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Topics Covered:
- Problems with fresh concrete
- Variations in slump
- Rapid slump loss
- Variation in air content
- Admixture incompatibility
- Finishability issues
- Plastic shrinkage cracking
- Problems with slabs
- Abrasion loss
- Carbonation
- Cracking and crack control
- Curling
- Discoloration
- Drying shrinkage
- Joint failure
- Placement of reinforcement
- Popouts
- Scaling
- Surface delaminations
- Problems with vertical concrete
- Air surface voids (bug holes)
- Form offsets
- Form sticking
- Honeycombing
- Streaking layer lines
- Lift lines/cold joints
- Low Concrete Strength Problems
- Variation in concrete materials
- Batching and delivery issues
- Cronstruction practices
- Testing issues
- Load tests
- Field and laboratory techniques used in concrete problem solving
- Visual observation
- Non-destructive testing
- Sample procurement and documentation
- Petrography studies
- Chemical analysis
