Posted 3 Months, 1 Week ago DonaldM Senior Boarder Posts: 45   Can anyone direct me to some sites that discuss different concrete batch mixes and their expected PSI? Thanks William Hendry Custom Tile The administrator has disabled public write access. Posted 3 Months, 1 Week ago Woody- Senior Boarder Posts: 61   Heres a good starting point, with lots of links somewhere in there The administrator has disabled public write access.