Factor affecting workability: 1. Large size aggregates increase the workability due to lesser surface area, as finer aggregates composition means larger surface area exposure for reaction i.e. hydration of cement, and thus reduced workability. 2. The higher value of the water-cement ratio would increase the workability of the concrete but may reduce the compressive strength of the mix. Hence, an increase in water content must be accompanied by an increase in cement content. 3. Angular and rough aggregates reduce the workability of the concrete as rough texture allows good bonding among the aggregate which comes at the cost of workability to some extent.