Soil Mass is the complex mixture of mainly three Particle called Water, Air, Solid. the first two particles generally fill in a porous structure. Which is formed due to space creation between solid particle. For a better understanding of particle arrangement, we see each particle separately in form of Diagram. this separation of solid, air, water called three phase diagram system of soil . now Question is What its use in soil . and the answer, it helps to find one of the most important Relations in soil engineering. so today we talk about volumetric type relation ( Void ratio , porosity of soil , degree of saturation, percentage air voids, air content). with three phase diagram of soil fig show actual soil mass and soil in form of a three phase diagram For easy understanding, we write volume part on left and mass part on the right of the diagram. When weight considers instant of mass, its written on the right side. Vv = volume of voids Va= volume of air Vw= volume of water Vs= v...
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