ACI Aggregate Base Testing Technician Practice Test

Question: 1 / 400

The definition of maximum density pertains to what measurement?

Moisture content

Oven-dry density

The definition of maximum density specifically relates to the oven-dry density of a material, often soil or aggregate. Maximum density refers to the highest degree of compaction achievable for a given material under standardized conditions, such as moisture content.

In laboratory tests, like Proctor tests, the maximum density is determined by compacting the material in a controlled environment and measuring its density when dry. This provides a consistent baseline that aids in assessing how well the materials can be compacted in the field.

While moisture content, compaction level, and weight of soil are important factors in the overall understanding of soil behavior and compaction, they individually do not define maximum density as clearly as oven-dry density does. The oven-dry density serves as the reference point against which the effectiveness of various compaction efforts can be measured and compared.

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Compaction level

Weight of soil

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