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Title:

Contribution of Different Structural Layers to Pavement Rutting: Case Study Through Forensic Investigation of a Test Section on Interstate-35
Cover of Contribution of Different Structural Layers to Pavement Rutting: Case Study Through Forensic Investigation of a Test Section on Interstate-35

Accession Number:

01624216

Record Type:

Component

Abstract:

To evaluate the contributions of different pavement layers to pavement distresses, i.e., rutting, fatigue cracking, a 1,000 ft long test section was constructed on the southbound lane of Interstate 35 near Purcell, Oklahoma. The test section consisted of five layers: two Hot Mix Asphalt (HMA), one aggregate base, one stabilized subgrade and natural subgrade layers. Rutting, fatigue cracking, and International Roughness Index (IRI) were measured on the test section for six years at approximately every three months interval. The rutted profiles of the test sections were compared with those in NCHRP Report 468. Minimal cracking and significant rutting were observed on the test section. The highest recorded rut value was 0.868 in. Cores were extracted from the cracked pavement locations which revealed that the cracks were contained primarily in the surface layer. To further investigate, trenches were cut at three selected locations with highest, lowest, and average rutting. It was observed that rutting was contributed mostly by the HMA layers, more specifically, the surface layer. Minimal to negligible rutting was observed in the aggregate base, stabilized and natural subgrade layers. Furthermore, the Mechanistic-Empirical Pavement Design Guide (MEPDG) rutting models were calibrated based on the forensic study, and the optimized calibration coefficients were: β sub r1 = 1.35, β sub r2 = 1, β sub r3 = 1.05 for HMA; β sub GB = 0.05 for aggregate base, and β sub SG = 0.05 for natural subgrade. Results from this field study provide an insight on the behavior of different pavement layers and thereby, assist pavement designers in addressing rutting problems in future design.

Supplemental Notes:

This paper was sponsored by TRB committee AFD00 Section - Pavements. Alternate title: Contribution of Different Structural Layers to Pavement Rutting: A Case Study through Forensic Investigation of a Test Section on Interstate 35.

Monograph Accession #:

01618707

Report/Paper Numbers:

17-02600

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Hossain, Nur
Singh, Dharamveer
Zaman, Musharraf
Timm, David H
Solanki, Pranshoo

Pagination:

18p

Publication Date:

2017

Conference:

Transportation Research Board 96th Annual Meeting

Location: Washington DC, United States
Date: 2017-1-8 to 2017-1-12
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Geographic Terms:

Purcell (Oklahoma)

Subject Areas:

Design; Highways; Pavements

Source Data:

Transportation Research Board Annual Meeting 2017 Paper #17-02600

Files:

PRP, TRIS, TRB, ATRI

Created Date:

Dec 8 2016 10:59AM