Concrete Technology Questions and Answers – Elastic Properties of Aggregates

This set of Concrete Technology Multiple Choice Questions & Answers (MCQs) focuses on “Elastic Properties of Aggregates”.

1. Clay minerals are found in most _________
a) Igneous Environment
b) Sedimentary environment
c) Metamorphic environment
d) In all environment
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2. Theoretical value for bulk modulus of clay __________
a) 20 and 50 GPa
b) 30 and 40 GPa
c) 100-150 GPa
d) 200 GPa
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3. Young’s modulus for dickite is ___________
a) 5.2 GPa
b) 6.2 GPa
c) 7.2 GPa
d) 8.2 GPa
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4. The grain density of the clay powders was measured using _______
a) Hydrostatic pressure
b) Cylindrical cavity
c) Pycnometer
d) Helium porosimeter
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5. To avoid trapped air produced by clay flocculation, we used ___ in distilled water.
a) (NaPO₃)₆
b) Na₄P₂O₇
c) Na₅P₃O₁₀
d) PO₄
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6. For the cold-pressed aggregate samples, porosity, bulk and grain densities were measured with __________
a) Hydrostatic pressure
b) Cylindrical cavity
c) Pycnometer
d) Helium porosimeter
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7. IS 456 of 2000 gives the modulus of elasticity as _______
a) E_c = 5000 fck^.5
b) E_c = 5000 fck²
c) E_c = 5000 fck³
d) E_c = 5000 fck^1/3
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8. What are elastic strains?
a) These are the instantaneous deformations that occur when an external stress is first applied
b) These deformations occur either on loss of moisture from the concrete on cooling of concrete
c) It is the time-dependent deformation that occurs on the prolonged application of stress
d) Any one or combinations of the above types of deformations in a hardened concrete leads to cracking
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9. Static modulus of elasticity of concrete has been related to its ________
a) Tensile strength
b) Compressive strength
c) External strength
d) Applied force
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10. If the value of f_ck is 100 then what will be the modulus of elasticity?
a) 5000
b) 500
c) 50000
d) 50
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Sanfoundry Global Education & Learning Series – Concrete Technology.

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