TxDOT Research Project

Statewide Implementation of the Surface Performance-Graded (SPG) Specification for Seal Coat Binders in Service

Project Summary
A Surface Performance-Graded (SPG) Specification for seal coat binders in service was developed and validated in TxDOT Research Projects 0-1710 and 0-6616 using binder properties measured in the laboratory and visual performance of 75 highway sections. The objective of this project is to implement the SPG specification statewide. Implementation will improve performance and extend the life of seal coats by providing an improved method for seal coat binder selection that accounts for differences in climate and directly relates to performance in terms of aggregate loss and bleeding over the critical first-year period. Seal coats make up approximately 40% of road surfaces statewide. This performance-related specification would replace the current TxDOT Seal Coat Material Selection Table (with the tier system) and conventional seal coat binder specifications for materials in service provided in TxDOT Item 300. TxDOT spends over $300 million on the contracted district-wide seal coat preventive maintenance program annually to treat approximately 8% of the state highway system. Implementation of this specification is expected to result in annual savings of $9 million by extending the life of 20% of the total seal coats by one year.

Project Number
5-6616-01
Status
Completed

link icon Copy link to this project.

Start Date
10/8/2013
End Date
8/31/2018
Performing Institution(s)
Texas A & M Transportation Institute (TTI)
Research Team
RS: Amy Epps Martin
Sponsor
Project Manager
Kevin Pete
Contract Specialist
Patti Dathe
Amount Funded
FY14: $221,617
FY15: $195,530
FY16: $155,198
FY17: $80,155
FY18: $100,000
Page:
Functional Area
Construction and Maintenance
Index Terms
Binders
Dynamic shear rheometry
Field tests
Hot mix asphalt
Pavement performance
Performance based specifications
Performance grade
Specifications
Surface treating
Texture
Lead University
TTI
Researcher
Martin, Amy Epps
See Also
Page:

Registered users may add comments. Comments will be shown with usernames.

Comments
Record Added:
4/6/2015
Record Updated:
5/3/2023 5:30 AM EDT

Report a broken link or error ».

Library
Home | Catalog | News | About | Privacy Statement

Made possible by the generous support of the
Texas Department of Transportation Research and Technology Implementation Division (RTI)


Center for Transportation Research | Cockrell School of Engineering | The University of Texas at Austin

©2024 Center for Transportation Research | Web Accessibility Policy | Web Privacy Policy