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.
RE: 3000 psi or 5000 psi concrete. 17 Sep 07 16:06. JKW05 hits on a good point - keep your water/cement ratio low - with low resulting slumps. Too much water in mixes is really the prime culprit in shrinkage cracks.