alleryStart learning →Per the source, three thermal properties of aggregates are named; the one most important for day-to-day concreting work is:
ASpecific heat capacity
BCoefficient of expansion
CThermal conductivity
DHeat of vaporisation
Answer & Solution
Correct answer: B. Coefficient of expansion
1. §2.2.13 lists thermal properties as Coefficient of expansion, Specific heat, and Thermal conductivity, and adds: 'it is only the coefficient of expansion which is of importance to us for our day to day concreting work.'
2. Specific heat and thermal conductivity matter mainly in mass construction or light-weight concrete.
_Source: IGNOU ET-522 Block-1 Unit-2 Aggregates, §2.2.13, p. 25_
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