LIQUID LIMIT TEST OF SOIL USING CASAGRANDE APPARATUS(IS-2720-PART-5-1985)

Objective For determination of the liquid limit of soil using casagrande apparatus. Reference Standard IS : 2720(Part 5)-1985- Methods of test for soils : Determination of liquid and plastic limit. Equipment & Apparatus Oven Balance (0.01g accuracy) Sieve [425 micron] Casagrande apparatus Preparation sample  After receiving the soil sample it is dried in air or … Read more

LIQUID LIMIT TEST OF SOIL USING CONE PENETROMETER METHOD(IS-2720-PART-5-1985)

Objective For determination of the liquid limit of soil using cone penetrometer. Reference Standard IS : 2720(Part 5)-1985- Methods of test for soils : Determination of liquid and plastic limit. Equipment & Apparatus Oven Balance (0.01g accuracy) Sieve [425 micron] Cone penetrometer Preparation sample After receiving the soil sample it is dried in air or … Read more

SIEVE ANALYSIS OF SOIL(IS-2720-PART-4-1985)

Objective For determination of particle size distribution of fine, coarse and all-in-aggregates by sieving.  Reference standard IS : 2720 (Part 4) – 1985 – Method of test for soil (Part 4-Grain size analysis) Equipment & Apparatus: Balance Sieves Sieve shaker  Preparation sample After receiving the soil sample it is dried in air or in oven (maintained … Read more

SPECIFIC GRAVITY TEST OF SOIL(IS-2720-PART-3-1980)

Objective For determination of specific gravity of soil solids by pycnometer method. Reference Standard IS : 2720 (Part 4) – 1985 – Method of test for soil (Part 4-Grain size analysis) Equipment & Apparatus Pycnometer Sieve(4.75 mm) Vaccum pump Oven Weighing balance Glass rod Preparation sample After receiving the soil sample it is dried in … Read more

MOISTURE CONTENT TEST OF SOIL(IS-2720-PART-2-1973)

Objective For determination of the moisture content of soil by oven drying method. Equipment’s & Accessories Oven (1050C to 1100C min.) Metal container Balance (0.01 g accuracy) Procedure The number of the container is recorded, cleaned, dried and weighed.(W1) About 15-30 g of soil is placed in the container and the weight of soil with the … Read more

CORRECTION APPLIED TO SPT VALUE

The N-value observed during testing is not utilized directly in assessing soil properties. These values are corrected to account for The overburden pressure Dilatancy in saturated fine sands and silts Correction for overburden pressure The penetration resistance of soil depends on the over burden pressure. At deeper depth in-situ soil will have higher overburden pressure … Read more

STANDARD PENETRATION TEST (SPT) – THEORY

This test involves the measurement of the resistance to penetration of a sampling spoon under dynamic loading The resistance is empirically correlated with some of the engineering properties of soil such as density index, consistency, angle of internal friction, bearing capacity etc. This test is useful for general exploration of erratic soil profile for finding … Read more

SOFTENING POINT OF BITUMEN (IS:1205:1978)

Objective For determination of softening point of a given bitumen.  Reference Standards IS : 1205-1978-Indian standard methods for testing tar and bituminious materials (Determination of softening point) Equipment & Apparatus   Ring and Ball apparatus,  Steel balls  Brass rings  Ball guide    Support  Thermometer  Bath with stirrer  Procedure Sample material is heated to a temperature between … Read more