Our technique is known as "slabjacking" or "mudjacking," which originated in the 1930's.
This technique has made an important comeback through modern equipment and innovative techniques.
Through CRC's state-of-the-art volumetric mixers, a cementitious sand slurry is pumped under pressure through small holes drilled in the concrete slab. The slurry displaces air pockets, water and water-saturated soil, leaving the raised concrete on a firm, permanent sub grade.
Lifting settled concrete is done quickly, usually in just a few hours. Since there is no "break out," there is no concrete to haul away, no grading, no forms to build, no curing time, no re-landscaping and no landfill created. The raised concrete can be walked upon immediately and driven upon in a few hours. The finished work lasts about the same length of time replacement concrete would last; several years down the road.