This compression system is a very handy invention, especially for Web users, because it lets you reduce the overall number of bits and bytes in a file so it can be transmitted faster over slower Internet connections, or take up less space on a disk.
Concrete hardens to 600PSI (Minimum) after 24 hours. This means that 5 three grown men could all stand on a pogo stick (if that were possible) who's base covers 1 square inch without harming the concrete. You walking with shoes on exert about 10 PSI, well below anything that could damage the new pour.
If yours is sanded, you can walk on it after 5 hours. Be very careful not to get too much traffic on the floor until the grout is sealed with a suitable sealer, typically 48 hours after curing. Troy Â· 5 years ago.