Frequently Asked Questions (FAQ’s)
Question: Can an asphalt overlay be placed over a roadway with an existing chip seal?
Answer: Placing an overlay on a road with an existing chip seal surface is not unusual and for some standard practice. The tack coat is the most important issue. Get it even, apply it at the correct rate, use the proper materials, make sure it is set and make sure the surface is clean and dry before you start. No problem. For more information, contact Scott Shuler, CSU Construction Management, Associate Professor, 720-289-2153, scott.shuler@colostate.edu
Assiciation Links:
Click on any image or printed link to access the web address.
Microsurfacing
A143 Recommended Performance Guidelines for Polymer Modified Micro-Surfacing, 2010. A143.pdf
Seal Coat Resources
www.vancebrothers.com (303) 341-2604, Dan Stephens, (dstephens@vancebrothers.com) Presentation from the 37th Annual Rocky Mountain Asphalt Conference & Equipment Show - Asphalt 106-Maintenance: Introduction to Seal Coats & Rejuvenators
Seal Master, www.sealmaster.net Chad Sayler, Sales Manager, chad@sealmasterdenver.com (303) 394-2220
Slurry Seal – Guide Specifications
A105 Recommended Performance Guidelines for Emulsified Asphalt Slurry Seal Surfaces, 2010. A105.pdf
Research Report 2009-9, “Short-Term Crack Sealant Performance and Reducing Bumps and Transverse Cracking in New Hot Mix Asphalt Overlays over Crack Sealants,” has been posted on the new CDOT website:
Cracksealants
Information Links:
Click on any printed link to access the information shown
The ABC"s of Pavement Preservation
Six Steps To A Better Chip Seal From University of California, Berkley Tech Transfer Newsletter
Potholes -The Hole Story- Facts and Fallacies of Potholes (reprinted from the APWA) Zipped File
Rural Road Maintenance
Pavement Management/ Maintenance
Rubbilization
Roadway Sweeping
CDOT- Hot In Place recycling Specification
Maintenance Article ~ By CTL/Thompson, Inc ~published in the Denver Business Journal
Utility Trench Repairs, A case study in Parker Colorado
High Volume/High Speed Asphalt Roadway Preventative Maintenance Surface Treatments
Surface Treatments: When Your Seals Make Sense, From Better Roads Magazine
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