Grade of concrete and design process

Question

Accepted Answer

Grade of concrete is a measure of its strength. Design process involves selecting the appropriate grade based on the intended use.

Grade of concrete is denoted by a number, such as M20 or M30, which represents its compressive strength in megapascals (MPa)
Design process involves determining the required strength, durability, and workability of the concrete based on the intended use and environmental conditions
Factors such as water-cement ratio, aggregate size and type, and curing methods are considered during the design process
For example, a high-strength concrete with a grade of M50 may be used for a bridge or high-rise building, while a lower grade such as M20 may be suitable for a residential driveway

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