Concrete for pumping
pump or the pipeline. For we l l - rounded aggregates this maximum s i z e can be increased to 40 perc e n t . He n c e a 1 1/2 inch gra v el aggre g a t e could be used in a pumping system with four-inch openings. In pra c - t i c e howe ve r pumping concre t e with 1 1/2-inch aggregate thro u …
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