everything about asphalt

1. Presented by Muhammad Bilal
Class no:151

2. Asphalt is refined bitumen which is sticky, black
and highly viscous liquid produced from
petroleum during refinery process.
Asphalt is a mixture of aggregates
,binder(bitumen) and filler( something that is
used to fill gaps and cheap like calcium
carbonate)
Basically asphalt is semisolid hydrocarbon
In some regions it is also known as asphalt
concrete

3. Asphalt is produced in asphalt plants this can be
a fixed plant or even in mobile mixing plant.
The average production temperature of asphalt is
between 150C-180C depending on the condition
and environment of the site
Nowadays new techniques are available to
produce asphalt at lower temperatures.

6. There are basically two types of asphalt
Natural and refined
Naturally occurring bitumen is sometimes
specified by the term ‘crude bitumen’
The Canadian province of Alberta has the most of
the world’s reserves of natural bitumen covering
142,000 square kilometers , an area larger than
England.

7. Asphalt mixes are typically composed of 5%
bitumen and 95% of aggregates(stone , sand,
gravel) . It is a complex mixture of
thousands of different organic compounds
mutually dissolved or dispersed.
uses of asphalt:
• The primary use of asphalt (70%) is in road
construction where it is use as a glue or binder.

8. It can also be used for various other purposes like
• Transportation (railway beds , airport runways
etc)
• Recreation ( playgrounds , running tracks ,
tennis courts etc)
• Building construction ( floorings)
• It has water-proofing properties so it can
produce new construction materials having
good water resistance properties.