QPR’s Tack Coat is Holding Maryland Together

by Zach Lovett on Thursday, March 22nd, 2012 at %I:%M %p

Most people familiar with using hot mix asphalt for paving or repair of pavement are familiar with the use of tack coat.  A tack coat is a very light application of asphaltic emulsion or asphalt binder to an existing pavement surface or between layers of hot mix asphalt. Asphalt tack coat is used to ensure a good bond:

  • Between the existing pavement surface and the new hot mix asphalt overlay, including planed surfaces.
  • Between the layers of each lift of hot mix asphalt.
  • At any vertical surfaces that the new hot mix asphalt will be placed against (curbs, gutters, and construction joints).
CDOT Tack Coat

DOT workers in Charlotte, NC apply tack coat to a pothole before repair

 

 

Tack coats should be applied uniformly across the entire pavement surface and result in more than about 90% surface coverage. In order for this uniformity to be consistently achieved, all aspects of the application must be considered and carefully controlled. Specific aspects are:

  • the condition of the pavement surface receiving the tack coat
  • the application rate
  • type of tack coat according to standard DOT specifications
QPR currently produces two types of tack coat.  In the Baltimore, Maryland area and surrounding towns, our tack coat is taking over.  More and more plants and paving crews are stocking and using QPR’s Tack2O and RC Tack.  In large highway paving applications tack is typically applied in bulk by a specific truck, but for many contractors in smaller applications 5 gallon pails are an effective way to create a good bond without spending money on expensive equipment.
  • QPR’s Tack2O is a cationic emulsified or water based product which works great in warm temperatures and is friendlier for the environment. It is slow setting which increases the time between application and paving and also allows for greater workability. Its low viscosity helps to fill cracks and grooves in the existing pavement. Tack2O is less sensitive to high humidity that parts of the country can experience during the summer months. It can also be used as a driveway sealer and performs quite well in that role. During the green movement of the last several years any products containing an oil base are slowly being phased out which is why QPR and our partner Hammaker East materials developed an eco friendly product. QPR and our partners are committed to environmental sustainability through smarter technologies.
  • RC Tack is a premium rapid cure asphalt cutback. It is an oil based product which is better suited for cooler temperatures and will not freeze or “stiffen up”. It is usable year round and will cure rapidly once applied. Like the Tack2O, this product can also be used as driveway sealer.

 

 

Tack20

QPR ShopWorx's Tack20 emulsified tack coat

 

RC Tack

QPR ShopWorx's RC Tack, an oil based tack coat

 

 

With any product that is new to the market the real test comes from the end users and in this case the response has been great.

 

“QPR has produced a great product, from the packaging to the quality of the material inside each pail they have really come out with a top notch tack coat.” – Scott Croney, Independence Construction Materials.

 

“I have used QPR’s tack on several of my jobs and it has performed above my expectations in every case. The material never separates and pours out of the pail with no issues every time.” – Jerry Johnson, Johnson Brothers Paving

 

 

Contact your QPR representative today for more information on our tack coat.  We have options for resale as well, should you want to sell tack coat at your asphalt plant.  Call today!

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The Author: Zach Lovett

Zach is the Mid-Atlantic Territory Manager for QPR, and has been with the company since 2005. He is also the International Sales Manager for the company, increasing our presence across the globe as a market leader. Zach is originally from Iowa, and a Hawkeye at heart, but now resides in the Baltimore area with his wife, Kaitlin.

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