22.2.2 - Hardness
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Practice Questions
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What is hardness in the context of aggregates?
💡 Hint: Think about what happens to softer materials when they are used in pavements.
Name one method used to test aggregate hardness.
💡 Hint: Consider the context of vehicles and friction.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary function of hardness in pavement materials?
💡 Hint: Think about the challenges that vehicles pose to road materials.
True or False: Hard aggregates can prolong the lifespan of pavements.
💡 Hint: Consider the relationship between material durability and pavement longevity.
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Challenge Problems
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Consider a construction project planning to use soft aggregates due to availability. Analyze the long-term implications of this choice for pavement durability.
💡 Hint: Think about the consequences in terms of repair frequency and safety issues.
Suppose you are tasked with selecting materials for a new roadway. How would you justify the need for hard aggregates to stakeholders?
💡 Hint: Consider cost-effectiveness and long-term benefits when presenting arguments.
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