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鋼邊止水帶高性能水下混凝土

日期:2011-11-07 15:54 關注:

    本工程鋼筋籠特密,對混凝土原材料及其各種性能要求較高,除應具備一般水下混基本性能外,在混凝土配合比設計時充分考慮了混凝土的和易性和流動性,施工時混凝度控制在20~22cm,擴散度在35~40cm,坍落度保持在15cm以上時間不少于1.5小時。
十、結束語
    潤揚大橋北錨碇基坑已于2002年4月19日開挖到底,42個槽段墻面平整,混凝土防漏情況良好,接縫無有害缺陷,經超深波檢測,混凝土質量良好。北錨碇地連墻克服。隋況復雜、施工技術難度大、工作面狹窄、施工工序多、施工干擾大等困難,確保了工期,橋梁的大型基礎工程施工提供了寶貴經驗。

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