中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/46294
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 78852/78852 (100%)
造訪人次 : 38253302      線上人數 : 671
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋


    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/46294


    題名: 鹼-矽膠體的形貌與組成;Morphology and composition of alkali–silica gel)
    作者: 官毅明;I-Ming Guan
    貢獻者: 土木工程研究所
    關鍵詞: 鹼-骨材反應;掃描式電子顯微鏡;微區元素分析;X光粉末繞射儀;鹼-矽膠體;ASR gel;Alkali-Aggregate Reaction;Petrography;EDX;SEM;X-ray diffraction
    日期: 2011-01-04
    上傳時間: 2011-06-04 14:54:30 (UTC+8)
    摘要: 摘要 本文利用掃描式電子顯微鏡(SEM)、微區元素分析(EDS)及X光粉末繞射儀(XRD)等儀器進鹼-骨材反應生成物(鹼-矽膠體)進行一系列的微觀分析,探討鹼-矽膠體於形貌、元素組成及化學組成的特性。本研究所觀察之鹼-矽膠體主要生成於混凝土角柱及砂漿棒表面、裂縫以及開裂面,而混凝土試體使用之骨材來源為國內花東沿岸及南部里港溪,經檢測確定具有鹼-骨材反應危害性、並持續置放於不同的養治環境下,外觀產生顯著開裂且生成白色膠體。經由微觀分析結果發現,隨著控制變因不同,鹼-矽膠體具有不同的結晶形貌、其組成亦有不同特徵性,利用此種特性建立一套鑑定鹼-矽膠體之準則、作為輔助確認混凝土試體具有鹼-骨材反應危害性的另一佐證,並提供後續相關研究之應用。 ABSTRACT This research used aggregates from the seacoast of Hualien and Taitung the South Ligang River in Taiwan to make concrete prisms and mortar bars. And first tested aggregates to learn that they indeed had the hazardous of alkali-silica reaction. Then the concrete prisms and mortar bars were placed in several curing conditions. It was observed that cracks and some white gel, which was called ASR gel, was produced under the research environment. The ASR gel was seen within the surface, cracks, and surface grooves of the samples. The crystalline alkali-silica reaction product (ASR gel) is characterized by scanning electron microscope(SEM), quantitative X-ray energy dispersive spectrometry(EDX) and X-ray diffraction(XRD). Based on the results of the microscopic analysis, the research built the correlation of composition and morphology, and created criteria for the finding of the ASR gel. Overall, the research serves as an affirmation of Alkali-Aggregate Reaction and a follow-up study of its application.
    顯示於類別:[土木工程研究所] 博碩士論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML1000檢視/開啟


    在NCUIR中所有的資料項目都受到原著作權保護.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明