What is the specific gravity of aggregate?
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.
How do you calculate specific gravity of aggregate?
Overview. The coarse aggregate specific gravity test (Figure 1) is used to calculate the specific gravity of a coarse aggregate sample by determining the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. It is similar in nature to the fine aggregate specific gravity test.
Why is aggregate specific gravity calculated?
Specific gravity test of aggregates is done to measure the strength or quality of the material while water absorption test determines the water holding capacity of the coarse and fine aggregates. The main objective of these test is to, To measure the strength or quality of the material.
What is apparent specific gravity?
2.1 Apparent Specific Gravity—Apparent specific gravity is the ratio of the weight in air of a given volume of the water impermeable portion of a permeable material at a stated temperature to the weight in air of an equal volume of distilled water at a stated temperature.
What is the difference between the density and specific gravity?
Density is defined as mass per unit volume. 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 is the purpose of specific gravity test?
Significance and Use Knowing the specific gravity will allow determination of a fluid’s characteristics compared to a standard, usually water, at a specified temperature. This will allow the user to determine if the test fluid will be heavier or lighter than the standard fluid.
What is the difference between density and relative?
Density is by definition the ratio of the mass and volume of a body. Relative density is the ratio between the density of a measuring substance and the density of some other reference substance at a given temperature (typically water).
Is density equal to specific weight?
Definition. The density of the material is defined as mass per unit volume, typically measured in kg/m3. The standard gravity is acceleration due to gravity, usually given in m/s2, and on Earth usually taken as 9.81 m/s2. Unlike density, specific weight is not a fixed property of a material.
What is the specific weight of kerosene?
Specific gravity is simply the ratio of the specific weight of a given liquid to the specific weight of water at 4° C (γwater = 9.81 kN/m3 or 62.4 lb/ft3)….©Kurt Gramoll.
| 20°C (68°F) 1 atm | Density, ρ | |
|---|---|---|
| Gasoline | 680 | 1.319 |
| Glycerin | 1,260 | 2.445 |
| Kerosene | 804 | 1.560 |
| Mercury | 13,550 | 26.29 |
How do you convert density to specific weight?
Multiply the density by the acceleration of gravity (9.81) to calculate the specific weight. In our example, the specific weight is 840 x 9.81 = 8,240.4. Measure or obtain elsewhere the volume of the substance.
How do you calculate specific volume?
Formula for Specific Volume Specific volume equals volume divided by mass. Typically, volume is measured in cubic meters (m3), and mass is measured in kilograms. Specific volume is then calculated as volume divided by mass.
How do you find the mass with density and volume?
Divide the mass by the density of the substance to determine the volume (mass/density = volume). Remember to keep the units of measure consistent. For example, if the density is given in grams per cubic centimeter, then measure the mass in grams and give the volume in cubic centimeters.
What is the formula of the Mass?
One can consider the mass of an object as a measure of how much physical “stuff” makes up that object. mass=density×volume (m=ρV). Density is a measure of mass per unit of volume, so the mass of an object can be determined by multiplying density by volume.
What is the formula to find the mass?
Determine mass with force and acceleration. Newton’s second law of motion states that force equals mass times acceleration: F = ma. If you know the net force on the object, and it’s acceleration, you can rearrange this formula to find the mass: m = F / a.
Is mass and volume the same?
Mass is how much stuff something is made of. Volume is how much space an object takes up.
How do you find the radius?
Just remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of the circle is 3.5 feet. You can also use the circumference and radius equation.
How do you find the radius if you have the length and width?
The radius is the length from the center of a circle to the edge. Therefore, if you know the radius, multiply it by two to determine the diameter (diameter = 2 x radius).
What is the length of a radius?
1. A line from the center of a circle to a point on the circle. The radius of a circle is the length of the line from the center to any point on its edge.
How do you convert radius to length?
How to find the length of an arc and sector area: an example
- Decide on the radius of your circle.
- What will be the angle between the ends of the arc?
- Calculate the arc length according to the formula above: L = r * θ = 15 * π/4 = 11.78 cm .
- Calculate the area of a sector: A = r² * θ / 2 = 15² * π/4 / 2 = 88.36 cm² .
How do you find the diameter without the radius?
Divide the circumference (perimeter) by pi. That gives you the diameter. Half of that is the radius. To get the area, square the radius, and then multiply by pi.
What are the formulas for circles?
Formulas Related to Circles
| Diameter of a Circle | D = 2 × r |
|---|---|
| Circumference of a Circle | C = 2 × π × r |
| Area of a Circle | A = π × r2 |
What is the relation between radius and diameter?
First, note the definition of radius and diameter. The radius is one-half the diameter or the diameter is twice the length of the radius.