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細石混凝土泵骨料的選擇與要求
時間:2019/7/31 14:28:13 作者:邦力機械來源:網上收集

如何選擇細石混凝土泵車骨料

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泵送混凝土的質量對坍落度水灰比還有粗細骨料的選擇要求比較的嚴格,那么他對骨料與砂率的選擇是什么呢,在選擇骨料時一定要求有害的雜質含量最低,而自身的強度要滿足要求,選擇粗細骨料時他的最大粒徑度主要需要他滿足以下的一些條件,選擇的骨料不能超過鋼筋的最小凈距的四分之三,也不能超過最小結構面變長的四分之一,他的最大粒徑度主要還是需要參考輸送管的內徑,粒徑太大,會導致輸送管的堵塞,影響泵送的順利進行,所以一般來泵送混凝土骨料的最大粒度不可以超過泵管內徑的三分之一,在泵送細石混凝土時,砂漿的作用不僅可以填滿石子間的空隙,而且可以起到潤滑的作用,所以在泵送混凝土時,需要配比一個合適的砂律,不但減少了骨料內的摩擦而且還降低了塑料黏度,還提高他的保稅性能,讓混凝土達到最好的泵送效率。

細石混凝土泵骨料的選擇與要求

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細石混凝土泵骨料的操作步驟

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