STUDY LESSON:-31 [CIVIL ENGINEERING]
For Competitive exams/Railway jobs/Semester exam/Self Study Purpose
1. __________ involves a measurement of the time travel of electronically generated mechanical pulses through the concrete.
2. Plowman's co-efficient is used to define ___________ of concrete.
a) Strength b) Durability c) Maturity d) Soundness
3.(Weight of Partially compacted concrete/Weight of Fully compacted concrete) = ___________
4. The ___________ test is adopted to observe the compatibility of superplasticizer and cement.
5. The measurement of materials for making concrete is also termed as ___________
6. Lowest amount of ___________ ratio is a fundamental requirement of a Durable dense and impermeable concrete
a) water-cement b) strength c) volume d) None of these
7. Buoyancy method is adopted to determine____________
a) flow-ability b) Density c) Work-abilty d) Fineness
8. ___________can be seen over a long period of time if it is placed in a lower relative humidity
9. _____________ is termed a the change in unit length per degree change of temperature.
10. Calcium Nitrate, Flousilicates are known as ___________
Answers:-
1. Ultrasonic Pulse velocity
2. c) Maturity
3. The compacting factor
4. Marsh cone test
5. Batching
6. a) water-cement
7. b) Density
8. drying Shrinkage
9. Co-efficient of thermal expansion
10. Accelerating Plasticizer
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