26.3.6 - Voids filled with bitumen VFB
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Practice Questions
Test your understanding with targeted questions
Define Voids Filled with Bitumen (VFB).
💡 Hint: Think about how much space bitumen occupies in aggregates.
What is the formula to calculate VFB?
💡 Hint: Look for what Vb and VMA represent.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does VFB stand for?
💡 Hint: Focus on what VFB directly refers to in mix design.
True or False: A higher VFB percentage indicates better performance.
💡 Hint: Consider the balance needed in asphalt mixes.
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Challenge Problems
Push your limits with advanced challenges
If a mix has a Vb of 22% and a VMA of 25%, calculate VFB and explain what a VFB of 88% implies for the performance of this mix.
💡 Hint: Consider the balance between bitumen volume and aggregate structure.
Discuss the implications if a project's VFB is found to be consistently below 70%. What corrective actions might be recommended?
💡 Hint: Think about how changes to the mix can influence VFB calculations.
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