What is the apparent specific gravity?
Apparent Specific Gravity: The ratio of the weight in air of a unit volume of the impermeable portion of aggregate (does not include the permeable pores in aggregate) to the weight in air of an equal volume of gas-free distilled water at the stated temperature.
How do you calculate specific gravity?
Specific gravity is determined by dividing the density of a material by the density of water at 4 degrees Celsius. For the calculation, the density of the material and that of the water must be expressed in the same units.
How do you find apparent 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.
What is GSA specific gravity?
Apparent Specific Gravity (Gsa)– the ratio of the mass, in air, of a volume of the impermeable portion of aggregate to the mass of an equal volume of gas-free distilled water at a stated temperature.
What is apparent and absolute specific gravity?
Answer:True specific gravity is the ratio of unit weight of soil solids to that of water. But apparent specific gravity is the ratio of unit weight of total soil mass to that of water.
How do you calculate specific gravity of fine aggregate?
Procedure of Test
- Take about 500g of sample and place it in the pycnometer.
- Pour distilled water into it until it is full.
- Eliminate the entrapped air by rotating the pycnometer on its side ,the hole in the apex of the cone being covered with a finger.
- Wipe out the outer surface of pycnometer and weigh it (W)
How do you calculate specific gravity of urine?
subtracted if lower than the calibration temperature. For example, if the specific gravity of the urine is 1.022 at 23oC, and the urinometer has been calibrated at 20 oC, the correct reading is 1.022+0.001= 1.023.
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).
What is the difference between apparent specific gravity and bulk specific gravity?
The bulk or volume specific gravity is based upon the volume as a whole–i.e., the solid material with all included pores. The apparent specific gravity is based upon the volume of the solid material plus the volume of the sealed pores.
What is the difference between specific gravity and apparent specific gravity?
What is SSD specific gravity?
Bulk SSD Specific Gravity: The ratio of the weight in air of a unit volume of aggregate, including the weight of water within the voids filled to the extent achieved by submerging in water for approximately 15 hours, to the weight in air of an equal volume of gas-free distilled water at the stated temperature.
Is code for specific gravity of coarse aggregate?
The specific gravity of coarse aggregate as per is code is 2.5 to 3. The water absorption of aggregate ranges from 0.1 to 2%.