Penatron 3246

Product Description

Penatron 3246 Aromatic is a high density and high elongation "Slow Set Polyurea” designed for use in expansion joints in parking structures, bridges, airfields, etc.  This product meets FAA P605 for airfield joints.

Penatron 3246 is a 3 to 5 minute gel time, flexible 1:1 polyurea system.  This two-part expansion joint product is 100% and designed to be self-leveling for exterior moving joints.  3246 is machine-dispensed using the ASTC LS 1:1 application machine.

Moisture Vapor Reduction:  Penatron 3246 is compatible with CMW used in joints to reduce moisture vapor pressure on joint products.  Reducing vapor pressure can be very important when using a low durometer, high movement expansion joint product.

Advantages

• HIGH DENSITY POLYUREA
• ELONGATION EXCELLENT IN COLD CONDITIONS
• MEETS USDA REQUIREMENTS INTERMITTENT CONTACT
• MEETS FAA P605 – AIRFIELD JOINTS
• 100% POLYUREA
• RAPID APPLICATIONS & SET TIMES
• "DRIVE-OVER" IN 30 TO 45 MINUTES
• STAYS FLEXIBLE IN COLD CONDITIONS
• NON-FLAMMABLE
• 3-5 MINUTE GEL TIME @ 77°F
• SELF-LEVELING
• 100% SOLIDS, NO VOC, NO ODOR
• EXCELLENT ABRASION RESISTANCE
• HIGH IMPACT RESISTANCE
• CHEMICAL RESISTANT

USES AND AREAS

• EXPANSION JOINTS – EXTERIOR CONCRETE
• BRIDGES
• PARKING STRUCTURES
• AIRFIELDS
• DECKS
• LOADING DOCKS
• MOVING EXPANSION JOINTS

General Physical Characteristics

Expansion Joint Size and Movement:  Expansion joints should be designed with a maximum of +/-25% movement. The overall movement of a joint should be measured at the temperature extremes that are normal for the structure.  Measure the opening of the joint at the coldest temperature and at the highest temperature and multiply by 4.  If a joint opens and closes 1/4 inch, the joint width should be 1 inch and the fill depth should also be approximately 1 inch.

Maximum Depth:  Areas of higher movement, standing water and deicing chemicals should have joint depth of 2 times the width. In areas of moderate movement and pneumatic tire traffic, the depth of fill may be appropriate at 1 to 1.5 times the width. Structures such as bridges, airfields or parking structures that are exposed to wide thermal cycle swings and a high movement potential may exert excessive compression and expansion (pulling) forces on the joint material. Better applications for joints in high movement structures are applications with increased depth of the fill material in the joint.  More surface area on the sides of the joint will provide better bonding on more available surface area.

Bond Breaker:  A bond breaker is often used at the bottom of an expansion joint to allow for greater movement of the product filling the joint.  Use a bond breaker on deep joint fills as needed.

Minimum Depth:  Shallow fill applications have a greater potential for loss of adhesive bond and damage.  Moving joints should not be filled less than 75% of the width.

Below Finished Grade: Keep the installation of the product slightly below the finished surface grade.  Install the product when the joint area is open and cool.

Preparation: Concrete must have a minimum 28-day cure prior to application.  Use a dry diamond saw to saw/abrade both sides of the joint walls.  Assure that the joint is properly abraded and cleaned to full depth of the product fill area. Clean saw-cut joints with a wash-down of alcohol/water mix or other fast flash solvent to remove dust prior to product application. The concrete surface must be dry.  Remove any curing agent, form release materials, oils, wax, moisture or any material that may affect bonding.  Clean, vacuum, and wash to remove dust from the walls of the joint.

Primer:  Use ASTC 6012-2F primer or Penprime 7001.  Consult ASTC for the best primer for your application.  All moving joints require a primer before application of the 3246.  Prime approximately one hour before application of the 3246. For best bonding results, apply the joint product as soon as possible over the primer.  See data sheets on above primers.

Application:  Use a 1:1 positive displacement (cylinder) application machine or ASTC LS pump.
Pre-condition 3246:  Make sure the product is over 72°F before beginning the machine application.  Warm the product in the containers as needed to proper working temperature for this product.  Use ONLY the ASTC recommended static mixing units for this product.  Important:  Monitor the static mixing wand during the application and change static mixers when product build-up is observed. Failure to do the above may result in improper product mixing.

Filling:  Fill the joint from the bottom of the joint, fill depth, and fill to below grade.  The product is self-leveling and quick to set; avoid overfilling. **Always mix part  B before using.

Limitations:  Do not use on wet surfaces or expose part A to moisture.  Store out of direct sunlight and store ten gallon kits on wood pallets at room temperature.  Warm or pre-condition product kits on pallets before using in cool conditions below 70°F.  3246 Polyurea exhibits good chemical resistance to motor pool fluids, aviation fluids, i.e. hydraulic fluid, diesel fuel and JP4 and cleaning solutions for short periods of time.  To maintain proper joint integrity, clean up chemical spills quickly.  Submersion of product or continued water ponding over product may result in a low skid resistance condition, hazardous working condition, or slip hazard.  Chemicals, oils, soaps, etc. should be removed from the surface as a normal part of cleaning and maintenance.

Note:  Part A is moisture sensitive – keep away from compressed air units that may dispense moisture near part A and avoid exposing the pail/container to humidity.  Observe appearance of part A in humid conditions.  Store product under nitrogen and seal container thoroughly after adding nitrogen.

Packaging: 10 & 110 gallon kits

VOC Content:  0gms/1 or 0.0 lbs/gal

Pot Life:  n/a 


This product is for use by professional applicators only. Wear Protective Clothing. Read MSDS before using this product. DOT/Flash Point – Non-flammable Liquid Classification, not regulated. Warranty:  See ASTC Polymers, Inc. Warranty data sheet.  (8/05) Product data sheets subject to change without notice.  © 2005 ASTC Polymers, Inc.