Determination of specific gravity of soil conclusion
Answers
In conclusion, the determination of soil water content is to show gravimetricmeasurement of soil water content is based on removal of water from the sample.Sample water is removed by evaporation, leaching or chemical reaction. Oncesample water is removed, the amount of water removed from the sample isdetermined and used to calculate soil moisture content. Determination of watercontent removed is done using several methods. The simplest method todetermine water content removed is by measurement of loss of weight of thesample. Sample water content can also be determined by collection of the waterthrough distillation or absorption in a desiccant. Extraction of substances whichreplace sample water and measurement of a physical or chemical property of theextracting material that is affected by water content is another method. Finally,sample water content can be determined by quantitative measurement of reactionproducts displaced from a sample. In each of these methods the water and soil areseparated and the amount of water removed is measured or inferred. Oven dryingis the most widely used of all gravimetric methods. The oven dry method is thestandard for the calibration of all other soil moisture determination techniques.
The knowledge of specific gravity is needed in calculation of soil properties like void ratio, degree of saturation etc. Specific gravity G is defined as the ratio of the weight of an equal Valium of distilled water at that temperatures both weights taken in air.