Explain Atterberg’s limits of consistency with neat sketch.
Atterberg’s Limit of consistency:
Liquid limit (WL): It is minimum water content at which two separated grooved soil parts mixed together under 25 blows of casagrande’s liquid limit apparatus; is called as liquid limit.
Plastic limit (Wp): It is minimum water content at which soil begins to crumble into parts when it is rolled into 3 mm diameter thread; is known as plastic limit.
Shrinkage limit (Ws): It is maximum water content at which there is no reduction in volume of soil due to further decrease in water content is termed as shrinkage limit.