鹼活化混合爐碴膠結材新拌性質與微觀組成之研究

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鐘文煥(Wen-Huan Zhong) 查詢紙本館藏

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土木工程學系

論文名稱

鹼活化混合爐碴膠結材新拌性質與微觀組成之研究

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摘要(中)

本研究將還原碴與水淬爐石粉依照一定比例混合製成混合爐碴，再以鹼活化技術活化製成膠結材。針對此膠結材之新拌性質與微觀組成進行實驗分析，並就鹼活化混合爐碴膠結材流變行為、凝結狀態判定與微觀組成架構對於性質上影響進行探討。
研究顯示鹼活化混合爐碴膠結材新拌性質具有易受外力擾動而影響工作性與凝結狀態的特性，且於拌和後1小時即產生明顯的黏滯性，因於拌和完成後即行澆置並減少外力干擾。根據新拌性質分析，鹼活化混合爐碴膠結材以水膠比0.5拌和時，漿體初凝時間約為160分鐘，終凝時間約為540分鐘。另凝結時間判定方式應分為漿體與砂漿兩種系統進行檢測，特別是漿體凝結狀態應以流度值低於80%為參考基準點。抗壓強度方面，鹼活化混合爐碴漿體3天強度可達350 kgf/cm2，7天強度可達430 kgf/cm2，但28天強度發展減緩，僅有450 kgf/cm2。微觀組成方面，鹼活化混合爐碴膠結材會因配比不同而有些許的差異，但其主體仍以C-A-S-H膠體為發展基礎。因鹼活化混合爐碴膠結材將整體環境中的Al與Si、Ca組成長鏈狀的生成產物，與水泥將Al推至水化產物外部形成較具晶相的構造相比，鹼活化混合爐碴膠結材對於針對Al進行的化學侵蝕，具有較佳的抵抗力。

摘要(英)

This study aims at the fresh property and microscopic composition of alkali-activated mixed slag. We mix ladle slag and blast furnace slag according to a certain proportion, and activate mixed slag by alkali-activated technology. The fresh property and microstructure of the cementing material are analyzed experimentally, and we discuss the rheological behavior, setting time, setting condition and microscopic composition of alkali-activated mixed slag cementing material.
This study shows that the fresh property of alkali-activated mixed slag cements is sensitive to workability and setting condition due to external disturbances, and has obvious viscosity at one hour after mixing. According to the analysis of the fresh property, when the paste is mixed by w/b ratio 0.5, the initial setting time is nearly 160 minutes and the final setting time is nearly 540 minutes. To determine the setting time should be divided into paste and mortar two systems for testing, especially the setting condition of paste should be flowability of less than 80% as a reference point. The compressive strength of alkali-activated mixed slag paste achieves 350 kgf / cm2 at 3 days, and it achieves 430 kgf / cm2 at 7 days. but the compressive strength at 28 days develop slowly, only 450 kgf / cm2. In terms of microscopic composition, the alkali-activated mixed slag cement will has a slight difference due to the different proportion, but the main microstructure is still based on the C-A-S-H gel. Alkali-activated mixed slag cement incorporates the Al ion with Si ion and Ca ion to form a long chain-like product. In contrast to ordinary Portland cement that expel Al out of the hydration products to form a more crystalline phase, alkali-activated mixed slag cement has better resistance to chemical attack, especially for the chemical attack of Al.

關鍵字(中)

★ 鹼活化混合爐碴膠結材
★ 新拌性質
★ 微觀組成

關鍵字(英)

★ Alkali-activated mixed slag cement
★ fresh property
★ microscopic composition

論文目次

圖目錄 III
表目錄 IX
第一章前言 1
1.1 研究動機 1
1.2 研究目的 3
1.3 研究內容 5
第二章文獻回顧 6
2.1 電弧爐煉鋼與電弧爐碴 6
2.1.1電弧爐煉鋼 6
2.1.2 電弧爐碴 15
2.1.3電弧爐碴法規與再利用現況 20
2.2 鹼活化技術與無機聚合物 22
2.2.1 鹼活化技術介紹 22
2.2.2 常見鹼活化劑與鹼活化反應相關變數 24
2.2.3 鹼活化技術特性與影響成效之因素 25
2.2.4鹼活化膠結材硫酸鹽侵蝕 33
2.2.5 還原碴與爐石粉混合成混合爐碴之活化成效 34
2.2.6 無機聚合物 38
2.2.7 無機聚合物之反應機理 39
2.2.8 複合無機聚合物 42
2.2.9 複合無機聚合物之結構特性 43
2.3 鹼活化膠結材新拌性質 46
2.3.1 凝結時間 47
2.3.2 流變行為 50
2.3.3 孔隙結構 56
2.4 SEM、SSNMR及XRD於鹼活化混凝土上的應用 58
2.4.1 掃描式電子顯微鏡 (SEM) 58
2.4.2 固態核磁共振光譜儀 (SSNMR) 60
2.4.3 X光繞射分析儀 (XRD) 70
第三章研究規劃 74
3.1實驗材料 74
3.2實驗儀器設備 77
3.3實驗方法與內容 87
3.3.1實驗目的與流程 87
3.3.2實驗方法 90
第四章鹼活化混合爐碴新拌性質 99
4.1凝結時間 99
4.2流變行為 104
4.2.1 N4漿體 105
4.2.2 LS20漿體 115
4.2.3 LS10漿體 124
4.2.4 LS0漿體 134
4.2.5 鹼活化混合爐碴砂漿 148
4.2.6黏滯度分析 159
4.3抗壓強度發展 165
4.4空隙分析 181
4.5鹼活化混合爐碴新拌性質結論 184
第五章鹼活化混合爐碴微觀分析 188
5.1掃描式電子顯微鏡（scanning electron microscopy，簡稱SEM） 188
5.1.1鹼活化混合爐碴SEM及EDS分析 192
5.2固態核磁共振光譜儀（solid-state nuclear magnetic resonance spectroscopy，簡稱SSNMR） 221
5.2.1 29Si固態核磁共振光譜分析 222
5.2.2 27Al固態核磁共振光譜分析 242
5.3 X光繞射分析儀（X-Ray Diffraction，簡稱XRD） 262
5.4微觀分析結論 266
第六章結論與建議 270
6.1結論 270
6.2建議 273
參考文獻 275

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指導教授

黃偉慶

審核日期

2018-1-30

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