What is the standard 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.
What is the best way to check density of asphalt?
Using a digital density meter The standard test method (ASTM D8188) requires a digital density meter to measure the asphalt/bitumen samples. A density meter requires less sample volume (around 3 mL to 4 mL, which is about half the amount needed by pycnometers).
Why is asphalt density important?
DENSITY OF ASPHALT CONCRETE – HOW MUCH IS NEEDED? Density is one of the most important parameters in construction of asphalt mixtures. A mixture that is properly designed and compacted will contain enough air voids to prevent rutting due to plastic flow but low enough air voids to prevent permeability of air and water.
What is bulk density 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.
How is road density calculated?
Road density can be determined by simply dividing the length of road in a polygon by the area.
What is the compaction percentage of asphalt?
What is the recommended air void content for compaction of asphalt pavements? Efforts should be made to control compacted air voids between 7% and 3%. At 8% or higher, interconnected voids which allow air and moisture to permeate the pavement, reducing its durability.
What is highway density?
Road density is the ratio of the length of the country’s total road network to the country’s land area. The road network includes all roads in the country: motorways, highways, main or national roads, secondary or regional roads, and other urban and rural roads. 166 sq. Km.
What is street density?
The Street Density indicator calculates the length of street per square mile or square kilometer. Highways, freeways, interstates, and other non-walkable streets can be excluded from this calculation by providing an input for the optional Excluded Streets attribute.
What is asphalt compaction?
For asphalt mixtures, compaction locks the asphalt-coated aggregate particles together to achieve stability and provide resistance to deformation (or rutting) while simultaneously reducing the permeability of the mixture and improving its durability.
What is the weight of 1m3 of asphalt?
Asphalt – 2.5 tonnes/m3.
What is the unit of bulk density?
Bulk density is the weight of a volume unit of powder and is usually expressed in g/cm3, kg/m3, or g/100 ml. Bulk density is usually determined by measuring the volume of 100 g of powder in a 250 ml graduated cylinder after exposure to compaction by standardized tapping.