What is the coefficient of thermal expansion and how is it used with regard to concrete masonry?

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Quizplus · Accepted Answer

The Answer is The coefficient of thermal expansion is used to calculate the amount of expansion that can be expected as temperatures change. Concrete masonry units expand when heated and contract when cooled. These changes are reversible, and the unit returns to its original size after the temperature returns to the point at which the change started. Since the aggregate makes up about 80 percent of a unit, the coefficient of expansion of the aggregate is a major factor influencing expansion and contraction of the concrete masonry unit.

What Is the Coefficient of Thermal Expansion and How Is