English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 81025/81025 (100%)
造訪人次 : 46014533      線上人數 : 593
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/987654321/73786


    題名: 電弧爐爐碴經安定化處理製成混凝土製品之研究
    作者: 闕立恩;CHUEH, LI-EN
    貢獻者: 土木工程學系
    關鍵詞: 爐碴細粒料;鹼活化技術;Slag fine aggregate;alkali activation technology
    日期: 2017-07-28
    上傳時間: 2017-10-27 12:16:44 (UTC+8)
    出版者: 國立中央大學
    摘要: 爐碴細粒料為電弧爐煉鋼之副產品,爐碴細粒料經過前置處理後則在某些情況下能取代天然細粒料使用本研究將爐碴粒料、水淬爐石粉、氫氧化鈉溶液及矽酸鈉溶液(水玻璃)激發爐碴膠結活性,一方面探討鹼活化爐石粉膠結材料在不同含鹼當量、鹼模數比及水膠比下,對新拌及硬固性質之影響,本研究參考ASTM C1260之養護環境,將使用爐碴粒料之試體浸泡於80℃濃度1N的NaOH溶液中,持續14天後取出試體並量測其膨脹量,最後利用較佳鹼活化配比製作高壓混凝土磚,探討鹼活化技術隊再利用產品之成效。
    試驗結果顯示:(1)鹼活化砂漿之凝結時間會隨著含鹼當量增加而縮短,提高鹼模數比則可增加漿體之流動性;(2)使用爐碴細粒料之鹼活化砂漿於含鹼當量5%及鹼模數比0.75時,抗壓強度可優於水泥砂漿之抗壓強度;而提高鹼活化劑濃度對砂漿之抗壓強度發展越好;(3)利用鹼活化技術可使浸泡於80℃濃度1N的NaOH溶液中之養護環境下有抑制膨脹的效果;(4)使用爐碴粒料製成混凝土磚使用爐碴粒料時含鹼當量6%及鹼模數比1.75時,符合CNS 13295 規範C級磚。
    ;Slag fine aggregates are by-products of electric arc furnace steelmaking. After the slag fine aggregates are pre-treated, they can replace natural fine aggregates in some cases. In this study, the researcher used slag aggregates, water quenched stove powder, sodium hydroxide solution, and sodium silicate solution (water glass) to activate the slag cementation activity. The objective was to explore the effects that the alkali activated furnace powder cementing material have on the new mix and the hardening properties under different alkali equivalent volumes, alkali modulus ratios, and water-cement ratios. In this study, the researcher referred to the curing environment of ASTM C1260 to soak the slag aggregate specimen in 80 ℃ 1N concentration NaOH solution. After 14 days, the researcher removed the test specimen and measured the amount of expansion. Finally, the researcher used the preferred alkali activation ratio to produce high-pressure concrete bricks and investigate the performances of the alkali activation technology for recycled products.
    The study results indicated that: (1) The condensation time of alkali activated mortar would shorten as the alkali equivalent volume is increased. (2) When the alkali activated mortar of the slag fine aggregates has the alkali equivalent volume of 5% and alkali modulus ratio of 0.75, the compressive strength is greater than the cement mortar; the higher the alkali activator concentration, the better the compressive strength development for the mortar. (3) The alkali activation technology can have an expansion suppressing effect for the specimen soaked in the 80 ℃ 1N concentration NaOH solution. (4) When slag aggregates are used to make concrete bricks, the bricks would achieve CNS 13295 specification C-grade compliant if the alkali equivalent volume is 6% and the alkali modulus ratio is 1.75.
    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.html0KbHTML201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