alleryStart learning →Per §7.6.4, the three types of shrinkage recognised in hardened-concrete deformation are:
APlastic, drying and carbonation
BElastic, plastic and dynamic
CSetting, hardening and creep
DLinear, surface and volumetric
Answer & Solution
Correct answer: A. Plastic, drying and carbonation
1. §7.6.4 opens: 'Three types of shrinkage are recognised namely plastic, drying and carbonation shrinkage.'
2. Plastic shrinkage occurs while concrete is still in the plastic state and is caused by water loss to evaporation, absorption by aggregates or the subgrade.
_Source: IGNOU ET-522 Block-2 Unit-7 Strength of Concrete, §7.6.4, p. 60_
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