What is the specific gravity of asphalt?

Because the specific gravity of asphalt binders change with temperature, specific gravity tests are useful in making volume corrections based on temperature. The specific gravity at 15.6° C (60° F) is commonly used when buying/selling asphalt cements. A typical specific gravity for asphalt is around 1.03.

What is the specific density of asphalt?

Standard density for asphalt is 145 lb/ft³ (2322 kg/m³). Multiply the volume by the density (in the same units) to get the weight.

How do you calculate bulk specific gravity of asphalt?

Gmb = bulk specific gravity of compacted mixture. (KT-15) Ps = aggregate, percent by total dry weight of mixture. Calculation using data from Table 1 and section 3.2. VMA = 100 - (2.344 x 93.04) 2.652 = 100 - 82.23 = 17.77 Calculation using data from Table 1 and section 3.2.

How do you test the specific gravity of asphalt?

The bottle is immersed till the neck in the water bath maintained at 27 ± 0.1 °C temperature for 30 minutes. The outer surface of the bottle is wiped with a dry cloth to clean it. The specific gravity bottle filled half with bitumen and half with distilled water is weighed. The weight is noted as d.

What is the unit weight of asphalt?

Asphalt Mixture typically weighs from 142 to 148 pounds per cubic foot (PCF) in-place. Use 148 PCF. Calculate the tonnage needed. (remember to convert from pounds to tons; 2000 pounds per ton).

SCM (5): Gravity model optimization

How do you calculate asphalt weight?

Multiply Volume by the Density

To determine how much asphalt you will need for the project, multiply the area's cubic feet measurement by 148 PCF. For example, if the area is 40 cubic feet, then the formula is: 40 cubic feet x 148 PCF = 5,920 pounds of asphalt mix.

How is asphalt weighed?

Concrete and asphalt weights are based on the square footage and thickness of the material. On average, a cubic yard of solid concrete weighs 4,050 pounds (~2 tons), or 150 pounds per cubic foot. Solid asphalt weighs slightly less at 3,960 pounds per cubic yard.

Is 1202 specific gravity of bitumen?

This test is done to determine the specific gravity of semi-solid bitumen road tars, creosote and anthracene oil as per IS: 1202 – 1978. The principle is that it is the ratio of mass of a given volume of bitumen to the mass of an equal volume of water, both taken at a recorded/specified temperature.

What is bulk specific gravity of asphalt?

Typical values for bulk specific gravity range from 2.200 to 2.500 depending upon the bulk specific gravity of the aggregate, the asphalt binder content, and the amount of compaction. Absorption should typically be below 2 percent.

What is GMM and GMB in asphalt?

• Gmb= bulk specific gravity of the mixture. • Gmm= theoretical maximum specific gravity of the mixture.

What is GSB in asphalt?

Gsb = bulk specific gravity of aggregate. Gb = specific gravity of asphalt. Calculation using bulk and effective gravities determined in sections 3.2.

What does GMB mean in asphalt?

BULK SPECIFIC GRAVITY (Gmb) OF COMPACTED HOT MIX ASPHALT (HMA) USING SATURATED SURFACE-DRY SPECIMENS.

What is BRD in asphalt?

Bulk density and void content

Known as BRD, this test determines the density of the hot mix asphalt mix after compaction.

What is the compressive strength of asphalt?

Most pavement PCC has a compressive strength between 20.68 and 34.47 MPa (3000 and 5000 psi) (ACPA, 2001). High-strength PCC (usually defined as PCC with a compressive strength of at least 41.37 MPa (6000 psi)) has been designed for compressive strengths of over 137.90 MPa (20,000 psi) for use in building applications.

How many m3 are in a tonne of asphalt?

The following density conversion factors for estimating the amount of material needed once compacted are: Granular A & B = 2.4 tonnes/m3. ¾” Clear Stone = 1.8 tonnes/m3. Asphalt – 2.5 tonnes/m3.

How do you calculate tons of asphalt?

Is code for specific gravity of bitumen?

according to Indian Standard (BIS) minimum specific gravity of paving bitumen at 27°C shall be 0.99 for grades A25, A35, A45, A65, S35, S45 and S65 , 0.98 for A90 and S90 and 0.97 for A200 and S200.

What is the difference between bulk density and specific gravity?

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.

What is the specific gravity of water?

Water has a specific gravity equal to 1. Materials with a specific gravity less than 1 are less dense than water, and will float on the pure liquid; substances with a specific gravity more than 1 are more dense than water, and will sink.

What is viscosity of bitumen?

The standard penetration value of bitumen viscosity grade VG-20 is 60 mm at 25 °C. The absolute viscosity of VG-20 bitumen is 1600 to 2400 poise at 60 °C.

What is viscosity ratio of bitumen?

Bitumen is graded by viscosity at 60°C. For the purpose of this standard, the definitions given in IS 334 and the following shall apply. 3.1 Viscosity Ratio — It is the ratio of viscosity of residue from rolling thin film oven test to unaged bitumen, both measured at 60°C.

What is the density of bitumen?

The density of bitumen is 1.01-1.05 g/cm 3 in the temperature range of 25°C to 85°C [63] .

What does 1 CY of asphalt weigh?

1 cubic yard of asphalt weighs around 4,050 pounds and 1 ton of asphalt weighs about 2,000 pounds, so, number of tons of asphalt in a yard = 4050 ÷ 2000 = 2 tons approx. Thus, there are 2 tons in one cubic yard of asphalt.

What is the density of hot mix asphalt?

The density of the compacted mix is its unit weight, or the weight of a specific volume of mix. For compacted HMA, this is approximately 145 pounds per cubic foot. Density is particularly important because high density of the finished pavement is essential for long term pavement performance.