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    透輝石粉的火山灰反應特性

    崔孝煒 倪文 耿碧瑤 王佳佳 仇夏杰

    崔孝煒, 倪文, 耿碧瑤, 王佳佳, 仇夏杰. 透輝石粉的火山灰反應特性[J]. 工程科學學報, 2018, 40(6): 658-664. doi: 10.13374/j.issn2095-9389.2018.06.002
    引用本文: 崔孝煒, 倪文, 耿碧瑤, 王佳佳, 仇夏杰. 透輝石粉的火山灰反應特性[J]. 工程科學學報, 2018, 40(6): 658-664. doi: 10.13374/j.issn2095-9389.2018.06.002
    CUI Xiao-wei, NI Wen, GENG Bi-yao, WANG Jia-jia, QIU Xia-jie. Ash reactivity characteristics of diopside powder[J]. Chinese Journal of Engineering, 2018, 40(6): 658-664. doi: 10.13374/j.issn2095-9389.2018.06.002
    Citation: CUI Xiao-wei, NI Wen, GENG Bi-yao, WANG Jia-jia, QIU Xia-jie. Ash reactivity characteristics of diopside powder[J]. Chinese Journal of Engineering, 2018, 40(6): 658-664. doi: 10.13374/j.issn2095-9389.2018.06.002

    透輝石粉的火山灰反應特性

    doi: 10.13374/j.issn2095-9389.2018.06.002
    基金項目: 

    國家高技術研究發展計劃資助項目(2012AA062405)

    商洛學院自然科學研究資助項目(17SKY026)

    陜西省自然科學基金資助項目(2017JM5125)

    詳細信息
    • 中圖分類號: TU528

    Ash reactivity characteristics of diopside powder

    • 摘要: 透輝石作為矽卡巖型尾礦中的重要組成部分,研究其火山灰反應活性對于該類型尾礦的綜合利用具有重要意義,但是目前還未見到相關報道.以透輝石、天然石膏和氫氧化鈣為原料制備凈漿試塊,研究了磨細透輝石的火山灰反應活性,并利用X射線衍射、掃描電鏡、傅里葉紅外光譜、差示掃描量熱法和核磁共振對凈漿試塊的水化產物進行分析,為初步判斷矽卡巖型尾礦是否具有火山灰反應活性提供重要依據.結果表明,磨細的透輝石凈漿試塊抗壓強度在3、7和28 d齡期時分別為9.83、12.79和18.87 MPa,顯示出磨細的透輝石具有火山灰反應活性.磨細透輝石的水化產物以C-S-H凝膠為主.核磁共振結果顯示,隨著水化反應的不斷加深,處于Q2結構狀態的硅原子比例有所減少,生成的C-S-H凝膠的鋁/硅比低于原始結構的透輝石.隨著養護齡期的增加,僅有少量石膏參與反應,Ca(OH)2會被大量消耗,水化產物逐漸增多.未參與反應的石膏顆粒起到填充作用,也有助于促進體系強度的持續增長.

       

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    出版歷程
    • 收稿日期:  2017-10-09

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