7. Concrete Overlays Over Existing Asphalt Parking Lots

Date: May 5th 2021
Speaker: Don A. Clem, PE (Colorado) Vice President-Local Paving, National Ready Mixed Concrete Association


The performance life of asphalt surfaced parking lots can be extended by placing a bonded concrete layer on top of the existing asphalt. This technique has been used for many years for highway, street and parking lot pavements but still engineers and owners are unfamiliar with the process. This webinar will cover the publication entitled the Guide to Concrete Overlays of Asphalt Parking Lots and demonstrate the steps necessary to properly design and construct a concrete overlay.


Learning Objectives:

  • Learn how to evaluate and assess an existing asphalt parking lot for a concrete overlay.
  • Understand how to determine the thickness of concrete required to be placed over the asphalt.
  • Learn the various construction techniques and how to determine the proper joint spacing.
  • Discover which details and specification criteria are especially important for these projects.



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Xypex Bio San C500 Animation - YouTube




Untitled (concreteisbetter.com)

Bio San C-500 Data Sheet



:: Concrete Parking :: Comprehensive Concrete Parking and Green Pavement Site for Enineers, Architects and Owners ::


Bio San C-500 Brochure






Sika US website -  https://usa.sika.com/


Software and Technology for Construction Materials


Control NS data sheet and or video – Overall information, data sheet Sika Control NS or SC download area, Slab solution brochure, or Slab solution video


Visibility into the Drum




New stealth fiber data sheet and or video. Stealth Data sheet, Stealth Video


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MB Slab https://mbslab.com/

PCA Website on Portland Limestone (greener) Cements:




MasterX-Seed (for strength and CO2 reduction) Master X-Seed 55 strength-enhancing admixture (master-builders-solutions.com)

PCA information on FDR



MasterLife 300 series , it has a video on it. https://www.master-builders-solutions.com/en-us/products/waterproofing/crystalline-waterproofing/masterlife-300d

NRMCA Pave Ahead Website:


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