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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 詹穎雯 | zh_TW |
dc.contributor.advisor | Yin-Wen Chan | en |
dc.contributor.author | 蔡宇筌 | zh_TW |
dc.contributor.author | Yu-Chiuan Tsai | en |
dc.date.accessioned | 2023-08-16T16:45:47Z | - |
dc.date.available | 2023-11-09 | - |
dc.date.copyright | 2023-08-16 | - |
dc.date.issued | 2023 | - |
dc.date.submitted | 2023-08-09 | - |
dc.identifier.citation | [1] “Standard Specification for Portland Cement”, ASTM C 150 , 2007.
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[49] 陸景文,「台灣地區混凝土橋梁溫度、彈性應變、潛變及乾縮特性之整合研究」,國立台灣大學土木工程學研究所,2000。 [50] 經濟部中央地質調查所,「台灣地區陸上砂石資源調查與研究報告」,1982。 [51] 秦維邑,「建置及應用資料庫以發展台灣混凝土收縮預測公式」,台灣大學土木工程所結構組,2017。 [52] 日本土木学会,「コンクリート標準示方書 施工編」,2012。 [53] Khan, A.A., W.D. Cook, and D. Mitcheel, “Thermal Properties and Transient Thermal Analysis of Structural Members duringHydration, “ACI Journal, ProceedingsV.95, No.3, pp.293-303 ,1998. [54] Brown T. D., Javaid M. Y., “The Thermal Conductivity of Fresh Concrete”, Mater. Construct., pp.411-416, 1970. [55] G. De Schutter, L. Taerwe, “Specific Heat and Thermal Diffusivity of Hardening Concrete”, Magazine of Concrete Research, No. 172, Sept., pp. 203-208, 1995. [56] 許燿安,「以成熟度法預測混凝土早期水化行為與巨積混凝土早期溫度場之有限元分析」,台灣大學土木工程所結構組,2018。 [57] 林聖凱,「台灣地區巨積混凝土配比之早期溫度場模擬與分析」,台灣大學土木工程所結構組,2019。 [58] 張哲侖,「台灣地區巨積混凝土配比之早期溫度場分析與預測」,台灣大學土木工程所結構組,2020。 [59] 邱泓睿,「台灣巨積混凝土柱之早期溫度場預測式」,台灣大學土木工程所結構組,2021。 [60] 賴宗佑,「台灣巨積混凝土版之早期溫度場預測式」,台灣大學土木工程所結構組,2022。 [61] Jonathan L. Poole, Kyle A. Riding, Kevin L. Folliard, Maria C. G. 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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/89012 | - |
dc.description.abstract | 本研究對本研究群所修改的水化度三參數預測模型為基礎再次進行參數的修正,並完善巨積混凝土溫度預測式網頁。化學摻料在國內巨積混凝土工程中,普遍應用於工作度需求較高的案例。但在進行化學摻料的添加時,通常會忽略化學摻料對混凝土在溫度表現上的影響,因此本研究回歸到配比設計上,以不同化學摻料添加量作為主要變因進行了抗壓強度試驗和絕熱溫升試驗。
透過進行抗壓強度試驗能得到在強度表現上造成的影響;而透過絕熱溫升試驗來觀察混凝土早齡期水化反應表現,從溫升表現可直觀看出化學摻料對溫度造成的影響。而將絕熱溫升試驗結果,配合成熟度法(等效齡期)的概念,運用抗壓強度試驗結果外插出極限水化度,進而透過水化度曲線模型迴歸出設計配比所對應的水化度三參數。 以不同化學摻料添加量,在純水泥、含有25%飛灰、含有50%爐石粉三種情況下進行各項試驗,透過計算迴歸得到每筆配比所對應的水化度三參數,再配合現有的國內水化度資料,透過非線性迴歸來進行水化度三參數預測式之修正,並將修正後之預測式修改至溫度預測式網頁上以完善之。 | zh_TW |
dc.description.abstract | Based on the modified hydration three-parameter prediction model developed by NTUCE research group, this study further revised the parameters correlated to chemical admixture and improved the website of temperature prediction model for mass concrete. Chemical admixtures are commonly used in mass concrete projects, especially in cases where high workability is required. However, the influence of chemical admixtures on concrete hydration performance is often not taking into account. Therefore, this study focused on mix proportioning design and conducted compressive strength tests and adiabatic temperature measurements with different dosages of chemical admixtures.
