alleryStart learning →The portable instrument used for measuring ultrasonic pulse velocity through concrete with a digital output is known as:
APUNDIT
BSchmidt hammer
CVee-Bee consistometer
DPulvex tester
Answer & Solution
Correct answer: A. PUNDIT
1. Ultrasonic pulse velocity is measured by sending a pulse from one transducer through concrete and timing its arrival.
2. The standard portable digital instrument is the Portable Ultrasonic Non-destructive Digital Indicating Tester (PUNDIT).
3. It weighs no more than 3 kg, with a timing accuracy of 0.1 microsecond.
4. The Schmidt hammer and Vee-Bee consistometer are unrelated devices for rebound and workability.
5. Pulvex is not a recognised tester.
_Source: IGNOU ET-522 Concrete Technology, Block 2 Unit 9 "Testing of Concrete"._
Keep practising Testing of Concrete
Browse all Testing of Concrete questions for B.Tech Civil, or explore more Civil Engineering topics.
Related questions
Fill the IS-code numerical values into the standard concrete specifications.Pick the pulse-velocity reading that points to a HIGHER concrete quality (Leslie–Cheesman)Tap the word in each statement that is wrong, then read the correction.Tap the cube compression test procedure in the correct order.Swipe each test LEFT if it acts on fresh concrete, RIGHT if it acts on hardened concrete.Match each non-destructive test instrument to what it measures on concrete.Match each concrete test to the property it primarily measures.Using the Leslie–Cheesman classification (Table 9.1), a pulse velocity reading of 3800 m/s