Field Evaluation of Methods to Minimize Transverse Glulam Deck Deflection Phase III

Project Details
STATUS

Completed

START DATE

08/15/07

END DATE

12/31/12

RESEARCH CENTERS InTrans, BEC, CTRE, NCWTS
SPONSORS

USDA Forest Products Laboratory

Researchers
Principal Investigator
Terry Wipf

Faculty Affiliate

Co-Principal Investigator
Travis Hosteng

Co-Director, NCWTS

Co-Principal Investigator
Brent Phares

Bridge Research Engineer, BEC

About the research

The objective of the second phase of this project was to conduct full-scale field evaluations of various methods identified in previous research related to differential panel deflection and wearing surface distress in transverse glulam deck panels supported by longitudinal glulam stringers. The purpose of the Phase III study was to determine localized structural performance of the previously constructed demonstration bridge in Delaware County, Iowa to determine the cause of asphalt overlay cracking, assess the appropriateness of the existing asphalt overlay mix, and formulate a new asphalt mix design that performs better on transverse glulam decks.

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