Line Cost. New flooring: install 2,500 sq.ft. of mid-grade 5/8 x 4-1/2 wide vinyl plank flooring and 500 linear feet of matching baseboard. $2.49. per sq.ft.
The drying shrinkage of concrete is analogous to the mechanism of drying of timber specimen. The loss of free water contained in hardened concrete, does not result in any appreciable dimension change. It is the loss of water held in gel pores that causes the change in the volume.
For concretes of equal cement content, air content, and slump, the 28-day strength of a water-reduced. concrete containing a water reducer can be 10% to 25%. greater than concrete without the admixture. Despite re-. duction in water content, water-reducing admixtures may. cause increases in drying shrinkage.