What is Liquid Limit of Soil? When water is added to dry soil, it changes its state of consistency from hard to soft. If we add water to a fine grained soil, then water will change its consistency from hard to semi hard. If we continue to add more water then again the soil will … Read more
Objective For determination of specific gravity of soil solids by pycnometer method. Equipment & Apparatus Pycnometer Sieve(4.75 mm) Vacuum pump Oven Weighing balance Glass rod Preparation sample After receiving the soil sample it is dried in oven at a temperature of 105 to 1150C for a period of 16 to 24 hours. Procedure Dry the … Read more
California Bearing Ratio or CBR test is the ratio of the force per unit area required to penetrate a soil mass with a standard circular piston of 50 mm dia, at the rate of 1.25 mm/min to that of force required to penetrate sample of compacted stone having CBR of 100%. The standard load corresponding … Read more
Objective To determine moisture content and dry density relationship using heavy compaction or modified compaction method as per IS-2720-Part-8. Apparatus • Metal mould (volume = 1000 cm3) • Balance (capacity = 10 kg, least count = 1g) • Oven (105 to 1100C) • Sieve (19 mm) • Metal rammer (weight = 4.9 kg) Procedure Dry … Read more
Objective Determination of CBR of soil either in undisturbed or Remoulded condition Reference Standards IS: 2720(Part 16)-1973- Methods of test for soils: Laboratory determination of CBR. Equipments / Apparatus Compression machine Proving ring, Dial gauge, Timer Sampling tube Split mould Vernier caliper, Balance Preparation sample The test may be performed (a) On undisturbed soil specimen … Read more
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
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