CON-AID / CBR PLUS is an ionic soil stabiliser that improves the load-bearing capacity of clay and silty soils by altering their water interactions microscopically. The product permanently bonds to soil and clay particles, forming a protective layer that:
"The result is a stabilised road layer that is far less sensitive to moisture, easier to work with, and able to withstand traffic loads over time."
CON-AID / CBR PLUS is a cation reactive thio compound which forms protective layer on the surfaces of the soil and clay particles. It reduces ion mobility and ion exchange and simultaneously makes the material hydrophobic by eliminating the adsorption of water.
The result is a soil material that is much less sensitive to moisture, more workable and can be compacted to a better particle-interlock state by equipment and traffic forces. Better particle interlock means higher internal friction and improved bearing capacity.
CON-AID / CBR PLUS will treat a wide spectrum of materials ranging from clays to clayey silty sands and clayey gravels. Non-cohesive materials such as sand can be treated only after they have been modified by mixing them with a suitable clay material.
Clay minerals have a predominantly negative electrical or anionic charge. This causes the clay minerals to have a strong attraction for any cations present and react with water, known as adsorbed water (electrostatic diffused double layer).
By providing stronger positive molecules, the negative charge of the clay minerals can be more than satisfied. This allows for displacement of the water under compaction and a permanent increase in density. Ingress of water is prevented and a permanent road is provided.