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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 廖文正(Wen-Cheng Liao) | |
| dc.contributor.author | Chia-Wei Chang | en |
| dc.contributor.author | 張家維 | zh_TW |
| dc.date.accessioned | 2022-11-24T03:16:59Z | - |
| dc.date.available | 2021-11-08 | |
| dc.date.available | 2022-11-24T03:16:59Z | - |
| dc.date.copyright | 2021-11-08 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-10-08 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/80798 | - |
| dc.description.abstract | 為了應對高強度混凝土的脆性破壞行為，大量鋼筋的使用而導致施工與澆置上的困難。過往許多研究指出添加鋼纖維在高強度混凝土中可以增加混凝土的韌性，將高強度混凝土脆性的破壞模式從而轉換成韌性破壞，且紓解鋼筋密集配置的問題。新世代高性能混凝土擁有使用自充填高流動性的配比設計，即使添加鋼纖維進入配比中，在澆置時仍有減少震動搗實，易泵送、澆置速度快、可有效節省人力及工時的特性。新世代高性能混凝土除了在力學性質上擁有優異表現外，在工作性上的良好優異表現也能確保施工品質完善。在未來的工程實務上，新世代高性能混凝土將被廣泛的使用，探討其各項性質變成研究中的一個必修課題，有利後續研究學者跟工程師去分析以及設計。 本研究對收縮裂縫進行探討，對於鋼纖維抑制收縮產生的束制裂縫效果進行實驗，並量化實驗結果進行分析。添加鋼纖維的新世代高性能混凝土除了在抗裂能力下有有效的提升外，本研究亦探討添加鋼纖維的新世代高性能混凝土各項力學基本性質，並從研究群以及文獻中提出的各項預測式進行回歸以及整理，最後提出預測式以便工程師在分析時可以直接參考及使用。 | zh_TW |
| dc.description.provenance | Made available in DSpace on 2022-11-24T03:16:59Z (GMT). No. of bitstreams: 1 U0001-0610202115330500.pdf: 13035853 bytes, checksum: 0be0d66b171b45767728165c5da16e61 (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | 中文摘要 i ABSTRACT ii 目錄 iii 表目錄 vii 第一章 緒論 1 1.1 動機與目的 1 1.2 研究範圍與內容 2 1.3 研究流程 3 第二章 文獻回顧 5 2.1 新世代高性能混凝土 5 2.1.1 高強度混凝土 5 2.1.2 鋼纖維種類 7 2.1.3 新世代高性能混凝土特性 8 2.2 新世代高性能混凝土新拌與硬固時的收縮 8 2.2.1 混凝土之收縮種類 8 2.2.2 影響混凝土收縮因素 11 2.2.3 混凝土收縮裂縫機制 28 2.2.4 塑性收縮裂縫發展 33 2.2.5 塑性收縮裂縫預測模型 38 2.3 新世代高性能混凝土力學性質 40 2.3.1 鋼纖維對混凝土材料基本力學性質影響 40 2.3.2 端鉤型鋼纖維拉拔機制 50 2.3.3 端鉤型鋼纖維拉拔能量預測模型 52 2.3.4 等效握裹強度 59 2.3.5 鋼纖維混凝土應變硬化行為 60 2.3.6 韌性評估方式 63 2.3.7 彈性模數預測公式 66 2.3.8 鋼纖維混凝土的抗壓應力應變曲線模型 67 第三章 實驗計畫 69 3.1 實驗內容 69 3.1.1 實驗背景 69 3.1.2 實驗架構 69 3.2 試驗材料與配比設計 71 3.2.1 試驗材料 71 3.2.2 配比設計 72 3.3 試驗儀器設備 78 3.4 試體之製作 82 3.4.1 混凝土拌和流程 82 3.4.2 坍流度試驗 83 3.5 塑性收縮裂縫試驗 87 3.5.1 初凝終凝試驗 87 3.5.2 泌水試驗 88 3.5.3 蒸發率量測 89 3.5.4 ASTM 1579 89 3.5.5 Image J量測裂縫特徵 91 3.6 收縮束制環試驗 92 3.6.1 ASTM 1581 92 3.7 力學試驗 93 3.7.1 抗壓試驗 93 3.7.2 抗彎試驗 95 3.7.3 直拉試驗 97 3.7.4 劈裂試驗 98 3.7.5 直剪試驗 100 第四章 資料庫建立與實驗結果 101 4.1 新世代高性能混凝土力學性質資料庫建立 101 4.1.1 劈裂張力強度資料庫 102 4.1.2 破裂模數資料庫 106 4.2 收縮裂縫試驗 111 4.2.1 塑性收縮試驗 111 4.2.2 收縮束制環試驗 115 4.3 力學性質試驗 118 4.3.1 抗壓試驗 118 4.3.2 劈裂試驗 124 4.3.3 抗彎試驗 126 4.3.4 直拉試驗 134 4.3.5 直剪試驗 139 第五章 分析與討論 146 5.1 添加鋼纖維對於塑性收縮裂縫試驗之影響 146 5.1.1 初凝終凝時間跟泌水率蒸發率 146 5.1.2 裂縫形式(包含裂縫面積、總長度、最大寬度、平均寬度) 147 5.2 添加鋼纖維對於混凝土收縮束制鋼環試驗之影響 150 5.2.1 混凝土開裂應力 150 5.2.2 裂縫形式 151 5.3 抗壓試驗 152 5.3.1 應力應變曲線 152 5.3.2 TR值 155 5.3.3 彈性模數 156 5.4 劈裂試驗 157 5.4.1 文獻預測公式 157 5.4.2 S0劈裂張力強度預測 161 5.4.3 S150劈裂張力強度預測 164 5.5 抗彎試驗 169 5.5.1 文獻預測公式 169 5.5.2 S0破裂模數強度預測 172 5.5.3 S150破裂模數強度預測 174 5.6 直拉試驗 178 5.7 直剪試驗 179 5.8 新世代高性能混凝土各項預測式彙整以及未來結構應用發展 181 第六章 結論與建議 184 6.1 結論 184 6.2 建議 184 參考文獻 186 | |
| dc.language.iso | zh-TW | |
| dc.subject | 預測式 | zh_TW |
| dc.subject | 鋼纖維 | zh_TW |
| dc.subject | 新世代高性能混凝土 | zh_TW |
| dc.subject | 混凝土力學性質 | zh_TW |
| dc.subject | 收縮裂縫 | zh_TW |
| dc.subject | steel fiber | en |
| dc.subject | predictive formula | en |
| dc.subject | shrinkage crack | en |
| dc.subject | concrete mechanical property | en |
| dc.subject | new generation high performance concrete | en |
| dc.title | 新世代高性能混凝土抗裂指標與力學性能研究 | zh_TW |
| dc.title | The Study of Crack Resistance Index and Mechanical Properties for New Generation High Performance Concrete | en |
| dc.date.schoolyear | 109-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 詹穎雯(Hsin-Tsai Liu),鄭敏元(Chih-Yang Tseng) | |
| dc.subject.keyword | 鋼纖維,新世代高性能混凝土,混凝土力學性質,收縮裂縫,預測式, | zh_TW |
| dc.subject.keyword | steel fiber,new generation high performance concrete,concrete mechanical property,shrinkage crack,predictive formula, | en |
| dc.relation.page | 193 | |
| dc.identifier.doi | 10.6342/NTU202103585 | |
| dc.rights.note | 同意授權(限校園內公開) | |
| dc.date.accepted | 2021-10-08 | |
| 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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