What is specific gravity PDF?
Specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. Bulk density is weight of a unit volume of a material to the same volume of water including voids. Discover the world’s research.
How do you calculate density and specific gravity?
Specific gravity is a ratio of the density of a substance to the density of a reference substance, usually water. Since the density of water is one gram per cubic centimeter, you calculate specific gravity by dividing the density of a substance by one gram per cubic centimeter.
What is specific gravity method?
The specific gravity of the solid is the ratio of its weight in air to the difference between its weight in air and its weight immersed in water. Two methods are commonly used for determining the specific gravities of liquids. One method uses the hydrometer, an instrument that gives a specific gravity reading directly.
What is specific gravity example?
For example, liquid mercury has a density of 13.6 kg per litre; therefore, its specific gravity is 13.6. The gas carbon dioxide, which has a density of 1.976 grams per litre under standard conditions, has a specific gravity of 1.53 (= 1.976/1.29).
How do you calculate specific gravity of aggregate?
Apparent Specific Gravity of Aggregates: It is calculated by measuring the weight of the oven-dry aggregate divided by its absolute volume excluding the natural voids in the aggregate particles.
How do you calculate dry density from specific gravity?
Calculate the dry density using the following equation: Dry Density (pcf) = Wet Density (pcf) – Moisture Content (pcf). 9.1. Report the moisture content of the soil to the nearest 0.1 percent and the moisture content of aggregate base materials to the nearest 0.1 pound per cubic foot.
How pycnometer measure specific gravity?
To determine the specific gravity of soil solids by Pycnometer bottle method. Specific gravity is the ratio of the mass of unit volume of soil at a stated temperature to the mass of the same volume of gas-free distilled water at a stated temperature.
What units are used for specific gravity?
Specific gravity is a dimensionless quantity; that is, it is not expressed in units. To find the sp gr of a solid or liquid, you must know its density in kilograms per meter cubed (kg/m3) or in grams per centimeter cubed (g/cm3). Then, divide this density by the density of pure water in the same units.
What is the difference between gravity and specific gravity?
The ratio of mass per unit volume is known as the density of a liquid. On the other hand, specific gravity refers to the relative density of a fluid with respect to another liquid (usually water)….Difference Between Density and Specific Gravity.
| Density | Specific Gravity |
|---|---|
| The dimensional formula of density is [M L-3]. | It is a dimensionless quantity. |
What are some ways to calculate specific gravity?
Method 3 of 3: Calculating Specific Gravity by Density Obtain the density for the liquid in question. The density of a substance is equal to its mass divided by its volume. Obtain the density of an identical volume of water. Between -10 degrees Celsius and +30 degrees Celsius, the density of water can be rounded to 1.00 (assuming 3 significant Keep your liquids the same temperature.
What is the equation for specific gravity?
Equations for Specific Gravity. The specific gravity (SG) is a ratio of the density of the substance of interest (ρ i) to the density of the reference substance (ρ r). (Note: The Greek symbol rho, ρ, is commonly used to represent density.) That can be determined using the following formula: SG = ρ i ÷ ρ r = ρ i / ρ r.
How do you calculate specific gravity of gas?
To find the specific gravity of a gas, you must know its density in kilograms per meter cubed (kg/m 3). Then, divide this density by the density of dry air at standard temperature and pressure.
What is used to measure specific gravity or relative density?
Method 1 of 3: Measuring Specific Gravity with a Hydrometer Pour a sample of your liquid into a container. Make sure that the liquid in the container is deep enough to allow the hydrometer to float. Check that your liquid is the correct temperature. Your hydrometer will be calibrated to a specific temperature. Place the hydrometer in the liquid. Read the specific gravity from the hydrometer.