Understanding Gravel-Lok

• Basically it is a polyeurathane. It's Plastic
• No mixing required it is ready to use.
• Moisture curing liquid that cures to an inert substance.
• Color: Amber Liquid
• Will not leach into the ground

Viscosity: 400 - 700 times the thickness of water. Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or extensional stress.


 A common measure of the viscosity (thickness) of a liquid. It is important to know your product’s cps when selecting items like mixers or pumps.

VISCOSITY: 400 – 700 Centipoise at 77°F (25°C)
Viscosity is the measurement of the thickness of a liquid. Viscosity is an important parameter in determining the "mouthfeel" of a product. The most common unit of expressing viscosity is the centipoise (cps) unit. The viscosity of water at 25° C is 0.89 cps

Moisture:
Gravel-Lok is cured by the moisture in the air. The higher the humidity the quicker it cures.
When winter approaches and temperatures fall below 50 degrees and there is less moisture in the air it takes longer to cure.

If you are using Gravel-Lok on a CR-6 base you will want to make sure there hasn't been rain for several days. If there is moisture in the ground it will cause the liquid to foam. No need to be alarmed you can crush the foam with a stick or by stepping on it.

The Cell-Tek Stabilizer grid allows for faster drying of the base. Also if foaming occurs it is lower in the system and most likely will not rise to the surface.

The foaming on the bottom can also help to make a stronger installation because it is a build up of the liquid on the base of the gravel.

Gravel-Lok can even be used by digging out and putting down 2 inches of stone and pouring it on. But much like asphalt without a base we all know what happens after some freezing and thawing.