The results of a standard compaction test are shown in the table below Determine the maximum dry unit weight and optimum water content. 8.1 9.8 11.5 12.3 13.2 Water Content (%) 6.2 18.7 19.5 20.5 20.4 20.1 Bulk unit weight (kN/m') 16.9 (a) What is the dry unit weight and water content at 95% standard compaction? (b) Determine the degree of saturation at the maximum dry density. (c) Plot the zero air voids line. Compute y, and then plot the results of y, versus w (%). Then extract the required information

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Soil Compaction Test

Soil compaction is the major area of geotechnical engineering. Soil is composed of multiple pores present on its surface, while the soil is mainly composed of gravel, sand, rocks, etc. The arrangement of these rocks and gravels is such that they build up voids (spaces) between them, which allows spaces for the roots of the plants and crops to spread and absorb the required amount of nutrients. Soil compaction is a major problem primarily caused by human activities, micro-organisms, and other multiple factors.