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FOR DECADES Mudjacking was the only remedy, short of replacement, for restoring concrete to its original pour height.
A pattern of holes of approximately 1 1/2" - 2 1/2" in diameter are drilled through the surface
of the concrete at various intervals. (Drilling
holes of this size and number weakens the concrete & causes it to crack from beneath.) A
slurry mud mixture is then pumped through the holes, creating a "pyramid" underneath which lifts the concrete.
The holes are then filled with a concrete patch. Because of the high moisture content in the material used for mudjacking,
evaporation is inevitable. And, because the voids between the "pyramids" are
not filled, the concrete resettles over time.
The invention of Sandjacking™ changes everything.
SandjackingTM is a patented process which uses patented
braces, hydraulics, and air pressure to lift the concrete, while filling the entire cavity underneath
with dry limestone sand, often without drilling unsightly holes in the surface of the concrete. So, why is SandjackingTM better? - No holes are drilled through the surface of the concrete when patented braces can be used to lift
the concrete.
- If
it is necessary to drill holes, they are 1/2" to 1" in diameter; also far fewer holes are necessary for Sandjacking.
- The limestone sand used for Sandjacking
flows freely and fills the entire void underneath the concrete, as opposed to the "pyramid" effect
you get with mudjacking.
- Because the limestone sand has less than a 2% moisture content, there is no evaporation. This
greatly reduces the possibility of future settling and allows us to provide a better warranty --- up to 5 years!
In a nutshell . . . . SandjackingTMprovides
a better-looking, more permanent solution than water-based mudjacking.
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