GATE CE 2014 Set 2 — Question 60
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Transportation Engineering → Bitumen & Mix Design → Marshall Mix Design
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Question
In a Marshall sample, the bulk specific gravity of mix and aggregates are and respectively. The sample includes of bitumen (by total weight of mix) of specific gravity . The theoretical maximum specific gravity of mix is . The void filled with bitumen (VFB) in the Marshall sample (in ) is ___________
Correct answer
62 to 66
Solution
Given data:
Weight of aggregate () =
Step 3: Calculate Voids Filled with Bitumen (VFB):The calculated value falls within the official range of to .
- Bulk specific gravity of mix () =
- Bulk specific gravity of aggregates () =
- Bitumen content () = (by total weight of mix)
- Specific gravity of bitumen () =
- Theoretical maximum specific gravity of mix () =
Weight of aggregate () =
Step 3: Calculate Voids Filled with Bitumen (VFB):The calculated value falls within the official range of to .
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