The compressive strength tests provided insights into the strength performance, while the adiabatic temperature measurements reveal observed the early-age hydration reaction of concrete. The temperature rise behavior obviously showed the effects of chemical admixtures on temperature. The adiabatic temperature measurements were then incorporated with the maturity method and the concept of equivalent age, and then the ultimate hydration degree can be extrapolated using the compressive strength test results. Subsequently, the hydration three-parameter values corresponding to the mix proportioning were obtained through regression analysis using a hydration degree curve model. Tests were conducted with different dosages of chemical admixtures in three scenarios: pure cement, 25% of cement replaced by fly ash, and 50% of cement replaced by slag. Regression analysis was performed to determine the hydration three-parameter values for each mix proportion. Furthermore, using nearly 20 years of hydration data from domestic and international sources, nonlinear regression analysis was conducted to revise the hydration degree three-parameter prediction model. The modified prediction model was then incorporated into the temperature prediction website for further improvement. | en |
dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-08-16T16:45:47Z No. of bitstreams: 0 | en |
dc.description.provenance | Made available in DSpace on 2023-08-16T16:45:47Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | 誌謝 i
摘要 ii Abstract iii 目錄 v 表目錄 viii 圖目錄 x 第一章、 緒論 1 1.1 研究動機 1 1.2 研究目的 2 1.3 研究流程圖 2 第二章、 文獻回顧 4 2.1 材料介紹 4 2.1.1 卜特蘭水泥 4 2.1.2 卜特蘭水泥的組成 5 2.2 卜作嵐材料 6 2.2.1 水淬高爐石粉 7 2.2.2 飛灰 8 2.3 巨積混凝土 8 2.3.1 巨積混凝土定義及相關規定 8 2.3.2 巨積混凝土溫度特性 9 2.3.3 巨積混凝土溫度裂縫 11 2.3.4 巨積混凝土溫度應力種類 12 2.4 混凝土水化熱 13 2.4.1 影響混凝土水化熱之膠結材料因子 13 2.4.2 影響混凝土水化熱之膠結材料細度因子 19 2.4.3 影響混凝土水化熱之膠結材料用量影響因子 20 2.4.4 影響混凝土水化熱之水膠比影響因子 21 2.4.5 影響混凝土水化熱之新拌溫度影響因子 22 2.4.6 影響混凝土水化熱之化學摻料因子 24 2.5 混凝土水化度 27 2.5.1 水化度定義 27 2.5.2 水化度之量測方法 28 2.5.3 極限水化度 29 2.5.4 成熟度法(Maturity Method) 32 2.5.5 成熟度計算 32 2.5.6 表徵活化能 35 2.5.7 混凝土水化度參數預測模型 37 2.6 台灣混凝土配比特性 39 第三章、 實驗設計與分析方法 42 3.1 試驗材料與膠結材料之物化性質 42 3.2 試驗儀器與設備 45 3.3 混凝土拌合及配比設計 48 3.3.1 混凝土拌合流程 48 3.3.2 配比設計 48 3.4 新拌混凝土坍度試驗 50 3.5 混凝土抗壓強度試驗 51 3.6 混凝土比熱及單位重計算方法 52 3.7 混凝土絕熱溫升試驗 54 3.7.1 絕熱溫升試驗原理及方法 54 3.7.2 熱溫升試驗儀器校正 56 3.8 混凝土水化度成長曲線 57 3.8.1 各配比水化度成長曲線計算方法 57 3.8.2 極限水化度計算方法 60 第四章、 分析結果與討論 61 4.1 新拌混凝土坍度試驗結果與分析 61 4.2 混凝土抗壓強度試驗結果與分析 62 4.3 混凝土比熱及單位重計算結果 66 4.4 絕熱溫升試驗結果與分析 67 4.5 水化度成長曲線計算結果與分析 77 4.6 水化度三參數敏感度分析 82 4.7 水化度參數預測模型迴歸 93 第五章、 結論與建議 106 5.1 結論 106 5.2 建議 107 參考文獻 108 | - |
dc.language.iso | zh_TW | - |
dc.title | 台灣地區巨積混凝土配比之化學摻料敏感度分析 | zh_TW |
dc.title | Sensitivity Analysis of Chemical Admixtures of Mass Concrete Mix Design in Taiwan | en |
dc.type | Thesis | - |
dc.date.schoolyear | 111-2 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 廖文正;楊仲家 | zh_TW |
dc.contributor.oralexamcommittee | Wen-Cheng Liao;Chung-Chia Yang | en |
dc.subject.keyword | 巨積混凝土,成熟度法,等效齡期,水化度參數,絕熱溫升試驗,化學摻料,預測模型, | zh_TW |
dc.subject.keyword | mass concrete,maturity method,equivalent age,hydration parameters,adiabatic calorimetry,chemical admixture,prediction mode, | en |
dc.relation.page | 115 | - |
dc.identifier.doi | 10.6342/NTU202302471 | - |
dc.rights.note | 同意授權(限校園內公開) | - |
dc.date.accepted | 2023-08-10 | - |
dc.contributor.author-college | 工學院 | - |
dc.contributor.author-dept | 土木工程學系 | - |
顯示於系所單位: | 土木工程學系 |
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