pouring adjacent to pavers

[mdr]

Perhaps a little OT here, but might be relevant to some.

I'm pouring a footing/porch landing adjacent to an existing pavered driveway. I've got a lot of constraints and this seems to be the best solution, but I'm not sure how to handle the interface between the new concrete and the pavers.

Pavers are set in 2" of sand, installed on 4-6" of compacted baserock sitting on a geotextile. The edge pavers are set in 3" or so of mortar. The mortar often extends an 1" or so past the margin of the paver, "locking" it in place and resisting lateral forces.

I'd LIKE to pour up to the pavers. Is it reasonable to cut back the mortar to the paver, place a piece of isolation foam and then pour? Or should I move the whole pour away from the pavers/mortar, form the edge and fill the space with gravel? (This is how it is currently formed.)

Pics below show the pavers and mortar. The forms have been placed for a pour away from the pavers, and the space between was to be filled with gravel. As discussed above, I'd like to pour up to the pavers and remove that side of the form. (I recognize that the forms are incomplete and inadequately supported.)




Thanks.
Murray

 

[NUTTSGT]

I'd probably use something like this in the link to separate them.

https://www.menards.com/main/buildi...sion-joint/1831225/p-1444451014959-c-5642.htm

Granted, you don't have Menard's in Cali but HD or Lowes should be able to get something similar.

My concern would be stuff moving in the winter with freezing temps. Is that an issue for you ?

 

[Leaflessshadetree]

I'd pull up a row of pavers and put in a proper form. Remove the form and replace the pavers afterwards.
You can do what you propose with the foam or with rubber expansion joint. I've even seen duct tape and cardboard used to keep the concrete off the pavers.

 

[mdr]

Thanks Eric. Nor cal, no freezing. But clay soil, so movement due winter rains, summer dry season.

Yes, HD has that. My outstanding question is can I (do I need to) cut back the mortar splash that the edge pavers are bonded to in order to provide a smooth face at the concrete boundary.