An SSD condition implies the aggregate contains large amounts of free water on its surface.

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Multiple Choice

An SSD condition implies the aggregate contains large amounts of free water on its surface.

Explanation:
SSD stands for saturated surface dry. It means the aggregate’s pores are filled with water, but the surface is dry, so there isn’t free water on the outer surface. This condition helps ensure the aggregate’s surface won’t contribute extra moisture to the mix and distort asphalt content tests. So saying there are large amounts of free water on the surface is not correct; the surface stays dry even though internal moisture is present.

SSD stands for saturated surface dry. It means the aggregate’s pores are filled with water, but the surface is dry, so there isn’t free water on the outer surface. This condition helps ensure the aggregate’s surface won’t contribute extra moisture to the mix and distort asphalt content tests. So saying there are large amounts of free water on the surface is not correct; the surface stays dry even though internal moisture is present.

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