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Flexible Pavement Lecture 7: Preventive Treatments

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Questions and Answers

What is the purpose of applying a fog seal on a pavement?

To resist oxidation and prevent raveling (correct)
To enhance the structural integrity of the pavement
To apply a thick layer of asphalt emulsion
To fill large cracks and potholes

What is the main advantage of slurry seal overlays?

Thick layer of asphalt emulsion application
Long duration of construction
Heavy traffic suitability
Fast application and correction of minor defects (correct)

What is the primary purpose of chip seal application?

To fill large potholes
To apply a thick layer of asphalt binder
To enhance skid resistance properties (correct)
To improve surface friction

What is the importance of cleaning and drying the pavement before applying preventive treatments?

To ensure the pavement is porous enough to absorb asphalt emulsion (B) Signup and view all the answers

What is the primary benefit of using slurry seal grades Type I, Type II, and Type III?

Protection from oxidation and water damage (B) Signup and view all the answers

What is the significance of aggregate gradations in chip seal application?

To provide a single size coarse crushed aggregate (A) Signup and view all the answers

What is the purpose of applying a high-quality aggregate and polymer-modified emulsion binder in a micro-surfacing application?

To increase the stability and stiffness of the pavement (D) Signup and view all the answers

What is the typical thickness range of a thin overlay?

3/4 to 1-1/2 inch (B) Signup and view all the answers

What is the purpose of sweeping the pavement surface?

To remove loose aggregate (C) Signup and view all the answers

What is the purpose of rolling the aggregate?

To seat the aggregate into the asphalt (C) Signup and view all the answers

What is the purpose of applying a micro-surfacing overlay?

To improve friction and prevent raveling (C) Signup and view all the answers

What is the purpose of chip sealing?

To seal the pavement and prevent raveling (C) Signup and view all the answers

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