯離子濃度試驗 71 3.4 混凝土試體鹽霧加速試驗 72 3.4.1 試體材料與參數 72 3.4.2 試體設計與建置 72 3.4.3 試體取樣方法 72 3.4.4 試體表面氯離子濃度試驗 72 Chapter 4 第四章 試驗結果與討論 87 4.1 鹽霧室氯離子濃度 87 4.2 抗壓強度 87 4.2.1 水膠比 87 4.2.2 飛灰添加量抗壓強度表現 88 4.2.3 爐石添加量抗壓強度表現 89 4.3 現地曝放試驗結果 90 4.3.1 現地大氣中氯鹽量試驗結果與分析 90 4.3.2 現地大氣中附著氯鹽量試驗結果與分析 91 4.3.3 現地氣象資料蒐集 91 4.4 現地曝放試體表面氯離子濃度 93 4.5 鹽霧室加速試驗表面氯離子濃度 94 4.5.1 水灰比對表面氯離子關係 94 4.5.2 循環次數與表面氯離子關係 95 4.5.3 飛灰取代率與表面氯離子濃度 96 4.5.4 爐石取代率與表面氯離子濃度 97 4.5.5 爐灰添加量對表面氯離子濃度影響 97 4.5.6 綜合比較 97 Chapter 5 第五章 結論與建議 147 5.1 結論 147 5.2 建議 148 REFERENCE 149 | |
| dc.language.iso | zh-TW | |
| dc.subject | 表面氯離子 | zh_TW |
| dc.subject | 鹽霧加速試驗 | zh_TW |
| dc.subject | 現地曝放試驗 | zh_TW |
| dc.subject | 曝放角度 | zh_TW |
| dc.subject | Surface Chloride | en |
| dc.subject | field exposure test | en |
| dc.subject | salt spray test | en |
| dc.subject | exposure angle | en |
| dc.title | 環境條件對混凝土結構物表面氯離子濃度入滲行為之研究 | zh_TW |
| dc.title | Behavior of Surface Chloride Iron Diffusion into Concrete under Different Environmental Conditions | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 101-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 劉禎業,楊仲家,廖文正 | |
| dc.subject.keyword | 表面氯離子,現地曝放試驗,鹽霧加速試驗,曝放角度, | zh_TW |
| dc.subject.keyword | Surface Chloride,field exposure test,salt spray test,exposure angle, | en |
| dc.relation.page | 159 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2013-08-13 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 土木工程學研究所 | zh_TW |
| 顯示於系所單位： | 土木工程學系 | |
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