- A clean, dry pycnometer is taken and its empty weight is determined.
- About 1000g of clean sample is taken into the pycnometer, and it is weighed.
- Water at 27 0 C is filled up in the pycnometer with aggregate sample, to just immerse sample.
Why is aggregate specific gravity calculated?
Aggregate specific gravity is needed to determine weight-to-volume relationships and to calculate various volume-related quantities such as voids in mineral aggregate (VMA), and voids filled by asphalt (VFA).
What is the specific gravity of aggregate?
Specific Gravity is defined as the ratio of Weight of Aggregate to the Weight of equal Volume of water . The specific gravity of an aggregate is considered to be a measure of strength or quality of the material. Aggregates having low specific gravity are generally weaker than those with high specific gravity.
What is the density of aggregate?
| Sr. No. Materials Name Density | 2. Sand or Fine Aggregate 1450 to 2082 kg/m 3 | 3. Bricks 1600 to 1920 kg/m 3 | 4. Steel 7850 kg/m 3 | 5. Coarse aggregate or Gravel 2850 to 2960 kg/m 3 |
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What is specific gravity of concrete?
Specific Gravity of Concrete
Generally, the specific gravity of cement ranges from 3.1 to 3.16 g/cc . From this we can say that the specific gravity of cement is more than the specific gravity of water that is 1. It means cement will sink in water if we put on the water.
Why do we test specific gravity?
A urine specific gravity test compares the density of urine to the density of water . This quick test can help determine how well your kidneys are diluting your urine. Urine that’s too concentrated could mean that your kidneys aren’t functioning properly or that you aren’t drinking enough water.
What is absolute specific gravity?
[′ab·sə‚lüt spə′sif·ək ′grav·əd·ē] (mechanics) The ratio of the weight of a given volume of a substance in a vacuum at a given temperature to the weight of an equal volume of water in a vacuum at a given temperature .
What is the use of specific gravity of aggregate?
Specific gravity is critical information for the Hot Mix Asphalt Design Engineer. The value is used in calculating air voids , voids in mineral aggregate (VMA), and voids filled by asphalt (VFA). All are critical to a well performing and durable asphalt mix.
What is crushing value of aggregate?
Aggregate crushing value is defined as the percentage by weight of the crushed (or finer) material obtained when the test aggregates are subjected to a specified load under standardized conditions, and the strength of the aggregate used in road construction is expressed by numerical index.
What is the relationship between specific gravity of aggregate and strength?
Specific Gravity is defined as the ratio of Weight of Aggregate to the Weight of equal Volume of water . The specific gravity of an aggregate is considered to be a measure of strength or quality of the material. Aggregates having low specific gravity are generally weaker than those with high specific gravity.
What is the weight of aggregate?
1 cft stone ( aggregate) weight in kg:-Density of aggregate (stone) is vary from 1420 Kg/m3 to 1680 Kg/m3 ,consider density of aggregate (stone) 1600 Kg/m3, it means 1m3 stone weight is 1600kgs,1m3 = 35.3147 cft, so 35.3147 cft aggregate (stone) is equal to 1600 kg, then 1 CFT stone (aggregate) weight in kg 1600/35.3147 ...
What is the weight of 1m3 aggregate?
Weight of aggregate per cubic meter:- density of aggregate is ranging from 1420 Kg/m3 to 1680 Kg/m3 ,so weight of aggregate per cubic metre is vary from 1420kgs to 1680kgs. 20 mm aggregate density:- density of 20 mm aggregate is 1550 kg/m3, it means 1 cubic metre of 20 mm aggregate weight is 1550 kg.
What is the density of type 1 aggregate?
| Size Type Density m3 Compacted | 0/31.5mm Type 1 Granular Sub-Base SHW803 2200Kg/m3 | 0/31.5mm Type 3 Granular Sub-Base SHW805 2200Kg/m3 |
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Is specific gravity a concrete number?
Generally, the specific gravity of cement ranges from 3.1 to 3.16 g/cc . From this, we can say that the specific gravity of cement is more than the specific gravity of water that is 1. It means cement will sink in water if we put it on the water.
What is difference between density and specific gravity?
Density is defined as mass per unit volume. It has the SI unit kg m – 3 or kg/m 3 and is an absolute quantity. Specific gravity is the ratio of a material’s density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m – 3 ). It is therefore a relative quantity with no units.
What do you mean by specific gravity?
Specific gravity, also called relative density, ratio of the density of a substance to that of a standard substance . ... Because it is the ratio of two quantities that have the same dimensions (mass per unit volume), specific gravity has no dimension.
