|
PetrotacŪ
 Introduction
Petrotac is an unique peel and stick paving fabric/ rubberized asphalt composite membrane. Petrotac acts as a moisture barrier as well as a stress absorbing membrane interlayer. It is used in pavement maintenance to treat joints and cracks before overlay placement. Petrotac is also used as a bridge deck membrane system.
BENEFITS
- Minimizes water infiltration: Moisture can enter a pavement through cracks and pores, ultimately causing a loss in pavement strength. Petrotac membranes seal cracks and joints, reducing the damaging effects of moisture penetration.
- Reduces reflective cracking: Petrotac used as a stress absorbing membrane interlayer, absorbs stresses from underlying cracks or joints helping to insulate the overlay from relective cracking. Monitored field intallations on high volume roadways deomonstrate that pavements with the Petrotac interlayer show considerabley less recurrence of cracking.
- Easy to Install: Petrotac peel and stick membrane can be installed quickly by a two-person crew. No special equipment is necessary.
- Excellent bonding to overlay: The top surface of Petrotac is precoated with an asphalt cement tack coat, which ensures an excellent bond with the pavement overlay.
- Multipurpose: Petrotac adhesive will stick readily to asphalt, concrete, and wood surfaces. Petrotac membranes have been proven effective in sealing and treating pavement cracks, potholes, and other localized distress areas, and are used as bridge deck membranes.
MATERIAL PROPERITIES
Petrotac consists of Amoco's Is Petromat a needlepunched nonwoven polypropylene fabric, coated with asphalt cement and a rubberized asphalt adhesive. A release sheet which is removed prior to placement covers the adhesive.
Petrotac is available in a variety of widths, as shown below. The rolls are individually packaged in corrugated boxes Petrotac should be stored in a dry location at temperatures not exceeding
125°F
Installation
A detailed Petrotac Installation Guide is available
upon request from Amoco or your local distributor.
The attached sheet contains full guide specifications for pavement repair and bridge deck membranes.
Notes
1 Minimum average roll values unless otherwise noted
2 Using 12 in/min test speed and 1" initial distance between grips
3 Using 180° bond on
1/4" mandrel at -25°F
REFERENCES
Barnhart, V.T, Field Evaluation of Experimental Fabrics to Prevent Reflective Cracking in Bituminousn Resurfacing, Michigan Department of Transportation, Research Report No. R-1300, July 1989.
Goodner, G.S., Evaluation of Heavy Duty Membranes, Oklahoma Department of Transportation, May 1991.
Knight, N.E and Hoffman,
G.L., Heavy Duty Membranes for Reduction of Reflective Cracking in Bitmuinous Concrete Overlays, Commonwealth of Pennsylvania, Department of Transportation, Office of Research and Speacial Studies, Reasearch Project 794 Dec. 1983.
|
