Ultrasonic pulse velocity testing of concrete is primarily useful for assessing its
Correct answer: D. Uniformity and internal defects
- A. Initial setting time
- B. Cement fineness before mixing
- C. Exact water-cement ratio
- D. Uniformity and internal defects
Explanation
Ultrasonic pulse velocity helps identify variations in quality, cracks, voids and internal discontinuities in hardened concrete. It may be related to strength, but it does not directly determine the exact water-cement ratio or cement fineness.
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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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