Practice Factors Affecting Bituminous Mix Design (13.8)

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10 questions

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6 sample questions

Question 1.
What does aggregate gradation influence in bituminous mixes?
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Think about the relationship between sizes of particles.
Question 2.
What is one common bitumen grade used in pavement?
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Consider typical viscosity grades.
3Question 3.
What is the primary concern with poor aggregate gradation in a bituminous mix?
- Increased air voids
- Reduced strength
- Higher cost
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Think about what bad gradation means for the overall mix.
4Question 4.
True or False: The mixing temperature has no impact on the performance of the prepared bituminous mix.
- True
- False
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Remember how temperature affects viscosity.
Question 5.
Evaluate how different environmental conditions might impact the performance of a bituminous mix in a coastal area.
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Think about how saltwater might affect standard bitumen.
Question 6.
Propose a method to analyze the effects of air void content variations in existing pavements in a rainy climate.
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Consider the role of drainage in pavement performance.

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