Repair concrete expansion joint
#1
10-14-14, 09:05 AM
Repair concrete expansion joint
concrete driveway has expansion joint where it meets garage floor. Expansion joint needs to be replaced. Do I use the type of fibre expansion joint or is there a better way?
#2
10-15-14, 03:55 AM
better way - remove exp jnt, install closed-cell backer rod, then seal per directions on sealant tube,,, we use either 100% silicone OR NP 1 ( more color options ) but all you'll find @ apron/vest stores is gray,,, sealant should NOT come in contact w/tires !
#6
10-16-14, 08:36 AM
i wouldn't especially where there's movement of conc either from freeze/thaw or HOT temps during the day & cool 2 nite,,, conc changes dimension in response to temps,,, sand may be forced upward by expanding conc thereby risking sealant's adhesion - not a good thing - we'd leave empty space instead but its your house,,, IF you absolutely positively have to fill that space, use vermiculite 
#8
10-18-14, 03:11 AM
good man ! ( this is just ' filler ' as the original congratulatory phrase was too short to suit forum rqmts ) [ now twiddling thumbs awaiting for this insane ' time rqd to repost ' is up ]btw, sand is NOT a compressible - that's why its unacceptable !
Basically, it is 4 inch PVC that is 2 feet long. I filled it with concrete and at the top is a little metal eyelet lag screw.
This part pulled out of the concrete (before I ever used it). Im not sure why, maybe I added too much water to the concrete.
But now that it's loose is there any way to fix it? Perhaps some sort of bonding agent? I don't need the weight of the concrete for such a small volume, but it's function is to hold the tent down, so if it did get windy the screw would pull up.
Thank you.