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Questions and Answers
What are the primary reasons for the extensive use of bituminous materials in roadway construction?
What are the primary reasons for the extensive use of bituminous materials in roadway construction?
- Excellent binding characteristics and waterproofing properties (correct)
- Low cost and high resistance to environmental degradation
- Resistance to temperature changes and high melting point
- High strength and durability
What is the main constituent of bituminous materials?
What is the main constituent of bituminous materials?
- High molecular weight hydrocarbons (correct)
- Petroleum oils
- Tar
- Adhesive properties
What is a distinguishing characteristic of bitumen compared to tar?
What is a distinguishing characteristic of bitumen compared to tar?
- Solubility in carbon disulphide (correct)
- Waterproofing properties
- Distinct melting point
- Adhesive properties
What type of bitumen is recommended for surface dressing and patchwork in road construction?
What type of bitumen is recommended for surface dressing and patchwork in road construction?
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What is the approximate bitumen content in bitumen emulsion?
What is the approximate bitumen content in bitumen emulsion?
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What are tars derived from?
What are tars derived from?
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Which type of tar has a high aromatic content and 50% pitch content?
Which type of tar has a high aromatic content and 50% pitch content?
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Where are the biggest deposits of natural asphalt / rock asphalt / lake asphalt found?
Where are the biggest deposits of natural asphalt / rock asphalt / lake asphalt found?
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What is the nature of low aromatic tar?
What is the nature of low aromatic tar?
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What is the maximum Pen value for asphalt found in Trinidad?
What is the maximum Pen value for asphalt found in Trinidad?
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