Evaluation of Alternatives to Calcined Bauxite for HFST

Maintaining the appropriate amount of pavement friction is critical for safe driving. High friction surface treatment (HFST) can enhance the ability of a road surface to provide pavement friction to vehicles in critical braking or cornering maneuvers. Missouri Department of Transportation (MoDOT) has used HFST since 2013 to restore pavement surface friction where traffic has worn down pavement surface aggregates and also to improve wet crash locations. Although several aggregates have been evaluated, only calcined bauxite aggregate has met the threshold for performance necessary to be called a HFST. Currently, calcined bauxite is the primary aggregate used for HFST in Missouri. Calcined bauxite has very limited sources, which makes it more expensive than locally available aggregates. The objective of this study is to identify and compare alternatives to calcined bauxite through testing and laboratory evaluation.

Language

English

Project

Status: Active
Funding: $116,974
Contract Numbers:
TR202005
Sponsor Organizations:
Missouri Department of Transportation

1617 Missouri Boulevard
P.O. Box 270
Jefferson City, MO United States 65102
Project Managers:
Schulte, Brent
Performing Organizations:
Missouri University of Science & Technology, Rolla

Department of Engineering
202 University Center
Rolla, MO 65409
Principal Investigators:
Abdelrahman, Magdy

Myers, John
Start Date: 20191122
Expected Completion Date: 20210901
Actual Completion Date: 0

Subject/Index Terms

TRT Terms: Alternatives analysis; Bauxite; Calcined aggregates; Evaluation and assessment; Friction course; Laboratory tests
Geographic Terms: Missouri
Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

Accession Number: 01733972
Record Type: Research project
Source Agency: Missouri Department of Transportation
Contract Numbers: TR202005
Files: RiP, STATEDOT
Created Date: Mar 20 2020 10:20AM