NHS Innovative Pavement Design Study

Pavey, Andrew

i

NHS Innovative Pavement Design Study

2022-05-01
By Pavey, Andrew

File Language:

English

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Alternative Title:

National Highway System Innovative Pavement Design Study
Creators:

Pavey, Andrew
Corporate Creators:

Alaska. Department of Transportation and Public Facilities. Statewide Engineering Services
Corporate Contributors:

Alaska. Department of Transportation and Public Facilities. Research and Technology Transfer ; United States. Department of Transportation. Federal Highway Administration ; Alaska. Department of Transportation and Public Facilities Central Region Materials
Subject/TRT Terms:

Aggregates Binder Content Mix Design National Highway System NHS Nordic Abrasion Paving Prall Rutting Studded Tires Thermal Degradation
Publication/ Report Number:

HFHWY00077, FHWA-AK-RD-4000(174)
Resource Type:

Tech Report
Geographical Coverage:

Alaska ; United States
Contracting Officer:

Bingham, Newton
Corporate Publisher:

Alaska. Department of Transportation and Public Facilities. Research and Technology Transfer
Abstract:

This research investigated the history and performance of hot mix asphalts (HMA) used by Alaska DOT&PF. The history and changes of HMA used between the 1970’s and 2022 was documented, and currently used mixes were evaluated using pavement management data to determine the rut and transverse (thermal) cracking rates by mix and binder types. Prall testing, used to simulate studded tire wear, and Hamburg testing to determine rut deformation and stripping potential were used on a combination of lab and field mixes. Falling Weight Deflectometer (FWD) testing was performed on recently constructed projects to document fall season modulus values for HMA, base and subbase layers. It was found that the newly implemented PG64-40E binder is providing superior rutting resistance than the previously used PG58-34E binder at low and moderate speeds, the use of a hard aggregate specification is reducing the rate of studded tire rutting, and lower voids in HMA (increasing density) is improving its fatigue cracking and rut resistance. Improving HMA compaction plays a very important role in the longevity of our pavements.
Format:

PDF
Funding:

HFHWY00077, FHWA-AK-RD-4000(174)
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:1141888f62356565177295f06bb78c5cbda33f6ad6c3066d12efac16536f6247
Download URL:

https://rosap.ntl.bts.gov/view/dot/62346/dot_62346_DS1.pdf
File Type:

[PDF - 20.54 MB ]

File Language:

English

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