Soils Lab 3

Soils Lab 3 - Brendan McKeon, 2/15/10 Experiment 3:...

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Brendan McKeon, 2/15/10 Experiment 3: Moisture – Unit Weight Relationships (Soil Compaction Test) Purpose In this lab we will conduct a Standard Proctor Test. The results of a Standard Proctor Test can be used to create a compaction curve that establishes the relationship between water content and dry unit weight for a soil. Equipment The Standard Proctor Test compaction apparatus: Procedure Before the compaction test begins a set of tares must be weighed so that soil may be added to them later. The collar is attached to the base of the mold. Then an arbitrary amount of soil is added to the mold and compacted with the hammer. The standard proctor test requires 25 drops of the hammer for three layers of soil. The hammer drops should be evenly distributed so that the compaction energy is even. After the soil has been compacted the collar is removed and the filled mold is weighed. Then two soil samples are taken from the top and bottom of the mold and weighed in the previously weighed tares. These tares are then dried in an oven and weighed once again to find the dry weight of the soil. The compaction test for the Standard Proctor Test requires results that are both dry of optimum and wet of optimum.
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This note was uploaded on 02/24/2010 for the course ENG W2018 taught by Professor Niccolas during the Spring '10 term at Columbia.

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Soils Lab 3 - Brendan McKeon, 2/15/10 Experiment 3:...

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