Concrete block rebar
The basement wall in question is 60+ feet long and entirely below ground. I realize that one traditional solution to a cracking and bowing wall would be to install rebar inside every 3rd or 4th block core and then fill the cores with concrete. This would be kind of a hybrid between traditional technology and more modern approaches such as using carbon fiber straps epoxied to the interior of the wall. I considered using a portland cement-based grout to attach the rebar, but thought an epoxy-based cement might provide a stronger and more flexible adhesive bond between the rebar and the concrete block. RE: Use of rebar to reinforce existing concrete block wall Ron (Structural) 13 Jul 19 22:46 The bottom could be inserted into a hole drilled in the floor slab. If additional anchoring were needed, the top of the rebar could be bent and inserted into a hole drilled into the top block, or is could be attached with some kind of bracket and lag-bolted to the sill or a floor joist. It would require less cutting/grinding than with carbon fiber straps The homeowner could install this system with an angle grinder and a few diamond cutting blades. This might be very beneficial if there were significant stair-step cracking of mortar joints. It would serve to lock the courses of block together. Significantly lower cost than using carbon fiber straps
If feasible, this method would provide a number of benefits: The rebar would be bedded in a continuous bead of epoxy or other suitable adhesive and would be flush with the inside surface of the block. Each groove would be wide and deep enough to accommodate a #4 or #5 length of steel rebar. What I am suggesting is cutting vertical v-shaped grooves in the inside face of the block wall, floor to ceiling at regular intervals maybe every 2 1/2 to 3 feet. Has anyone thought about using steel rebar on the inside of a concrete basement block wall to reinforce it and prevent further bowing and cracking?