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Kevin MacDonald

Kevin MacDonald

Kevin MacDonald PhD, PE, FACI is the principal engineer with Beton Consulting Engineers in Minnesota. His practice focuses on durability of infrastructure, mass concrete, and production of concrete with high replacement levels. He is a member of several ACI and ASTM committees. He is a licensed professional engineer in Minnesota and Ontario Canada. Contact MacDonald via email.

Kevin MacDonald's Posts

Repairing Dust-Covered Concrete

There are several repair options for dust on concrete. Read more

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Preventing Dust on Concrete

Dusting of slabs has several causes but always results when a layer of weak paste sits at concrete’s surface. Read more

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ASTM Standards ASTM Standardsdswedbyyvzwsuaycvvzybbuc

Why are ASTM standards important and why should concrete producers pay attention and follow them? Read more

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Aggregate Gradation Matters

How we buy and sell aggregate is quite different, and it can lead to trouble. Most specifications require coarse and fine aggregate to conform to the requirements, including the gradation, of ASTM C33. Read more

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Low Concrete Compressive Strength and Cores

ACI 301 gives direction to what is to be done in the event compressive strength results have fallen below the specified strength. Read more

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