01046026

Component

Open bridge steel deck systems filled with lightweight materials are subjected to various environmental degradations over their service life. Some of those are thermal effects, moisture, alkaline exposure, mechanical or fatigue and ultraviolet radiation. The lightweight materials and steel behave differently under these conditions due to dissimilar physical and mechanical properties. The objective of this research was to address the performance of the filled steel deck systems, and effect of repetitive thermal loads (temperatures below and above normal ambient conditions) to the open steel grid deck systems that were filled with epoxy resin. The deck systems filled with epoxy materials were subjected to thermal change to simulate similar or extreme field conditions. Experimental results found that the performance of the open filled decks were depends on the weather loads. Under high temperatures exposure the interfacial region showed severe delamination compared to low temperature exposure. Also the study found that the performance at the interfacial region was affected by the number of cycles for both low and high temperatures.

01042056

07-1223

English

24p

2007

Transportation Research Board 86th Annual Meeting

CD-ROM

Figures; Photos; References (21)

Bridge decks; Degradation failures; Epoxy resins; Fatigue (Mechanics); Lightweight materials; Mechanical properties; Moisture content; Service life; Steel; Steel structures; Temperature

Long term performance

Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls

Transportation Research Board Annual Meeting 2007 Paper #07-1223

TRIS, TRB

Feb 8 2007 5:50PM