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Chase Corporation Bridge & Highway

How A Properly Applied Tack Coat Can Extend The Life Of Your Project

Posted by Brock Peterson on Mar 23, 2018 11:10:00 AM

Tack Coat: The Bond That Promotes Optimal Performance

 A vital but often overlooked part of an asphalt pavement is the bond strength between the layers that make up the finished structure. Tack coat is the main component responsible for ensuring a sufficiently strong bond.

 What is a tack coat?

  • It is an asphalt binder that is spray applied onto a substrate material -- typically cement, asphalt or steel (in the case of orthotropic bridges) -- prior to placing a new asphalt overlay.
  • This thin application of bitumen is the glue that binds the two layers of pavement resulting in a uniform structure.
  • This bonding of the layers creates a structure that behaves as a single unit as opposed to unbound, independent layers.
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Topics: Bridge and Highway, Rosphalt, Tack Coat

Waterproofing Membranes: Protecting Vital Components of the Nation’s Bridges

Posted by Brock Peterson on Feb 5, 2018 11:30:00 AM

When looking at our nation’s infrastructure, it is not difficult to see there are many bridges in desperate need of rehabilitation. According to the latest Infrastructure Report Card, the U.S. has 614,387 bridges, almost four in ten of which are 50 years or older and nearing the end of their intended service life. In 2016, nearly 10% of these bridges (56,007) were considered to be structurally deficient. 

When considering the durability of a bridge, there are two main areas thought to be the most vulnerable components:

  • The concrete deck
  • The untreated steel rebar used to provide structural reinforcement
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Topics: Bridge and Highway, Royston, Infraestructure

Using Thermoplastic Polymers In Asphalt Mix For Bridge Decks

Posted by David Fricke on Nov 15, 2017 11:13:45 AM

Asphalt has been used on bridge decks for over 100 years with the intent of providing an effective road surface area for traffic and limited water-proofing properties. Historically, standard materials have functioned well without the need for modification but as traffic volumes and loads have increased, demand has necessitated a shift to high- performance surfacing materials.

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Topics: Bridge and Highway, Thermoplastic, Rosphalt

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