What is the minimum thickness multiplier relative to the maximum aggregate size?

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Multiple Choice

What is the minimum thickness multiplier relative to the maximum aggregate size?

Explanation:
In asphalt paving, the thickness of a layer is tied to the largest aggregate used in the mix. The standard rule is that the minimum layer thickness should be 1.5 times the nominal maximum aggregate size (NMAS). This ensures the largest particles have enough space to be properly embedded and compacted, allows the binder to adequately coat all particles, and promotes a durable, well-graded surface. So, if the NMAS is, for example, 1 inch, the minimum thickness would be 1.5 inches. A thickness equal to the NMAS (1x) would be too thin for proper compaction and coating; multiplying by 1.25x is generally not the standard requirement, and using 2x would be thicker than needed without providing additional, necessary performance.

In asphalt paving, the thickness of a layer is tied to the largest aggregate used in the mix. The standard rule is that the minimum layer thickness should be 1.5 times the nominal maximum aggregate size (NMAS). This ensures the largest particles have enough space to be properly embedded and compacted, allows the binder to adequately coat all particles, and promotes a durable, well-graded surface.

So, if the NMAS is, for example, 1 inch, the minimum thickness would be 1.5 inches. A thickness equal to the NMAS (1x) would be too thin for proper compaction and coating; multiplying by 1.25x is generally not the standard requirement, and using 2x would be thicker than needed without providing additional, necessary performance.

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