Case Study 1: Cracking in Deck of Reinforced Concrete Railway Bridge, Denmark.
Problem: Structural cracking due to alkali-aggregate reaction in 1-m thick reinforced deck of railway bridge.
Results: Impact-Echo tests detected horizontal cracking at mid-depth over entire span.
Verification: Cores (and mode of failure during demolition).
Outcome: Bridge judged unsafe and demolished. When first hit with wrecking ball, lower half of deck separated almost as one piece, and fell to the ground.