Aim To determine shear strength parameters of the given soil sample by conducting unconsolidated undrained (UU) triaxial shear test. Theory And Application Triaxial testing is a test used to measure the shear parameters of a given soil. The test is performed on a cylindrical soil/rock samples. This test is considered to be the most conveniently … Read more
Aim To determine the relative density or density index of cohesionless soil Theory Relative density is also known as density index. It is defined as the ratio of difference between the void ratio of a cohesionless soil (i.e. sand) in the loosest state and any given void ratio to the difference between its void ratios … Read more
Aim To determine the field density of soil at a given location by sand replacement method Reference IS-2720-Part-28-Determination of dry density of soils in place, by the sand replacement method Apparatus Sand pouring cylinder Calibrating can Metal tray with a central hole Dry sand (passing through 600 micron sieve) Balance Moisture content bins Glass plate … Read more
Aim To determine the field density of soil by core cutter method Reference IS-2720-Part-29-Determination of dry density of soil in place by the core-cutter method Apparatus Cylindrical core cutter Steel rammer Steel dolly Balance Steel rule Spade or pickaxe Straight edge Knife Procedure Measure the height (h) and internal diameter (d) of the core cutter … Read more
The principle terms used by civil engineers to describe soils are Gravel (particle size larger than 4.75 mm) Sand (particle size within 4.75 mm to 0.075mm) Silt & Clay (particle size less than 0.075mm) Most natural soils consist of a mixture of two or more of these constituents and may contain an admixture of organic … Read more
The embankments are constructed with locally available soils, provided it fulfils the specified requirements. Procedure of compaction to be adopted will depend on the type of soil being used in construction. General guidelines to deal with compaction of various types of soils for attaining optimum dry density/relative density at minimum effort, have been briefly given … Read more
On Site Identification of Silt & Clay The distinction between silt & clay cannot be based on particle size because the significant physical properties of the two materials are related only indirectly to the size of particles. Furthermore, since both are microscopic, physical properties other than particle size must be used as criteria for field … Read more
Soil in an engineering sense is a relatively loose agglomerate of mineral and organic materials and sediments found above bedrock. Texturally the soil is divided into two primary groups. Coarse grained soil Fine grained soil The behavior of coarse grained soil is different from fine grained soil. The method of describing coarse grained soil is … Read more
Objective For determination of free swell index of soils Reference Standard IS: 2720(Part 40)-1985- Methods of test for soils: Determination of free swell index of soil. Equipment / Apparatus Oven(1050C to 1100C, min) Balance (0.01g accuracy) Sieve [425 micron] Graduated glass cylinder [100ml capacity] Preparation sample The soil passing 425 micron sieve is used in … Read more
Objective For determination of linear shrinkage of soil Reference Standard IS: 2720(Part 20)-1966- Methods of test for soils: Determination of linear shrinkage. Equipment / Apparatus Mould Oven Preparation sample A sample weighing 150g from thoroughly mixed portion of bulk material passing 425 micron IS sieve is prepared. Procedure The mould is thoroughly cleaned and a … Read more