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A strong layer of fabric is applied under asphalt to minimize surface water infiltration and prevent existing cracks in the road from surfacing.
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· Moisture Barrier
· Stress absorbing interlayer
The Propex Petromat System extends the life of new asphalt concrete (AC) pavements and AC overlays. The Petromat System consists of Propex's Petromat non-woven plypropylene fabric which is field saturated with an asphalt cement tack coat. When placed between pavement layers, the Petromat system becomes an integral part of the roadway section, forming a barrier to water infiltration and absorbing stresses to reduce reflective and fatigue cracking of the new AC surface layer.
Since 1965, the economical Petromat System has had an outstanding record of improving pavement performance while reducing maintenance and roadway life-cycle costs. Paving fabric systems are currently being used at a rate of over 15,000 equivalent lane miles per year in North America alone.
A heat set on top to minimize asphalt cement tack coat bleed-through and to protect against damage from construction traffic.
A special blend of fiber sizes to promote rapid, uniform tack coat saturation and to give the interlayer stability while holding the asphalt cement in place indefinitely.
An engineered amount of stretch to ease installation while maintaining stability.
Choice of Styles: Petromat styles 4598 & 4599 are the most widely recommended and used fabrics. Style 4598 meets the requirements of AASHTO guideline specification M-288-96. Also available as Petrogrid, a composite of style 4598 and glass fiber structural grid.
Cost-Effective: The installed cost fo the Petromat System (fabric & asphalt cement tack coat) is typically less than half the cost of .1 foot (3cm) of AC. For extending pavement life, the installation of the Petromat System is therefore much less expensive than placing additional asphalt concrete or increasing roadway maintenance. Use of paving fabrics generally yields a savings in pavement rehabilitation system costs of more than $7000 per lane mile.
Versatile: The Petromat System is effective within new AC pavements, below AC overlays over rigid and flexible pavements, and below surface treatment (chipseal) pavements. It can improve the performance of highways, city streets, parking areas, airport pavements, bridge decks and other pavement surfaces.
Made by Propex: A pioneer in the paving fabrics and geotextiles, Propex provides customers with quality products, a wealth of technical information and assistance, and the nation's most extensive and knowledgeable distributor network. Check out the Propex website for specification and installation guidelines: http://www.geotextile.com.
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