Question

list out the effects of too  much mixing of water in concrete?

Answer 1

Effect of High water content on concrete

The effect of mixing too much water will result in higher water-cement ration which will reduce the strength of concrete. Also higher water content may cause bleeding of concrete, though the concrete may become more workable for labors but weaker concrete is of no use.

 

Also see:

Properties of Hardened Concrete | Fresh Concrete Properties | Concrete Technology

Answer 2

Too much water can also cause corrosion of steel reinforcement in concrete....