1. Papworths Glossary Of Terms

2. Visual Assessment  Use grinding core cuts to assess corrosion  Need a standard to define corrosion degree  Correlate with potentials

3. Papworths Corrosion Scale

4. Rebar Classification

5. 40 x Client: Date: Time: Inspector: Scale: Figure -320  10% 50% 90% 40  0.2  Location Plan: Cover meter = 40mm Taped cover = 40mm Sample No 2 - Grinding core cut (GCC) GCC with 40mm taped cover Sample No 2 S2 Sample 2 = 100mm diamond core 100 S2 Electrical potential (mv CuSO 4 ref.) Corrosion risk 90% (>-200mv) 50% (<-200mv) 90% (<-350mv) Drummy/Delamination Spall Spall & remainder is drummy Patch repair Rust stain Leaching (Light, Moderate, Heavy) Crack – Hairline (<0.1mm), Normal (<0.3mm), Moderate ( 3mm) Honeycombing 0.2mm wide crack Crack with light leaching Cracked & drummy Crazing Cold Joint Panel Joint Construction Joint Exposed Rebar – Exposure class A R V WP AP S Rebound hammer test Ultrasonic pulse velocity test Insitu water permeability Insitu air permeability ISAT test A 4 probe Wenner resistivity =8000ohm cm …. 8000 SS Popout – (Small, Medium, Large) L TestsCracks Defects Samples L Surface etching (Light, Moderate, Heavy) L Reinforcement Spall, rebar exposed Spall, rebar exposed, 40mm cover 40  Line of buried reinforcement, cover=40mm 40 x Line of buried reinforcement, cover=40mm, bar=20mm 40 x 20 Structure: Location: Consequence: 1 2 3 4 5 Likelihood: 1 2 3 4 5 Testing: Design Notes: Cover: Rebar  V: H: Strength Grade: Note features on drwg.