Properties and Applications of Asphalt

Asphalt, also known as bitumen, is a black, sticky petroleum product used in various applications due to its viscoelastic properties. Historically, it served as a waterproofing and adhesive agent in ancient civilizations like the Indus Valley and Egypt. Today, asphalt is primarily used in road construction, forming asphalt concrete with aggregates. Mastic asphalt, with higher asphalt content, is used for waterproofing. Asphalt can also be emulsified for low-temperature applications, aiding in cost-effective pavement solutions.

What is the origin of the word 'asphalt'?

• It originates from the Egyptian word 'asphalt'.

• It comes from the Latin word 'asphaltus'.

• It is derived from the Greek word 'as paltos'.

• It is a modern term with no historical origin.

In ancient times, how was asphalt used in the Indus Valley?

• As a decorative material.

• For waterproofing and as an adhesive.

• For building roads.

• As a fuel source.

What was the purpose of using asphalt in the construction of the Euphrates Tunnel?

• To provide structural support.

• To make it waterproof.

• To reduce construction costs.

• To enhance its aesthetic appeal.

What percentage of asphalt cement is typically found in asphalt concrete?

• 10%

• 25%

• 5%

• 15%

How are asphalt emulsions typically used in road construction?

• As a primary road surface.

• As a decorative layer.

• To increase road friction.

• To create low-cost pavements.