博碩士論文 92322052 詳細資訊


姓名 馬宗佑(Chung-Yo Mar)  查詢紙本館藏   畢業系所 土木工程學系
論文名稱 探討磁化水之霍爾效應對於砂漿抗壓強度之關係
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摘要(中) 摘要
利用磁化水拌和混凝土存在一大問題那就是成效上的 “不穩定”,加上目前為止沒有測定磁化水磁化程度的儀器及設備,因此無法得知磁化水的性質和磁化程度,故混凝土品質難以控制。有鑑於此本研究便利用磁化過程中所產生的霍爾電壓,作為反應抗壓強度變化的指標,於是致力於研究磁化水霍爾電壓的原理加以穩定,並分析霍爾電壓與水泥砂漿試體抗壓強度之間的關係,實驗過程中的電極採用MHD發電器的電極原理,以求能穩定量測到霍爾電壓,並可探討電極大小對抗壓強度的影響。
研究成果發現以銅箔膠帶所製作的1cm長的電極可以量測到穩定的霍爾電壓。而以大電極管所磁化的磁化水,拌製出來的水泥砂漿抗壓強度,可得到穩定的抗壓強度曲線,由實驗數據中得知抗壓強度依循著磁場強度增加而增加,磁場0.96T的抗壓強度>0.84T>0.65T>0.46T。另外其抗壓強度與霍爾電壓的關係,在磁化水的流速小於220m/min時,抗壓強度與霍爾電壓呈正比關係,大於220m/min時呈反比關係。各種不同長度大小的磁化電極,其水泥砂漿抗壓強度數據中,可推論出霍爾效應有沒有發揮至極致,將影響磁化水增強砂漿抗壓強度之穩定性。
摘要(英) Abstract
Due to the instability of the use of mixing magnetic water with concrete and the lack of any equipment or device for measuring the level of magnetization of magnetic water, the quality and level of magnetization of magnetic water remains unknown, and it is therefore hard to control the quality of concrete. Therefore, this study utilizes Hall voltage produced in the process of magnetization as the indication of reacting to the changes of compressive strength, and is devoted to investigating the principle of Hall voltage of magnetic water and stabilizing it. Also, the relation between compressive strength of mortar and Hall voltage is analyzed by applying the electrode principle of MHD generator in the process of the experiment so as to acquire stable Hall voltage and investigate the impact of level of electrode on compressive strength.
The result of the study indicates that stable Hall voltage can be measured by a 1cm electrode made of copper foil. Moreover, a stable compressive strength curve of compressive strength of mortar mixed by the magnetic water magnetized by the electrode (1cm) can be acquired. The compressive strength increases as the magnetic-field intensity increases according to the experiment data. The compressive strengths of magnetic field: 0.96T>0.84T>0.65T>0.46T. In terms of the relation between compressive strength and Hall voltage, both of them are in a direct proportion as the flow velocity of magnetic water is less than 200m/min. On the contrary, they are in inverse proportion as the velocity is more than 200m/min. Among magnetized electrodes in various lengths and compressive strengths of mortar, based on the observations of the figures, it can be concluded whether Hall Effect has been employed to the utmost will influence the stability of compressive strength of mortar improved by magnetic water.
關鍵字(中) ★ 砂漿抗壓強度
★ 霍爾電壓
★ 磁化水
關鍵字(英) ★ Compressive strength of mortar
★ Magnetic water
★ Hall voltage
論文目次 第一章 緒論 1
1.1研究源起 1
1.2研究目的 2
1.3研究的內容 2
第二章 文獻回顧 4
2.1水的性質與行為 4
2.1.1水分子架構 4
2.1.2水分子的極性與偶極矩 5
2.1.3分子間的吸引力 5
2.1.4氫鍵 5
2.1.5水的動態結構 6
2.1.6水的溶解度、表面張力與粘度 8
2.2水在通過磁場時的反應 9
2.3 物質的磁性反應 9
2.3.1水的磁化 11
2.3.2核磁共振 13
2.3.3 磁共振影像掃描 14
2.4磁化水的電磁效應 15
2.4.1法拉第電磁感應 16
2.4.2佛來明右手定則 16
2.4.3勞倫茲力 17
2.4.4勞倫茲力與磁化水的關係 17
2.4.5霍爾效應 18
2.4.6霍爾電壓與磁化水 22
2.4.7磁化水的電磁效應 25
2.4.8磁流動力發電器 29
2.4.9電磁式流量計測流 33
2.4.10分割電極與磁化水 35
2.5 磁化設備 40
2.5.1磁的基本概念 41
2.5.2磁鐵位置 42
2.5.3磁極配置 44
2.5.4水流與磁場夾角 46
2.5.5磁鐵的設置 47
2.5.6管線材質的影響 48
2.5.7電極材質的影響 50
2.5.8電磁鐵與永久磁鐵的差異 52
2.6磁化水之成效 53
2.6.1水垢的抑制 53
2.6.2水質的改變 58
2.6.3電雙層及界面電位的改變 62
2.6.4水分子鍵結角度 67
2.6.5水的記憶性 68
2.6.6水分子團大小的改變 70
2.7磁化水對水泥混凝土之影響 74
2.7.1 台灣之研究現況 75
2.7.2 大陸之使用現況 77
2.7.4磁化水改變水泥砂漿抗壓強度的機理 79
2.7.3水中加入物質通過磁場後拌和水泥砂漿 80
第三章 試驗器材與研究方法 83
3.1 實驗材料 83
3.2 實驗設備 84
3.2.1磁化裝置-磁鐵 84
3.2.2磁化裝置-電極 93
3.2.3電極製作材料 102
3.2.4磁化裝置系統 103
3.2.5量測用器材儀器 105
3.2.6抗壓試體拌合設備 108
3.3 研究流程與方法 109
3.3.1研究流程圖 109
3.3.2增強階段 111
3.3.3穩定階段 113
3.3.4整合階段 119
3.3.5水泥砂漿抗壓試體製作階段 121
第四章 結果與分析 129
4.1穩定霍爾電壓 129
4.1.1電子式穩定電壓 129
4.1.2循環法穩定電壓 131
4.1.3改變電極型式及材料來穩定霍爾電壓 132
4.2水泥砂漿試體抗壓試驗 136
4.2.1階段性試驗 136
4.2.2決定管子型式 138
4.2.3探討各電極型式 140
4.2.4 抗壓強度與霍爾電壓之關係 158
4.2.5探討磁化效應殘留時間 167
4.2.6探討流速與流量 168
4.2.7探討磁場間距 170
4.2.8探討水中物質 171
第五章 結論與建議 176
5.1結論 176
5.2 建議 177
參考文獻 179
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指導教授 李釗(Chau Lee) 審核日期 2005-7-12
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