June 17, 2013

Cold Region Concrete Innovation Featured in AK Dispatch

Filed under: News — Joel Bailey

After a recent national report stirred concern about bridge infrastructure, the Alaska Dispatch features a story about an ‘Alaska-grown’ concrete innovation with the potential to revolutionize bridge deck preservation.  With commentary from INE, the Alaska Department of Transportation and Public Facilities, and Anchorage-based company Apun, the article illustrates how collaborative partnerships can yield major innovations for cold regions and beyond.

June 7, 2013

Advancing Design Standards for Maritime Infrastructure

Filed under: News — Joel Bailey

The latest edition of TR News (No. 285), a national publication of the Transportation Research Board, features a full-length article by AUTC researcher Andrew Metzger. In it, he outlines his work partnering with the Alaska and Washington State marine highway systems on innovative research that is improving design standards for state engineers. (more…)

May 30, 2013

Save the Date: Aug. 4-7 ISCEPGI at UAF

Filed under: News — Joel Bailey

The International Symposium of Climatic Effects on Pavement and Geotechnical Infrastructure (ISCEPGI) will be held on August 4-7, 2013, at the University of Alaska Fairbanks. The symposium aims to provide a showcase of recent developments and advances and offers an international forum to discuss Climatic Effects on Pavement and Geotechnical Infrastructure.  Learn more here. (more…)

May 21, 2013

ADN Features UAF-UAA Research Partnership

Filed under: News — Joel Bailey

The Anchorage Daily News featured a story in its recent Sunday edition about how UAF and UAA are partnering to help the Alaska Department of Transportation and Public Facilities address a peculiar loosening of high-mast light posts around Anchorage and the Kenai Peninsula. A statewide research organization, AUTC works through its counterparts at UAF, UAA, and UAS to address transportation challenges that, in this case, have both cost and public safety implications for Alaska. Read the story here.

May 17, 2013

MPC and Alaska’s Bridge Decking Innovation

Filed under: News — Joel Bailey

Preserving infrastructure assets in Alaska is fraught with extreme challenges, most often borne by the region’s harsh and variant climates. Bridge decking—the focus of multiple AUTC studies—has become an increasingly important area of interest for Alaska DOT&PF. It has also risen to the fore of national transportation policy, as pavement and bridges have become a focus of one of seven target areas for Congress’ recently enacted funding under Moving Ahead for Progress in the 21st Century Act (MAP-21).[1] For Alaska, these concerns are not new. (more…)

May 6, 2013

UAF Steel Bridge Team Wins 4 Regional Titles

Filed under: News — Joel Bailey

A fabled tradition, the UAF Student Steel Bridge Competition Team recently returned from  Corvallis, Oregon, at the 2013American Society of Civil Engineers’ Pacific Northwest Regional competition, where they took four winning titles, including best in the General Excellence Award. (more…)

April 25, 2013

Frank Moolin Mega-Project Lecture Series

Filed under: News — Joel Bailey

The University of Alaska Fairbanks College of Engineering and Mines and the Alaska Society of Professional Engineers are co-sponsoring the Frank P. Moolin Jr. Seminar Series on Mega-Project Management in Juneau (May 8), Anchorage (May 14), and Fairbanks (May 23). (more…)

March 19, 2013

AUTC Featured in TR News

Filed under: News — Joel Bailey

The new edition of TR News (No. 284), features a full-length story by AUTC Director Billy Connor and Communication Specialist James Harper. (more…)

February 25, 2013

AUTC Winter Newsletter Now Available

Filed under: News — Joel Bailey

AUTC’s Winter Newsletter is now available on the publications page, or by downloading here. (more…)

February 11, 2013

AUTC Ph.D. Student, Anthony Mullin, Presents at TRB

Filed under: News,Project Update

Evaluating the Need to Seal Thermal Cracks in Alaska’s Asphalt Concrete Pavements

By: Anthony Mullin

The Alaska Department of Transportation & Public Facilities (AKDOT&PF) has promoted routine sealing (or in severe cases, patching) of all cracks in asphalt concrete (AC) pavements for many years. Crack sealing is a common maintenance practice for all pavement types in most areas of the United States.  Based on many field observations made by AKDOT&PF research engineers over the preceding 30 years, a conjecture had developed that certain crack types may sometimes be ignored, i.e., left completely unsealed, for the life of the pavement with no negative effects.  The research conducted for this study represents the first attempt in Alaska to verify or reject this conjecture through a systematic field study of a significant portion of Alaska’s paved highway system.  While only thermal cracks are the subject of speculation data was collected on other types of cracks and pavement surface distresses as well.  The field study was limited to one year and was conducted on interconnecting roads to include the Richardson, Alaska, Glenn, Tok Cutoff, Steese, Elliot, Parks, and Sterling.  Evaluations were performed on 91 sections 0.1 mile long and are a minimum of 20 years old.  The methods of evaluation were PASER, LTPP, and a Special Thermal Crack Evaluation system.  These methods are qualitative, quantitative, and include many photographs with documented observations.  References for the literature review describe fracture energy being a discriminating parameter to compare different asphalt mixes.  Much has been written on the comparison of sealing techniques and materials but few references discuss how crack sealing affects metrics for overall ride quality.  Finally, suggestions are given on what type and condition of thermal cracks to seal or not seal.  It is the opinion of the authors that lessor thermal cracks in Interior Alaska do not need to be sealed.  It is also suggested to perform further research on pre-saw cutting asphalt pavements such as had been done successfully in Fairbanks over 25 years ago.




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