Raising Walls On Concrete Pad

Use a hydraulic concrete pump to pump the grout through the core drill holes.

Raising walls on concrete pad.

Traditional concrete walls and columns tend to range from 3 000 to 5 000 psi while 4 000 to 5 000 psi is needed for pavement. Drill 2 inch holes into the sunken concrete and pour a mixture of fly ash sand water and cement into the holes with a pump that produces 50 to 100 pounds of pressure. Sometimes slabs settle over time allowing annoying puddles to form whenever it rains. The mixture which is like thick mortar easily raises the sunken slab.

Polylevel is a structural grade polymer used as a superior alternative to mudjacking to raise and level broken concrete slabs patios driveways and sidewalks. This process is called mud jacking and it s a job best left to pros with the equipment to do it because the material has to be injected under pressure to do the job. The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height. The first step is to drill holes in the problem concrete.

Once the holes have been set the geolift is injected in between the concrete and the dirt. Use a pneumatic rock hammer to drill a 12 inch deep hole through each core hole. 1 cleaning the existing surface to ensure good adhesion 2 installing adequate steel reinforcement to the slab 3 wetting the existing concrete surface before pouring and 4 wetting the new concrete periodically after it sets so the concrete cures to the highest strength possible. There are several reasons why you might want to raise the level of a concrete slab.

Mix the grout with water in auger. The least expensive way to raise a sunken slab is to inject a combination of dirt aggregate and portland cement through holes in the surface. Not much pressure is required to do this since concrete slabs don t weight too much. Slabs also can crack flake or deteriorate making them more of a liability than an asset.

In a mobile mixer blend a grout mixture of sand silt and portland cement. Suspended slabs beams and girders as often found in bridges require 3 500 to 5 000 psi.