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How SCB process works

The SCB Process is proprietary and available only through licensed applicators. The following description is essentially an overview.

A temporary seal is applied to the crack face and entry ports are placed in th seal along the crack plane. If the crack extends entirely through the concrete, the back side is also sealed to prevent adhesive runout.

Two metering pumps drive the two components (resin and hardener) of a fast-setting epoxy adhesive to a special mixing head. The adhesive is mixed at the nozzle and injected through a special gasket which prvents leakage on the face of the concrete.

The adhesive is pumped into the first entry port until it begins to show at the next adjacent port. The operator knows that the adhesive has reached the full depth of the concrete member when the adhesive oozes out of the next port.

The first injected port is then plugged and injection is resumed at the second port. This procedure is followed until the entire crack or void in the concrete is filled. The procedure is the same on horizontal or vertical surfaces. On vertical members the first port injected is usually the lowest and injection progresses upward. Injection pressures range from 2 psi to 300 psi and are controlled by the operator.

After the epoxy adhesive has cured, the temporary surface seal is removed, leaving the face of the concrete smooth and unmarred except for the faint trace outline of the crack. Sacking or painting usually will hide the injected cracks completely.






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