Soil Mechanics Lecture 9 Quiz

The principle of compaction involves the application of mechanical energy to reduce air void spaces in the three-phase soil model, leading to densification of soils. It reduces the air content but not the water content.

Increasing compaction leads to the following advantages: increase in soil strength and bearing capacity, decrease in potential for settlement, controlled undesirable volume changes, decrease in hydraulic conductivity, and increase in stability of embankment slopes.

Compaction involves the reduction of air void spaces in soils to increase their density, while consolidation refers to the gradual settlement of soils under load.

<p>The standard Proctor test considers dry density (rd), water content (w), compactive effort (energy E), and soil type (gradation, presence of clay etc.) in determining compaction.</p> Signup and view all the answers

<p>The standard Proctor test uses ASTM D 698 standards, a 1/30 ft3 (943.3 cm3) mold with a diameter of 4 inches (101.6 mm), a 5.5 lb (2.45 kg) hammer, and a 12-inch (305 mm) drop.</p> Signup and view all the answers