Cationic Very Rapid Setting Polymer Modified Chip Seal Emulsion

A regional chip sealing project installed test sections of very rapid setting emulsions (CVRS-2P) to determine if the curing time of the chip seal could be shortened as compared to conventional chip seals using CRS-2P binders. The test sections cured very rapidly allowing initial brooming to be completed in less than 25 minutes following placement and opening to posted speed operation in less than 3 hours after the brooming. This is in contrast to control sections of conventional chip seals using CRS-2P binders, which required 8 to 12 hours of reduced speed curing before final brooming and opening to posted speed operation.

Publication Date: 
Wednesday, May 31, 2017
Publication Number: 
WA-RD 866.1
Last modified: 
07/05/2017 - 16:16
Authors: 
Keith W. Anderson, Mark Russell, Jeff S. Uhlmeyer, Chad Simonson, Kevin Littleton, Joe DeVol.
Originator: 
Washington State Department of Transportation. State Materials Laboratory.
Number of Pages: 
58
Subject: 
Asphalt emulsions, Chip seals, Surface treating, Binders, Curing and setting agents, Formulations, Materials tests.