The main purpose of using a concrete core sample is to determine
Correct answer: D. The in-place condition and strength of hardened concrete
- A. The slump of concrete before placing
- B. The initial setting time of freshly mixed cement paste
- C. The grading of fine aggregate in a stockpile
- D. The in-place condition and strength of hardened concrete
Explanation
A drilled core provides a physical sample of hardened concrete for examination and, when properly tested, an estimate of in-place strength. Setting time, grading, and slump are measured by separate procedures.
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About Concrete Technology
Concrete technology covers cement, aggregates, water and admixtures, including their properties, proportioning and effect on fresh and hardened concrete. It explains workability, water-cement ratio, setting, hydration, strength, durability, curing, mix design and common defects, while distinguishing segregation and bleeding from general loss of workability.
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