HELITECH's procedure to raise settled concrete is a process by which 2" holes are drilled through a slab of concrete. A combination of portland cement, aggregate and water is injected into the holes (under controlled hydraulic pressure) to fill all voided areas
When voided areas are filled, the injection mix "raises" the slab to the desired height. The area is then "broom cleaned" and core holes are repaired to produce an attractive, smooth surface.