when concrete is installed it needs to be able to dry out, when moisture barriers are used the moisture cant escape down so it can be trapped inside. eventually it will stop with the efflor. but it may take a couple years..btw the ACI calls for the concrete to be low moisture with admix
On Tuesday, April 15, 2014 1:50 AM, Stephen Webb <stephen@newlifemarblerestoration.com> wrote:
BTW, I didn't do the work

n 4/14/2014 9:28 AM, Stephen Webb wrote:
> Greetings all, customer has a 7 month old concrete slab that been
> having an on going efflorescence issue. the slab was treated as follows
> 1. a product called glenium was added to concrete and a moisture
> barrier used
> 2. a "quick cure" curing agent  was applied
> 3. the slab was covered with masonite during construction
> 4. then ground, and a densifier installed and honed to 800grit
> 5.  then  stain proof installed
> 6. then months later 40sk was tried to stop efflorescence
>  the contractor has been monitoring the slab humidity (85-94%, air
> 60%) and has detected no change for several months. there is no
> moisture coming in that we can detect. Any comments would be appreciated
> Thanks
> Stephen
>
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