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For hydrated Portland cement, the coefficient of thermal expansion lies between approximately ____________

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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 ^oC

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This interesting question is from Thermal Properties topic in division Aggregates and Testing of Aggregates of Concrete Technology

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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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