GFRP Bridge Deck Panel

Detection of Bridge Deck

Delamination is probably the most serious form of deterioration I which is commonly found in britlge decks. It ultimately results in large scale spalling necessitating costly repairs. This type of failure is believed to be caused chiefly from salt induced corrosion of the reinforcing steel. An instrument designed to detect delamination, and tests conducted to val:iAate its perf'ormance, are .br...

Bridge Deck Deicing

Concrete bridge decks are prone to ice accumulation. The use of road salts and chemicals for deicing is cost effective but causes damage to concrete and corrosion of reinforcing steel in concrete bridge decks. This problem is a major concern to transportation officials and public works due to rapid degradation of existing concrete pavements and bridge decks. The use of insulation materials for ...

Development of Self-stressing System for Bridge Application with Emphasis on Precast Panel Deck System

Detecting Deterioration behind Gfrp Wrap Strengthning of Bridge Columns

A radar NDE (nondestructive evaluation) technique using an airborne antenna operating in the far-field condition is developed for detecting damages such as delamination and concrete cracking in GFRP (glass fiber reinforced polymer)-wrapped concrete columns. The far-field airborne radar (FAR) NDE technique is advantageous for distant measurement of bridge columns in practical applications. Far-f...

Comparative Study of Deconvolution Algorithms for GPR Bridge Deck Imaging

Bridge decks deteriorate over time as a result of freezing-and-thawing, heavy use, and water penetration resulting in internal defects. Ground penetrating radar (GPR) can be used as a non-destructive method for detecting such defects. Unfortunately, reflections from closely spaced objects overlap which prevents the accurate estimation of the round-trip travel time of GPR waves to the closely sp...