1.

For hydrated Portland cement, the coefficient of thermal expansion lies between approximately ____________(a) 5.4 * 10^-6 and 12.6 * 10^-6 per ^oC(b) 10.8 * 10^-6 and 16.2 * 10^-6 per ^oC(c) 5.4 * 10^-6 and 10.8 * 10^-6 per ^oC(d) 10.8 * 10^-6 and 12.6 * 10^-6 per ^oCI had been asked this question during an interview.This interesting question is from Thermal Properties topic in division Aggregates and Testing of Aggregates of Concrete Technology

Answer»

The correct choice is (b) 10.8 * 10^-6 and 16.2 * 10^-6 PER ^oC

To explain I would say: The COEFFICIENT of thermal expansion for hydrated PORTLAND cement LIES between approximately 10.8 * 10^-6 and 16.2 * 10^-6 per ^oC.



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