Q. Shrinkage is the reduction in the volume of a fresh hardened concrete exposed to ambient temp and humidity.

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Q. How many types of shrinkages, caused due to loss of water?

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Q. How many types of shrinkages, caused due to cooling and carbonation?

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Q. Reduction in the volume due to shrinkage causes ____________

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Q. Volumetric strain is equal to ___________ times the linear strain.

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Q. In practice, shrinkage is measured simply as a ____________

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Q. Shrinkage in concrete is caused mainly by a loss of water by evaporation or by hydration of cement.

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Q. Fall of temperature and carbonation may also cause shrinkage.

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Q. It is observed that 14-34% of the 20 years shrinkage occurs in ________

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Q. It is observed that 40-80% of the 20 years shrinkage occurs in _____________

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Q. It is observed that 66-85% of the 20 years shrinkage occurs in _____

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Q. If the concrete is placed in 100% relative humidity for a length of time then there WON’T be any shrinkage.

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Q. The magnitude of autogenous shrinkage is ________

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Q. Which aggregates have high shrinkage?

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Q. Which aggregates have low shrinkage?

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Q. What is plastic shrinkage?

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Q. What is drying shrinkage?

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Q. What is autogenous shrinkage?

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Q. What is carbonation shrinkage?

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Q. ACI 305.R.91 specifies Evaporation rate __ kg/hr/m² should be avoided to prevent plastic cracking.

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