Question
Download Solution PDFThe optimum water content (OWC) is the moisture content at which the soil attains ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Compaction Curve of Soil:
- The compaction curve is the curve drawn between the water content (X-axis) and the Respective dry density (Y-axis). The observation will be Initially an Increased dry density with an increase in the water content. Once it reaches a particular point a decrease in dry density is observed.
- The maximum peak point of the soil compaction curve obtained is called the Maximum Dry density value. The water content corresponds to this point is called the Optimum water content (O.W.C) or Optimum Moisture Content (O.M.C)
- The Graph shown in fig -1 is the compaction curve. Initially for a water content lesser than ( O.M.C ) the soil is rather stiffer in nature that will have lots of void space and Porosity. This is the reason for lower dry density attainment.
Note:
The graph represents a zero-air Void or 100 % Saturation line. This is based on the theoretical maximum dry density where it occurs when there is 100 % saturation. As the condition of zero voids in the soil is not real and a hypothetical assumption, the soil can never become 100 % Saturated
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