本論文針對鋼筋混凝土結構構件內部之混凝土材料強度、單/雙排鋼筋尺寸以及 鋼筋腐蝕程度進行一系列的實驗，其結論與建議如下所述:
8-1 結論
1. 以透地雷達電磁波的電磁性材料參數(電磁波波速、相對介電常數)與混凝土 1~28 天內之物理性質(含水量、抗壓強度)之實驗模型，建立兩者材料參數性質的相關 性後，將水灰比 0.4~0.7 混凝土之電磁性材料參數中的相對介電常數與設計強度 比值進行混凝土強度迴歸分析，可推測混凝土構件在1~28 天內之抗壓強度。
2. 本研究開發透地雷達電磁波量測混凝土相對介電常數/混凝土設計強度比值的推 測模型，所反映混凝土強度(1~28 天)變化量較大;若以超音波波速來推測混凝土 強度，則變化量較小，所能反映混凝土強度差異性較小，且超音波只能進行單點 或局部混凝土品質量測，而以透地雷達電磁波的εr/
( )
f'd 比值來量測混凝土品 質，則可進行整體混凝土構件斷面混凝土品質評估。3. 本研究以透地雷達能量寬帶的水平解析靈敏度與電磁波波傳行為，針對單一鋼筋 形狀特性，擷取倒 V 字形反射訊號特徵，以功率反射係數所行走路徑與鋼筋近 似圓形幾何關係，解析混凝土內含不同鋼筋尺寸大小/不同混凝土保護層厚度的 實驗分析結果與實際鋼筋尺寸的平均誤差為5%。
4. 本研究延續單一鋼筋尺寸分析原理，解析雙排鋼筋在不同間距與號數波傳行為，
藉此開發雙排鋼筋尺寸擷取方法，經由實驗比對與驗證後，成功界定出鋼筋間距 在 6cm~14cm可依循雙排鋼筋尺寸分析原理，間距大於 14cm 後，可採用單一鋼筋 尺寸分析原理進行混凝土構件內含單/雙排鋼筋尺寸的評估，而雙排鋼筋尺寸大 小/不同混凝土保護層厚度的實驗分析結果與實際鋼筋尺寸的平均誤差 5%。
5. 本研究開發透地雷達電磁波訊號特徵量測鋼筋尺寸技術是以電磁波於鋼筋界面繞 射行為與功率反射範圍進行分析，而磁感應法則是以磁場反射回來電壓改變量進 行疊加，兩者皆可分析鋼筋(深度、位置、尺寸)，但磁感應法對鋼筋尺寸靈敏性 較差，其準確率較低，而以電磁波訊號特徵量測鋼筋尺寸靈敏性較高，其準確率 較高。
6. 本研究以透地雷達電磁波入射於鋼筋腐蝕界面，在不同混凝土保護層厚度與腐蝕 程度下的電磁性材料特徵參數量測，同時量測電化學腐蝕電位與腐蝕電流密度，
進行混凝土內含鋼筋界面腐蝕物理現象的相關性比較，可判定電磁波的特徵參數 (反射電壓、對應特徵電流)等，在鋼筋腐蝕界面輕度、中度、嚴重腐蝕的範圍。
7. 本研究開發透地雷達電磁波特徵參數於鋼筋腐蝕界面量測技術，不須破壞混凝土 表面進行不同混凝土保護層深度下，鋼筋腐蝕度程度量測，可進行整體混凝土斷 面內鋼筋腐蝕的分佈;若以電化學方式進行量測，只能進行局部量測，且需局部 敲除混凝土表面至鋼筋上緣(屬於半破壞方式)，有此可知，以透地雷達鋼筋腐蝕 的施測效率與範圍較電化學腐蝕電位/電流法量測快速及簡便。
8. 本研究所研發之「數位化-透地雷達鋼筋混凝土構件健康檢測系統」之電磁波反 射訊號特徵參數，可建立不同水灰比混凝土強度推測公式，進行混凝土斷面整體 強度品質評估、由單/雙鋼筋尺寸分析方法，可快速分析混凝土內鋼筋尺寸、排 列等分佈狀態、鋼筋腐蝕界面程度判定模式，不需破壞混凝土表面以達成分析混 凝土內鋼筋界面腐蝕程度。由透地雷達反射訊號中，經數位化擷取電磁波特徵參 數後，可一次擷取多種參數，進行整體混凝土結構構件斷面品質的診斷與評估分 析。
8-2 建議
1. 若能進行混凝土內含單/雙/多排鋼筋混凝土試體進行 1~28 天內或實際混凝土構件 抗壓強度與相對介電常數資料的建立，將更符合實際鋼筋混凝土構件品質評估，
使此方法更適用於現地混凝土強度的推測與評估參考依據。
2. 目前多排鋼筋間距小於 7cm 內或鋼筋尺寸小於電磁波波長四分之一時，透地雷達 電磁波反射訊號特徵，無法分離雙排鋼筋的反射訊號。若能以更高頻透地雷達電 磁波或研發數位化訊號影像處理，提高透地雷達解析能力，使間距過小之鋼筋尺 寸得以進行分離與不同鋼筋尺寸分析模式推導。
3. 藉由透地雷達電磁波特徵參數，可定性與界面特徵範圍解析鋼筋界面腐蝕程度，
但還是無法定量表示腐蝕大小，若能建立電磁波入射鋼筋界面腐蝕中的電磁場物 理量特徵與電化學腐蝕電位與電流密度相關式，將可提高透地雷達電磁波特徵參 數量測鋼筋腐蝕的準確性。
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作者簡介 壹、基本資料
身 分 證 號
碼 F 1 2 4 1 8 5 9 0 8
Hua Lin Chen 中文姓名 林鎮華 英文姓名
（Last Name） （First Name） （Middle Name）
國籍 中華民國 性 別 ■男 □女 出生日期 1978 年04 月26 日 聯絡地址 231 台北縣新店市北新路二段五十九巷十一號一樓
就讀系所 中華大學土木與工程資訊學系
主要學歷
畢業學校 國別 科系所/主修學門 學位 起迄年月
中華大學 中華民國 土木工程學系 學士 88.9.-90.6.
中華大學 中華民國 土木工程學系 碩士 90.9.-93.6.
中華大學 中華民國 土木與工程資訊學系 博士 93.9.-99.7.
現職相關經歷
服務機關 服務部門 職位 起迄年月
現職:中華大學 土木與工程資訊學系 兼任研究助理 93.6.-迄今 經歷:中華大學 土木與工程資訊學系 非破壞檢測實驗課程
助教 93.9.-99.6.
經歷:中華大學 土木工程學系 土木工程學系網頁管
理員 93.9.-95.6.
專長學科相關經歷
1.非破壞性檢測
透地雷達、超音波、磁感應、腐蝕電位/
電流、反彈鎚
2.數位影像處理
Matlab、Photo~Shop、Photo~Impact、
COOL~3D 3.Ansys 分析
結構力學、動力、暫態、模態、挫屈、
熱傳、電磁分析
4.電腦辨公室軟體應用
MOS (Microsoft Office 2000 國際大師級 認證
5.網際網路軟體應用
Macromedia Studio Mx、PHP~4.0、
Apach~2.3
6.電腦軟/硬體應用
WIN(ME、2K、NT、XP)系列、LINUX 電腦軟、硬體設定、組裝、問題解決