Raising Walls On Concrete Pad

Slabs also can crack flake or deteriorate making them more of a liability than an asset.

Raising walls on concrete pad.

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. The key to success was. Mix the grout with water in auger. The first step is to drill holes in the problem concrete.

There are several reasons why you might want to raise the level of a concrete slab. 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 mixture which is like thick mortar easily raises the sunken slab. Not much pressure is required to do this since concrete slabs don t weight too much.

Holes should be no less than six inches away from the edge of the concrete. Use a pneumatic rock hammer to drill a 12 inch deep hole through each core hole. Suspended slabs beams and girders as often found in bridges require 3 500 to 5 000 psi. 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.

Use a hydraulic concrete pump to pump the grout through the core drill holes. The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height. Sometimes slabs settle over time allowing annoying puddles to form whenever it rains. 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.

Once the holes have been set the geolift is injected in between the concrete and the dirt. Concrete footings and slabs on grade typically require a concrete of 3 500 to 4 000 psi.