Details:

Creators:
Clark, Trenton M. ; Rorrer, Todd M. ; McGhee, Kevin K.
Clark, Trenton M. ; Rorrer, Todd M. ; McGhee, Kevin K. Less -
Corporate Creators:
Virginia Center for Transportation Innovation and Research
Corporate Contributors:
Virginia. Dept. of Transportation
Subject/TRT Terms:
[+]
Asphalt Concrete Bond Performance Bond Strength Bond Strength (Materials) Chemical Bond Milled Surfaces Non-tracking Tack Paint Seal Coats Surface Course (Pavements) Tack Tack Coat Tack Coats Trackless Tack
Publication/ Report Number:
VCTIR 12-R14
Resource Type:
Research Paper
Geographical Coverage:
Virginia
Corporate Publisher:
Virginia Center for Transportation Innovation and Research
Abstract:
The purpose of this study was to develop, demonstrate, and document laboratory procedures that could be used by the

Virginia Department of Transportation (VDOT) to evaluate non-tracking tack coat materials. The procedures would be used to

qualify candidate material formulations for field validation.

The procedures were developed and were demonstrated through an evaluation of five “trackless” tacking materials and

two conventional tacking materials. The evaluation demonstrated that the trackless materials outperformed the conventional

materials in the laboratory tracking test and in the bond performance tests for tensile and shear strength.

The study recommends that VDOT formalize the described laboratory procedures to produce a Virginia Test Method to

qualify candidate non-tracking tack coat materials for field verification. It further recommends that VDOT formalize the field

verification system and includes general direction on the elements to include in that process.

This work is part of a program of research designed to support a move to performance-oriented specifications for the

interlayer bond for pavement construction. The non-tracking tack coat materials investigated in this study are expected to

facilitate the improved performance of this bond and, as a consequence, the pavement system as a whole. This work supports an

anticipated incremental improvement to an annual asphalt concrete program that is worth between $200 million and $400

million per year (not including new construction). When applied to investments on this scale, even nominal improvements

easily translate into considerable savings.


Format:
PDF
Funding:
101477
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:34fc2ec9424aeb260250cb8e67e08435146695fe72c7d5ebdbda5d55c7a79380
Download URL:
https://rosap.ntl.bts.gov/view/dot/24554/dot_24554_DS1.pdf
File Type:

Supporting Files

• No Additional Files

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