GATE CE 2026 Set 1 — Question 61
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Transportation Engineering → Bitumen & Mix Design → Marshall Mix Design
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Question
In a bituminous mix, the percentage by weight of coarse aggregate, fine aggregate, filler, and bituminous binder is , , , and , respectively. The corresponding specific gravity of these materials is , , , and . The bulk specific gravity of the mix is . The Voids Filled with Bitumen (VFB, in percentage) is __________ (rounded off to the nearest integer).
Correct answer
48 to 52
Solution
1.Calculate Theoretical Maximum Specific Gravity ():
2.Calculate Air Voids ():
3.Calculate Volume of Bitumen ():
4.Calculate Voids in Mineral Aggregate ():
5.Calculate Voids Filled with Bitumen ():
Rounding to the nearest integer gives .Continue learning with Success Tracker
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