Design for Service Life, Bridge Birth Certificate & Concrete ...
Design for Service Life, Bridge Birth Certificate & Concrete ...
Design for Service Life, Bridge Birth Certificate & Concrete ...
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Structural vs. Durability Issues<br />
In-<strong>Service</strong> Use<br />
Work Item<br />
Structural Issues<br />
Durability Issues<br />
Routine Visual Inspections<br />
(Biennial – required by law)<br />
In-Depth Monitoring (every 7-7<br />
10 years)<br />
Assessment<br />
Rehabilitation/Intervention<br />
Dismantling<br />
To detect obvious defects<br />
with minimal testing<br />
Reactive – Identify problem<br />
areas as they occur (<strong>Concrete</strong><br />
Cracks & Spalls, Rein<strong>for</strong>cing<br />
Corrosion, Joint and Bearing<br />
failure)<br />
Change in Use/Loading or<br />
After Significant Event<br />
(Earthquake, Hurricane,<br />
Flood, Fire, Explosion,<br />
Truck/Ship Impact)<br />
Replace/Repair/Strengthen<br />
damaged structural<br />
components<br />
Demolish & Remove Waste<br />
Same as structural<br />
Proactive – Testing to monitor<br />
in-service conditions (chloride<br />
diffusion coefficient, chloride<br />
profiles, chloride surface<br />
concentration)<br />
Assess Remaining <strong>Service</strong> <strong>Life</strong><br />
of Components<br />
Per<strong>for</strong>m Corrosion Surveys -<br />
Add Corrosion Protection<br />
Systems (Galvanic, Cathodic<br />
Protection, or Electrochemical<br />
Systems)<br />
Recycle & Re-Use Materials<br />
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