Layer Coefficients for New Hampshire Department of Transportation Pavement Design

Dave, Eshan V.; Sias, Jo E; Nemati, Rasool

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Layer Coefficients for New Hampshire Department of Transportation Pavement Design

2019-06-01
By Dave, Eshan V. ; Sias, Jo E ; Nemati, Rasool

File Language:

English

Details

Creators:

Dave, Eshan V. ; Sias, Jo E ; Nemati, Rasool
Corporate Creators:

University of New Hampshire. Department of Civil and Environmental Engineering
Corporate Contributors:

New Hampshire. Dept. of Transportation. Bureau of Materials and Research ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA-NH-RD-26962N
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

University of New Hampshire. Department of Civil and Environmental Engineering
Abstract:

At present, New Hampshire Department of Transportation (NHDOT) has adopted AASHTO empirical pavement design approach. This research focused on updating the layer coefficients (a-value) of the asphalt mixtures using different mechanistic and performance based measures. A set of 18 commonly used mixtures in New Hampshire were selected for performance testing and evaluation of structural contribution in terms of layer coefficients. In order to develop the layer coefficients, comprehensive research was performed on the performance and properties of the mixtures through different mechanistic based laboratory testing methods. In addition, mixtures from the New England region were used to develop and validate three novel performance index parameters for rutting, fatigue and transverse cracking. The developed parameters were incorporated with the field distress data such as International Roughness Index (IRI) in order to develop mechanistically informed layer coefficients for New Hampshire flexible pavement design approach.
Format:

PDF
Funding:

26962N, A004(533)
Download URL:

https://rosap.ntl.bts.gov/view/dot/49950/dot_49950_DS1.pdf
File Type:

[PDF - 3.74 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:d0d96a2e7b859ec27068ede441e4f30f6bdac6d827112b776661152a88490fc86bddf5a7b7a1fcf10f31908f2e56b3c60fad5d03edf2da9ec8acb0df550018a5

File Language:

English

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