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系統識別號 U0026-0812200910222717
論文名稱(中文) 輸氣混凝土中性化行為之探討
論文名稱(英文) STUDY ON CARBONATION BEHAVIOR OF AIR-ENTRAINING CONCRETE
校院名稱 成功大學
系所名稱(中) 土木工程學系專班
系所名稱(英) Department of Civil Engineering (on the job class)
學年度 90
學期 2
出版年 91
研究生(中文) 薛蒼林
研究生(英文) Tsang-Lin Hsueh
學號 n6789122
學位類別 碩士
語文別 中文
論文頁數 116頁
口試委員 口試委員-吳振成
指導教授-王櫻茂
口試委員-陳豪吉
中文關鍵字 電學性質  微觀結構  中性化  物理性質  輸氣混凝土 
英文關鍵字 carbonation  air-entraining concrete  physical character  electrical character  microstructure 
學科別分類
中文摘要 中文摘要

本研究利用加速中性化設備使試體快速中性化,並藉由抗壓強度試驗、抗彎強度試驗、抗拉強度試驗、劈裂強度試驗、吸水速率試驗、吸水率試驗、電流滲透量試驗、電阻值量測試驗、超音波量測試驗、汞壓測孔分析試驗及酚試液測定法等試驗結果做分析,探討輸氣混凝土在不同水灰比與養護條件加速中性化後力學性質、物理性質、電學性質及微觀結構的改變。
研究結果顯示,混凝土中性化後發生抗壓強度、抗彎強度、抗拉強度及劈裂強度皆提高,吸水速率及吸水率明顯下降,電滲量降低、電阻值及超音波速增加,平均孔隙直徑變小等現象。分析各項試驗變數,發現混凝土試體在添加輸氣劑、高水灰比及曝露於自然環境中不養護中性化程度最顯著。
英文摘要 Abstract

In this study, accelerated carbonation equipment was used to increase the concrete specimen carbonation. The changes of air-entraining concrete inmechanics, physical character, electrical character, and microstructure were explored after carbonation accelerated under different water-cement ratio and curing conditions.These were determined through the tests of compression strength, bending strength, splitting strength, sorpvitity, water absorption, electric infiltration capacity, resistivity, ultrasonic wave propagation velocity measurement, MIP and phenolphthalein indicator measurement etc..

The results of investigation indicate the concrete compression strength, bending strength, tensile strength and splitting strength were raised. The water absorption in company with sorpvitity were decreased obviously. The resistivity and ultrasonic wave propagation velocity were increased due to electric infiltration capacity debased; and the average pore diameter was reduced relatively. According to the analysis of test variations, it revealed that concrete carbonation degree was apparent when the air-entraining admixture was applied, the specimen was under high water-cement ratio and exposed to ambient condition without curing.
論文目次 目錄

中文摘要 Ⅰ
英文摘要 Ⅱ
誌謝 Ⅲ
目錄 Ⅳ
表目錄 Ⅶ
圖目錄 IX
照片目錄 XIII

第一章 諸論-----------------------------------1
1-1 研究動機-------------------------------------1
1-2 研究目的與範圍-------------------------------2
1-3 研究流程-------------------------------------3

第二章 文獻回顧-------------------------------4
2-1 混凝土耐久性------------------------------4
2-2 輸氣混凝土--------------------------------6
2-2-1 卜特蘭水泥的水化機理-----------------------6
2-2-2 輸氣劑在混凝土中的作用機理------------------7
2-3 中性化的機理-----------------------------10
2-4 中性化速度-------------------------------12
2-5 混凝土的傳輸機理-------------------------14
2-5-1 混凝土的孔隙結構--------------------------14
2-5-2 混凝土的透水機理--------------------------14
2-5-3 電滲試驗----------------------------------16
2-5-4 電阻試驗----------------------------------17
2-5-5 超音波速量測------------------------------19

第三章 試驗規劃-------------------------------22
3-1 試驗變數---------------------------------22
3-2 試驗材料及試體製作------------------------26
3-2-1 材料分析----------------------------------26
3-2-2 試體規劃及製作-----------------------------33
3-3 試驗設備---------------------------------36
3-4 試驗項目、原理及方法----------------------40

第四章 試驗結果與分析-------------------------52
4-1 力學性質---------------------------------52
4-1-1 抗壓強度----------------------------------52
4-1-2 抗彎強度----------------------------------57
4-1-3 抗拉強度----------------------------------62
4-1-4 劈裂強度----------------------------------66

4-2 物理性質---------------------------------68
4-2-1 吸水速率----------------------------------68
4-2-2 吸水率------------------------------------73
4-3 電學性質---------------------------------79
4-3-1 電流滲透量-------------------------79
4-3-2 電阻值量測-------------------------83
4-3-3 超音波量測-------------------------87
4-4 微觀分析---------------------------------92
4-4-1 汞壓測孔隙分析----------------------92
4-4-2 酚試液測定法---------------------105

第五章 結論與建議----------------------------111
5-1 結論--------------------------------111
5-2 建議--------------------------------112

參考文獻---------------------------------------113
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