For 2.5m3 of paving mix concrete the following quantities are:
40 bags of cement (nominal 25 kg)
1.0m3 damp sand
1.75m3 coarse aggregate or 2.5m3 all-in aggregate – ballast.
These quantities do not include any allowance for wastage. When purchasing materials, however, it is recommended that the quantities of aggregates are rounded up to the nearest half or full cubic metre and an extra 10% of cement is added to allow for wastage.
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