GATE CE 2015 Set 1 — Question 41
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Structural Engineering → Construction Materials → Concrete Mix Design
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Question
The composition of an air-entrained concrete is given below:
Assume the specific gravity of OPC, sand and coarse aggregate to be 3.14, 2.67 and 2.74, respectively. The air content is ________________ liters/ .
| Component | Amount |
|---|---|
| Water | |
| Ordinary Portland Cement (OPC) | |
| Sand | |
| Coarse aggregate |
Correct answer
49.5 to 51
Solution
The total volume of of concrete is the sum of the absolute volumes of its constituents (water, cement, sand, aggregate, and air).
1.Volume of water ():
2.Volume of OPC ():
3.Volume of Sand ():
4.Volume of Coarse Aggregate ():
Total volume of solids and water = Volume of air () = Converting to liters: .The answer lies in the range 49.5 to 51.0.Continue learning with Success Tracker
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