Bonding New Concrete To Old Concrete With SBR Latex

From www.swimmingpoolsteve.com/pag... - SBR Latex (Styrene Butadiene Resin) is one of the best admixtures for creating a bonding slurry for bonding new concrete to old concrete. While SBR latex has the strongest potential, it also has the weaskest UV resistance. Similar to latex fortifier, SBR would be ideal for wet applications, chemical exposure and freeze and thaw conditions.
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[@bobmariano3731]

I am repairing some spalling below & outside my garage doors , what type of slurry do you recommend that I use & can I put an epoxy finish on it later ? ? Love your expertise & videos ! 👍

[@petercdmclean]

I'm interested in an answer for this too!

[@GreybeardGames]

Hey Steve, your videos are helpful. I will be pouring 2” of fiber reinforced concrete over some very old concrete steps. SBR seems the way to go. What I’d like to know, what is the approximate working time I have to pour the concrete once the slurry has been applied?

[@Swimmingpoolsteve]

Minutes. Less in the sun.

[@parthakumar4359]

Is there any way to use it when the substrate is exposed to sun?

[@TheDanfruhauf]

MAJOR QUESTION - How do i bond two pieces of precast concrete together to make a seal? Example - An existing precast slab and a precast 8' diamater solid ring? Would be for backyard DIY small cement pool. Thanks!

[@Swimmingpoolsteve]

That is an unusual application, but concrete urethane for sure would be the one you want. It is a strong and potentially waterproof bond with the right product but more importantly it is flexible.

[@sean550]

Hi I just poured 14 inches of concrete on top of old concrete....Was new foundation for a extension..I just housed a it down to clean it and poured some svr on top it just before new concrete ..Also put mesh steel 1/2 inch over old concrete ...hope it will be OK...pitting I didn't see this first .. hope mine will be okay as thier is 14 inches on new concrete on top of old concrete..

[@Swimmingpoolsteve]

The 14" of concrete weight will help to hold it in place. Pinning steel is the most important for structural additions. Bonding agent is for a less pronounced cold joint, but not structural enough to hold 14 inches of concrete

[@sean550]

@@Swimmingpoolsteve thanks sean