If 4 liter of water is addedIn 1 cum of freshly mixed concrete then,

1). Slump value will increased by 25mm

2).Compressive strength of concrete will decrease by 1.5 to 2 N/mm2

3).Shrinkage potential will be increased by 10%

4).25% of cement bag will be wasted

If temperature of freshly mixed concrete is increased by 1% then,

1). Slump will be equal to addition of 4 liter of water

2). Air content will be decreased by 1%

3).Compressive      strength of concrete will decrease by 1 N/mm2 to 1.5 N/mm2