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研究生:張黛芬
研究生(外文):Chang, Dial-Fen
論文名稱:自充填混凝土廠拌最佳化配比設計探討
論文名稱(外文):The Study of SCC Optimal Mix Design in Ready Mix Plant
指導教授:王和源 博士
指導教授(外文):Dr. Wang, Her-Yuan
學位類別:碩士
校院名稱:國立高雄應用科技大學
系所名稱:土木工程與防災科技研究所
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:100
畢業學年度:100
語文別:中文
論文頁數:86
中文關鍵詞:自充填混凝土、廠拌最佳化配比設計、飛灰、高爐石粉
外文關鍵詞:Self-Compacting Concrete, Mix DesignOptimal Mix Design, Fly AshBlast Furnace Slag
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自充填混凝土(Self-Compacting Concrete,SCC)為近代混凝土工程技術發展中,繼高強度混凝土後,為混凝土材料科技上之一大突破,其重要性在於改變混凝土施工流程,將傳統混凝土中需振動搗實的步驟免除,除不影響其混凝土品質功能,甚有提昇混凝土構造物之服務績效。SCC於1986年緣起日本,目的在因應混凝土施工技術逐漸低落的困境,及創造具耐久性之混凝土構造物。台灣地區為因應一般混凝土在鋼筋密集構件,及具封閉性空間限制等條件而難以澆置情況下,於1999年開始使用SCC,除於二高烏日交流道聯絡道穿越橋,亦在建築工程如台北101大樓柱內灌漿獲致良好成效。自此,SCC被廣泛使用在國道、地鐵、捷運及興建中的台北雙子星大樓,累計用量達100萬立方米。
SCC在早期應用因普遍經驗不足,故在初期時,單就配比設計過程即須耗時六個月,又為獲取高流動性、充填性及通過能力,亦有出現不同的配比的方法,實有必要將國內過去十餘年來的使經驗加以整合,期能階段性的回顧與探討SCC的技術。本研究先經文獻回顧,蒐集國內外有關配比設計考量因素、配比設計法等,再運用田野調查方法,對預拌混凝土廠進行問卷調查,瞭解目前預拌混凝土廠在生產SCC時,所採用的配比設計法及配比調整方式等經驗模式,並進行現地訪談,最後將調查結果彙整及分析,經實務專家座談後,提出SCC商業化量產之最佳化配比設計(Optimal Mix Design)流程及配比參數表,並經預拌廠驗證該方法具為可行,除縮短使用者產製時程,確保SCC品質水準,並因其方法的簡易,對無經驗者亦能滿足其在配比設計上的需求。
Self-Compacting Concrete (SCC) is one of the major breaks through in modern concrete engineering technology after high strength concrete. The significance of this invent based on the concrete placing procedure will be simplified. SCC is a concrete with high-flowing ability, no segregation during flowing, able to passing through spacing of rebar and fill formwork only through the action of gravity with no vibration needed. Even that, the quality of concrete will not be influenced; the long term performance will be ensured. In Taiwan’s construction industry, major problems of concrete on bridges including difficulties in placing, segregation and honeycomb of concrete, risk of low strength and durability concern. Reasons of this phenomenon were due to structural member with high quantity of reinforcement, narrow spacing between rebar, poor workability of concrete, difficult or less vibration of concrete, add water into concrete during pumping and lack of technical labor for concreting, etc.. Since 1999, SCC was first applied on an overpass bridge of Wu-Ze interchange at Second Expressway, it also being used on high-rise building, such as Taipei 101 and Taipei MRT system. Since then, SCC becomes a popular concrete material in Taiwan.
Due to lack of SCC producing experience at early stage, the mix design procedure will take more then six months. Sometimes, for the purpose to conform the requirements of slump flow, filling ability and passing ability, different mix design methods will be developed. It should be necessary to collect, review and integrate the experiences of SCC mix design method and related technology for the past decade. This research includes literature review, mix design method, field investigation to the ready mix plant, discussion the mixing procedure and material proportion adjustment sequence with field engineers. A forum of SCC mix design and production technology will also be held. After that, a Optimal Mix Design flow chart and a parameter table for mix design will be submitted to test and verify its feasibility. The results show, the Optimal Mix Design flow chart and parameter table for SCC mix design can be easily used even for unexperienced engineer, as well as shorten the time during mix design.
目 錄
摘 要 I
Abstract II
目 錄 III
表目錄 VI
圖目錄 VIII
照片目錄 IX
第一章 緒論 1
1.1 前言 1
1.2 研究動機 1
1.3 研究目的 1
1.4 研究方法與流程 2
1.5 預期成果 2
1.6 架構與內容 2
第二章 文獻回顧 5
2.1 SCC特性 5
2.2 組成材料 6
2.2.1 膠結料 6
2.2.2 惰性材料 7
2.2.3 粒料 7
2.2.4 拌和水 7
2.2.5 化學摻料 8
2.3 配比設計法 8
2.4 驗證試驗法 13
2.4.1 坍流度試驗(流動性試驗) 14
2.4.2 500mm流度到達時間(材料分離抵抗性) 14
2.4.3 障礙通過性試驗(U型或箱型填充高度試驗) 14
2.4.4 V漏斗流下時間試驗法(材料分離抵抗性) 14
2.5 新拌混凝土性質 14
2.6 硬固混凝土性質 15
2.6.1 強度性質 15
2.6.2 變形特性 15
2.6.3 耐久性質 16
2.7 品質常見問題及原因[44] 16
第三章 研究方法 36
3.1 計畫架構 36
3.2 研究項目 36
3.2.1 文獻蒐集與探討 36
3.2.2 問卷調查 36
3.2.3 實地訪談 37
3.2.4 調查結果比較研究 37
3.2.5 專家座談 37
3.2.6 最佳化配比模式建立 37
3.2.7 實證對比 37
3.2.8 結論與建議 37
3.3 問卷調查內容 37
第四章 研究結果與分析 41
4.1 問卷調查結果與討論 41
4.1.1 SCC試拌至量產時間及配比特徵? 41
4.1.2 配比試拌過程,工作性檢驗發生如下狀況,配比調整內容為何? 42
4.1.3 SCC進入量產期間,有那些因子會影響其品質的穩定性? 42
4.1.4 砂石級配對SCC工作性的影響為何? 42
4.1.5 量產供應SCC時最大的挑戰為何? 43
4.1.6 施工時最常遭遇的問題? 43
4.1.7 SCC運至工地若遭退料,原因為何? 43
4.1.8 現有泵送設備是否適合使用在SCC,是否應規定泵送設備的規格? 43
4.1.9 SCC配比方法或流程,是否不明確或未量化待改進?有何可改進處? 43
4.2 專家訪談 43
4.3 研究結果分析 44
第五章 最佳化配比設計 67
5.1 配比演繹 67
5.2 最佳化配比設計流程 68
5.3 配比驗證 68
5.4 專家學者座談 69
第六章 結論與建議 80
6.1 結論 80
6.2 建議 80
參考文獻 82
作者簡歷 86
參考文獻
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