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CRF®
Restorative Seal is a petroleum oil and water cationic emulsion.
Unlike standard asphalt emulsion, CRF® does not harden or "dry out"
Designed as a one component emulsion that effectively repairs cracks
in concentrated form, CRF® provides a excellent pavement restorative
seal when applied in diluted form.
CRF® Restorative Seal is a modern sand seal product. Sand penetrates
the emulsion and adds additional binder strength. This sand/emulsion
combination is kneaded by vehicular traffic to provide a long term
seal.
CRF® Restorative Seal is superior to standard asphalt emulsions: CSS
or SS emulsions. Lower in asphaltene with rejuvenator qualities, it
is less receptive to oxidation. Not just designed to "coat" the
surface aggregrate, CRF® holds the sand added to it and the emulsion
fills surface voids with a very flexible product.
HOW DO YOU APPLY CRF® RESTORATIVE SEAL?
CRF® Restorative Seal is diluted with water 2:1 (2 parts product to
1 part water) or 1:1. Typical cure time is 20 minutes to one hour
with minimum ambient temperature of 10° C or 50°F and rising.
Product stability is excellent. There is a simple procedure to
determine the amount of CRF® Restorative Seal that a pavement can
absorb by use of a test kit. The kit contains all the necessary
materials and detailed instructions on test procedures to determine
the quantity and rate of absorption.
There are several methods of application, which offer excellent
results:
•RESTORATIVE SEAL: consists of distributor truck application
at a predetermined rate of spread, allowed to cure and then sand is
applied.
•BROOM SEAL/ SCRUB SEAL: application of a predetermined rate
of spread by distributor truck, sand application after curing
followed by a broom system to even out and work the sand into more
of the open areas. With traffic's kneading action, CRF® will tighten
up and seal the open areas.
• SQUEEGEE SEAL: is an excellent restorative seal method of
initially filling open areas with CRF® by working the product into
those areas with a rubber blade. A second application can be made,
if required, after the first is allowed to cure. Sand and roll using
a rubber-tired roller. This method will seal the surface; repair
cracks and distressed sections at a low cost. This application is
also used for “high production” crack filling. |
