Importance of Fine Aggregates in Achieving Adequate Skid Resistance in TxDOT Hot Mix Asphalt Mixtures [Project Summary Report]

Abdallah, Imad; Khan, Mirza Aamish H.; Omole, Adegboyega; Reddy, G. Sandeep; Montoya, Miguel A.; Nazarian, Soheil

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Importance of Fine Aggregates in Achieving Adequate Skid Resistance in TxDOT Hot Mix Asphalt Mixtures [Project Summary Report]

2026-08-31
By Abdallah, Imad ; Khan, Mirza Aamish H. ; Omole, Adegboyega

File Language:

English

Details

Creators:

Abdallah, Imad ; Khan, Mirza Aamish H. ; Omole, Adegboyega ; Reddy, G. Sandeep ; Montoya, Miguel A. ; Nazarian, Soheil
Corporate Creators:

University of Texas at El Paso. Center for Transportation Infrastructure Systems
Corporate Contributors:

Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

0-7108
Resource Type:

Brief
Geographical Coverage:

United States ; Texas
Edition:

Project Summary Report
Corporate Publisher:

Texas Department of Transportation. Research and Technology Implementation Office
Description:

Pavement friction is a critical roadway-safety property, particularly under wet conditions, yet it is not routinely evaluated during asphalt mixture design. TxDOT's Balanced Mix Design (BMD) process primarily addresses rutting, and cracking. Consequently, a mixture can satisfy conventional performance requirements yet still lose adequate surface friction as traffic removes the binder film and polishes the exposed aggregate. Project 0-7108 examined how material, mixture design, and construction variables affect long-term friction and sought a practical way to improve friction without unnecessarily redesigning the entire mixture. The research identified aggregate quality, particularly resistance to polishing, as the dominant factor controlling long-term friction. It therefore focused on determining which aggregate size fractions most strongly influence friction and whether premium, polish resistant aggregate could be concentrated in those fractions while preserving conventional BMD performance.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/93908/dot_93908_DS1.pdf
File Type:

[PDF - 292.85 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:193fa749851e5f3dbba48501563f3433a14849ede4ef365d2395c051fcc42b43d914fe5c9423f2d6a491ebb9b13fa0659f3d62ac208f268711ec0e3af67b69d6

File Language:

English

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