Questions

Can you achieve 100\% compaction?

Can you achieve 100\% compaction?

Because conditions in the field do not match the ideal conditions in a laboratory, the target compaction is scaled to a percentage of the dry density determined in the lab. This can range from 90 percent to over 100 percent.

How do you achieve soil compaction?

Soil compaction is achieved through static or dynamic force and manipulation of the soil. Static force make use of the dead weight of machines to apply downward, continuous pressure to increase compaction through compression of the top of the soil.

Is it possible for the relative compaction to be greater than 100 \%? Why or why not?

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In fact, relative soil compaction test results over 100\% do not necessarily mean over-compaction because the relative compaction is based on the maximum dry density of the soil obtained by the Proctor test and this does not necessarily refer to absolute maximum dry density.

How do you calculate compaction ratio?

Divide the volume of the loose trash by the volume of the compacted trash to achieve the compaction ratio. As an example, 16 cubic feet of loose trash compacted into a 4 cubic feet volume would have a ratio of four, or four to one.

What type of soil is best for compaction?

Soil and Moisture Cohesive (clay), granular (sand) and organic (for planting) are the three basic soil groups, but only two of these—cohesive and granular—are suitable for compaction. Cohesive soils have particles that stick together, while granular soils crumble easily.

How do you calculate compaction percentage?

Dry density is calculated by dividing the weight of the wet soil by its water content in percent. The percent compaction for the field density test is calculated by dividing the dry density of the soil by the maximum dry density from the proctor test.

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What’s the best method for compacting fill?

For large fill areas, rolling is the fastest, most efficient compaction method. Hand-held compactors can be used in smaller areas and for places that larger mobile equipment can’t reach. For granular soils, vibrating plate compactors work best. Rammers or impact type machines are used for cohesive soils.

Is compaction of soil beyond 100\% modified compaction possible in field?

In field compaction, some times the compaction rate exceed 100\% can be accepted because the sample used in laboratory compaction may not represent the materials in site (i.e. contains more fine).

How is field compaction measured?

The percent compaction for the field density test is calculated by dividing the dry density of the soil by the maximum dry density from the proctor test.

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