Latest Discussions : Miscellaneous

LOU ROSELLI

07:25PM | 02/28/99
I HAVE A FIVE YEAR OLD CONCRETE WALKWAY THAT THE LAST TWO YEARS ONE SLAB HAS BEEN CHIPPING AWAY. THIS WINTER I HAD TO USE CALCIUM/SALT FOR THE BAD ICE STORMS WE HAD.
THIS ONE SLAB HAS TURNED COMPLETELY SOFT,AS IF IT NEVER DRIED. YOU CAN ACTUALLY SHOVEL IT AWAY. I NEED TO KNOW IF I CAN GO OVER IT
WITH A VYNAL PATCH/MORTER, OR DOES IT HAVE TO COME UP. ALSO WAS THINKING OF DOING PAVERS, CAN I GO DIRECTLY OVER THE OTHER SLABS THAT ARE STILL IN GOOD SHAPE, OR DOES THAT HAVE TO COME UP ALSO. DOES ANYONE HAVE ANY IDEAS.

jorgeb

05:08AM | 03/07/99
First, you should NEVER apply any type of deicer over concrete less than 3-5 years old and that's with concrete that has proper air entrainment (e.g.- air spaces 5-7%). If you mixed the concrete yourself, was it too wet or did it dry too quickly?
Repairs-1. The soft panel needs to come up.
2-If you are doing pavers, what happens when the walk ends up where its going? Is it going to make an small setp or a large one. Applying pavers over concrete changes the height of the walk by at least 2.5". If this is not a problem, pavers can be applied with either a sand setting base (damaged section needs to be replaced first so the base is consitent) or prefered method of application is with a paver adhesive providing the existing concrete walkway is smoth enough not to impact the finish of the new paver walkway.


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