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BSR40-14-61 HIGH-RISE BUILDING MORTAR PUMP Relationship between the cement content and aggregate varieties: The same size grading of pebble and gravel in comparison, the latter need a larger amount of cement, Compared with natural sand, the artificial sand needs more cements. For lightweight...

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BSR40-14-61 HIGH-RISE BUILDING MORTAR PUMP

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Relationship between the cement content and aggregate varieties: The same size grading of pebble and gravel in comparison, the latter need a larger amount of cement, Compared with natural sand, the artificial sand needs more cements. For lightweight aggregate and porous aggregate, due to the features of high pressure water absorption, low pressure water discharge, it is easy to make concrete pumping poor pulp, dry and bleeding, so it is necessary to increase the amount of cement. Therefore, the aggregate size is much smaller; the corresponding cement dosage should be increased. Due to the aggregate size is small, its surface area increases, and the wrapped slurry will be increased. Oversized aggregate will destroy the continuity of the concrete, it is also difficult for the slurry to make these aggregate fully inclusive, and so the amount of cement can not be too small.

 


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