Canadian Council of Independent Laboratories (CCIL) Practice Exam 2026 - Free CCIL Practice Questions and Study Guide

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What is the initial curing temperature range for concrete?

10 to 20 degrees C

15 to 25 degrees C

The initial curing temperature range for concrete is typically recommended to be between 15 to 25 degrees Celsius. This temperature range is crucial for ensuring that the hydration process of the cement occurs efficiently, leading to the development of strength and durability in the concrete.

At temperatures lower than 15 degrees Celsius, the curing process can slow down significantly, which might affect the strength gain of the concrete. Conversely, temperatures above 25 degrees Celsius can lead to rapid evaporation of moisture from the surface of the concrete, which may cause cracking and other issues during the curing phase. Therefore, maintaining the concrete within this optimal temperature range encourages proper curing conditions, contributing to the overall integrity of the concrete structure.

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20 to 30 degrees C

25 to 35 degrees C

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