How do you calculate the specific gravity of concrete?

W3 = weight of flask + cement + kerosene. W4 = weight of flask + kerosene. 0.79= specific gravity of kerosene. Limit: Specific gravity of cement = 3.15 g/cc.

What is the typical value of specific gravity of portland cement concrete?

around 3.15
Specific gravity is normally used in mixture proportioning calculations. The specific gravity of portland cement is generally around 3.15 while the specific gravity of portland-blast-furnace-slag and portland-pozzolan cements may have specific gravities near 2.90 (PCA, 1988).

How do you find the specific gravity of a stone?

Divide the mass of the rock by its volume to calculate the density of the rock. In our example, the density is 20.4/8 = 2.55 g/cubic cm. Divide the rock density by the density of water to calculate the specific gravity.

What is specific gravity determination?

Services Specific Gravity Determination Specific gravity is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.

Is code specific gravity of cement?

Specific gravity test /Density of Cement test : As per Le Chatelier’s Principle, Specific gravity of cement is determined by Le Chatelier’s Flask method. And the IS code for Specific gravity test is IS 2720- Part 3.

What is the specific gravity of Portland cement?

How to determine specific gravity of cement?

The specific gravity of cement value will be determined by using Le-Chatelier Flask Method. It is a lab test experiment to identify the value. Note – Usually, water will be used as reference material for any specific gravity determinations.

What is the value of specific gravity of water?

The baseline for specific gravity is that of water, which weighs 1 tonne per cubic metre, giving an S.G. of 1.0. Specific gravity is the ratio of the weight of an object over that of an equivalent volume of fresh water.

How do you find the volume of a concrete mix?

The absolute volume of a concrete mix can be determined if the weight and bulk specific gravity of the components are known. For a concrete mix with 90-lbs of coarse aggregate with Gs = 2.65, 60-lbs of fine aggregate with Gs = 2.63, 25-lbs of cement, and 12-lbs of water the absolute volume is computed as follows: CA FA Cement Water

What is the specific gravity of a 90 lb sample?

specific gravity of material x unit weight of water For example, the specific gravity of a dry coarse aggregate (Gs) is 2.65. The unit weight of water is 62.4-lb/cu ft. The absolute volume of a 90-lb sample of the aggregate is: Absolute Volume = 90 lb / (2.65 x 62.4 lb/cu ft) = 0.544 cu ft.