Hi. here is your lab report ;)
Experiment No. 9
The activity aims to introduce the concept of compaction and the relationship of
moisture content to the dry unit weight of the soil.
2. Intended Learning Outcomes (ILOs):
The students shall be able to:
Connect the significance of compaction test in other properties of soil.
determine the relative density of soils by compaction test.
describe the use of water in relation to the dry density of the soil.
Soil Compaction is generally the cheapest method of improving the engineering properties of
the soil. In compaction, the soil solids are forced to a tighter state in order to achieve a higher
unit weight and reduce the air voids.
The process of compaction is better understood by comprehension of the behavior of a soil mass
under compaction. In a dry condition, the frictional resistance of the soil would resist granular
rearrangement; therefore, the compacting force is not quite effective. Introduction of a lubricant
such as a predetermined amount of water is mixed, would then be absorbed by soil particles,
forming minutely thin and coherent water films around the particles. In this condition, the soil
particles will readily move closer together under the compacting pressure d ue to the lubricating
effect of water and reduced frictional resistance.
Compaction mold ...
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