Practice Factors Affecting Durability (8.1) - Classification of Plastics

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9 questions

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6 sample questions

Question 1.
What is UV degradation?
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Think about the sun and its effect on materials.
Question 2.
Define thermal aging.
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Consider how heat and cold might affect materials.
3Question 3.
What does UV degradation do to plastics?
- Makes them stronger
- Causes discoloration and brittleness
- Has no effect
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Remember the effect of prolonged sun exposure.
4Question 4.
Thermal aging can lead to which of the following?
- True
- False
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Consider temperature changes and their effects on materials.
Question 5.
A contractor wants to utilize PVC in a coastal environment where UV exposure is high. Propose a design approach that includes measures to combat UV degradation.
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Consider what technologies can be employed for outdoor applications.
Question 6.
Analyze the impact of temperature variations on a plastic bridge component and suggest design features to maintain integrity.
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Think about structural elements that allow movement without compromising safety.

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