The specific gravity test is made on that portion of soil which passes the No. Unless or otherwise specified specific gravity values reported shall be based on water at 27 0 C. So the specific gravity at 27 0 C = K ´ Sp.
Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer 1 PRINCIPLE: Specific gravity is the ratio of the weight in air of a given volume of a material at a standard temperature to the weight in air of an equal volume of distilled water at the same stated temperature. 1.2.
EXPERIMENT 4 SPECIFIC GRAVITY DETERMINATION Purpose: This lab is performed to determine the specific gravity of soil by using a pycnometer. 1.1. For more accurate result it is recommended to conduct tests 3 times on the same soil sample. The determinination of specific gravity of soil will help in the calculation of void ratio, degree of saturation and other different soil … Pycnometer Method: Pycnometer method is used to determine the specific gravity of coarse-grained soils. Slag particles with more specific gravity are stabler and stronger. The specific gravity of a given material is defined as the ratio of the weight of a given volume of the material to the weight of an equal volume of distilled water.
Specific gravity is the ratio of the weight in air of a given volume of a …
The specific gravity of Sand is used for applications including Superpave mix design, deleterious particle identification and separation, and material property change identification.
5.2 SPECIFIC GRAVITY TEST Specific gravity tests of soils shall be performed in accordance with AASHTO T-100.
4 sieve portion in accordance with California Test 206. Average specific gravity = (Gs 1+Gs 2)/2 = 2.6474.
Most Indiana soils have specific gravities ranging between 2.60 to 2.75. If G k is the specific gravity of kerosene at the test temperature, the equation will be G= [(M2-M1) Gk] / [(M2-M1)-(M3-M4)] Sometimes, other liquids, such as paraffin, alcohol and benzene are also used.Density bottle method is suitable for fine grained soils; with more than 90% passing 2mm IS sieve. Testing for specific gravity with this method is fast, easy, and accurate.
It is clear from (table 1) in the theory part that the test was done on a sand sample of soil …
The soil to be used in the specific gravity test may contain its natural moisture or be oven-dried.
Best of all it requires no expensive equipment. Determine the specific gravity of the passing No. Specific gravity determines the heaviness or lightness of a material with reference to a standard material. Specific gravity of soil test is discussed here. A knowledge of the particle density is essential in relation to other soil tests.
Introduction . Courses > Soil Mechanics > Geotechnical Laboratory and In-Situ Testing Methods > Specific Gravity of Soils. In the future, when you are confronted with an unknown mineral species, try this test and you will be amazed at how helpful the results are at narrowing the possibilities. 2.Samples containing natural moisture: a. The test is repeated and the average of two test results is reported as the specific gravity.
Particle density or specific gravity is a measure of the actual particles which make up the soil mass and is defined as the ratio of the mass of the particles to the mass of the water they displace. Specific gravity is also useful for soil mineral classification and hydrometer analysis.
The Pycnometer is used for determination of specific gravity of soil particles of both fine grained and coarse grained soils. gravity at T x 0 C. The specific gravity of the soil particles lie with in … The weight of the test sample on an oven-dry basis must be at least: 125 g when the 500 mL flask is to be used, 25 g when the 100 mL flask is to be used, and 10 g when the 50 mL stoppered bottle is to be used.
Density bottle method.
This test is done to determine the specific gravity of fine-grained soil by density bottle method as per IS: 2720 (Part III/Sec 1) – 1980. Specific gravity (G) of soil can be described as ratio of weight of given volume of soil at a given temperature to the weight of equal volume of distilled water at that temperature, or in other words, ratio of unit weight of soil to that of water.