Holes drilled in the concrete.
How to break up concrete wall expanding material.
Ignore any rebar you come across and just break the concrete free of the metal.
Over the next 24 hours the agent expands with about 18 000 lb.
A pickax is handy for cutting through roots breaking up rock or shale and scraping material out from under the slab.
Three reliable expansive grouts are bustar dexpan and ecobust.
Break the concrete wall into small chunks with your preferred tool and let the debris fall to the ground as you work.
To use this material requires drilling a series of 1 1 2 inch diameter holes to 80 of the concrete thickness.
The holes are cleaned with compressed air then the slurry is mixed and poured into the holes.
Scoop a small amount of the slurry mix out and put it on the middle of the blade of the mason s trowel.
Poured into drilled holes dexpan breaks concrete and cracks splits rocks safely and quietly while providing silent cracking.
Dexpan is a cement with amazing 18 000 psi expanding strength when mixed with water.
These chemical powders are mixed with water and poured into 1 1 2 in to 2 in dia.
Dig about 1 foot inward from the slab s edge making a gap of 1 inch or so.
Apply the slurry to your new concrete wall by holding the trowel blade to the wall so the slurry is pressed onto it and wiping the slurry across the wall with a smooth arcing motion.
The holes should be located about 8 inches apart in reinforced concrete.
Concrete demolition and rock breaking cracking splitting has never been easier with dexpan non explosive demolition agent.