What is the poissons ratio of the concrete?
between .15 and .20
Why does concrete mix with low water cement ratio resulted in hardened concrete having higher strength than those with high water cement ratio?
simply workabilty is the w/c ratio in concrete. more the w/c ratio higher the workability and vice versa. and it is true that excess amount of w/c ratio doesnt give proper strength. so workable concrete i.e, concrete with proper w/c is must for good strength. *note: not considering the mix of concrete.