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    蘇州混凝土水泥制品研究院有限公司

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    發布時間:2020-01-06 00:00:00
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    高溫飽和蒸汽環境下管樁混凝土的堿骨料反應研究
    Study on the Alkali Aggregate Reaction of Concrete for Piles under High Temperature Saturated Steam Environment
    2019年第11期
    堿骨料反應;膨脹率;白云石;硅灰;養護
    Alkali aggregate reaction; Expansion rate; Dolomite; Silica fume; Curing
    2019年第11期
    10.19761/j.1000-4637.2019.11.033.03
    明廷洪1,余曉文1,滕耀華1,朱躍華2,楊潤忠2
    1.廣東三和管樁股份有限公司,中山 528400;2.山東省水泥質量監督檢驗站,濟南 250000

    明廷洪1,余曉文1,滕耀華1,朱躍華2,楊潤忠2

    余洪方,鈕如嵩.國內預應力鋼筒混凝土管發展面臨問題的幾點思考與對策[J].混凝土與水泥制品,2019(11):30-32.

    YU H F,NIU R S.Thoughts and Countermeasures on Problems Faced by the Development of Prestressed Concrete Cylinder Pipes In China[J].China Concrete and Cement Products,2019(11):30-32.

    瀏覽量:
    1000
    摘 要:從堿骨料反應的定義、分類、條件、機理、預防措施等方面介紹了堿骨料反應的原理。利用白云巖制作了兩組膠砂試件,一組試件膠材采用純水泥,另一組摻入10%的硅灰等量替代水泥,并在水泥標準養護箱中養護24 h,脫模后在常溫蒸汽中養護6 h,再到高溫蒸壓養護8 h。通過骨料堿活性試驗方法中的評定方式對結果進行評定。試驗結果表明,堿骨料反應在高溫環境下可快速發生,且硅灰摻入量為10%時,能夠有效抑制堿骨料反應。 Abstract: The definition and classification of alkali aggregate reaction, reaction conditions, mechanism and preventive measures were introduced. Two groups of mortar specimens were made from dolomite. One group was made of pure cement. The other group was mixed with 10% silica fume to replace cement. The cement was maintained in standard curing box for 24 h. After demoulding, it was maintained in normal temperature steam for 6 h, and then in high temperature steam for 8 h. The results were evaluated by the evaluation method of the alkali activity test of aggregate. The results show that the alkali aggregate reaction can occur quickly under high temperature and the alkali aggregate reaction can be effectively inhibited by adding 10% silica fume.
    英文名 : Study on the Alkali Aggregate Reaction of Concrete for Piles under High Temperature Saturated Steam Environment
    刊期 : 2019年第11期
    關鍵詞 : 堿骨料反應;膨脹率;白云石;硅灰;養護
    Key words : Alkali aggregate reaction; Expansion rate; Dolomite; Silica fume; Curing
    刊期 : 2019年第11期
    DOI : 10.19761/j.1000-4637.2019.11.033.03
    文章編號 :
    基金項目 :
    作者 : 明廷洪1,余曉文1,滕耀華1,朱躍華2,楊潤忠2
    單位 : 1.廣東三和管樁股份有限公司,中山 528400;2.山東省水泥質量監督檢驗站,濟南 250000

    明廷洪1,余曉文1,滕耀華1,朱躍華2,楊潤忠2

    余洪方,鈕如嵩.國內預應力鋼筒混凝土管發展面臨問題的幾點思考與對策[J].混凝土與水泥制品,2019(11):30-32.

    YU H F,NIU R S.Thoughts and Countermeasures on Problems Faced by the Development of Prestressed Concrete Cylinder Pipes In China[J].China Concrete and Cement Products,2019(11):30-32.

    摘要
    參數
    結論
    參考文獻
    引用本文

    摘  要:從堿骨料反應的定義、分類、條件、機理、預防措施等方面介紹了堿骨料反應的原理。利用白云巖制作了兩組膠砂試件,一組試件膠材采用純水泥,另一組摻入10%的硅灰等量替代水泥,并在水泥標準養護箱中養護24 h,脫模后在常溫蒸汽中養護6 h,再到高溫蒸壓養護8 h。通過骨料堿活性試驗方法中的評定方式對結果進行評定。試驗結果表明,堿骨料反應在高溫環境下可快速發生,且硅灰摻入量為10%時,能夠有效抑制堿骨料反應。
    Abstract: The definition and classification of alkali aggregate reaction, reaction conditions, mechanism and preventive measures were introduced. Two groups of mortar specimens were made from dolomite. One group was made of pure cement. The other group was mixed with 10% silica fume to replace cement. The cement was maintained in standard curing box for 24 h. After demoulding, it was maintained in normal temperature steam for 6 h, and then in high temperature steam for 8 h. The results were evaluated by the evaluation method of the alkali activity test of aggregate. The results show that the alkali aggregate reaction can occur quickly under high temperature and the alkali aggregate reaction can be effectively inhibited by adding 10% silica fume.

    關鍵詞:
    堿骨料反應;膨脹率;白云石;硅灰;養護
    掃二維碼用手機看
    未找到相應參數組,請于后臺屬性模板中添加

    (1)堿骨料反應在特殊環境和特殊工藝情況下可快速發生。
    (2)硅灰等混合材對堿骨料反應有明顯的抑制作用。

     

    余洪方,鈕如嵩.國內預應力鋼筒混凝土管發展面臨問題的幾點思考與對策[J].混凝土與水泥制品,2019(11):30-32.

    YU H F,NIU R S.Thoughts and Countermeasures on Problems Faced by the Development of Prestressed Concrete Cylinder Pipes In China[J].China Concrete and Cement Products,2019(11):30-32.

     

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