Weigh-Batching of Aggregates:

In weigh batching materials are measured by weight in kilogram. It gives more accuracy in measuring the quantity of ingredients as compared to volume batching. Weigh batching does not have uncertainties with regard to bulking or non-uniform filling of gauge box. Therefore, the suitable adjustment in the quantity of water should be made according to the moisture content of aggregates. The weigh batching is recommended for major or important works. In mix design, we obtain the quantities of different ingredients by weight for one cubic meter of concrete and the same may be conveniently taken for weigh batching.

Using any conventional weighing system such as, spring balance, platform weighing machine or automatic weighing machines, one can perform weigh batching. Now-a-days electrically operated automatic batching plants are also available in which one can feed the desired information for the quantities of different ingredients required in one batch and the same are measured automatically. These kinds of plants are more appropriate for production of ready mix concrete or at the factories of pre-cast concrete in bulk.