DATAEXTRACTION command with Excel, site engineers can reduce quantity calculation time by 70% and eliminate manual entry errors.
Construction Material: Aggregate Quality Test (Field + Lab Guide) 🪨
Aggregate (coarse + fine) concrete ka major part hota hai. Total concrete volume ka lagbhag 70–75% aggregate hota hai, isliye iska quality check karna bahut zaroori hai.
1. Sieve Analysis (Grading Test)
Is test se pata chalta hai ki aggregate ka size distribution sahi hai ya nahi.
- Different sieve sizes use kiye jaate hain
- Material ko sieves se pass karte hain
- Percentage passing calculate kiya jata hai
Importance: Proper grading se concrete strong aur workable hota hai.
2. Flakiness Index (Shape Test)
Ye test check karta hai ki aggregate flat (patla) toh nahi hai.
- Flat particles weak hote hain
- Concrete strength reduce karte hain
Limit: Generally < 25% acceptable
3. Elongation Index
Ye test check karta hai ki aggregate lambe (elongated) toh nahi hain.
- Lambe particles load properly transfer nahi karte
Limit: Generally < 15% acceptable
4. Impact Value Test
Aggregate ki toughness check karta hai.
- Impact load mein tootne ki capacity check hoti hai
Limit: < 30% for good quality
5. Water Absorption Test
Aggregate kitna paani absorb karta hai ye check hota hai.
- High absorption = poor quality
Limit: < 2% recommended
📊 Quick Aggregate Checklist
| Test | Requirement |
|---|---|
| Grading | As per IS standards |
| Flakiness | < 25% |
| Elongation | < 15% |
| Impact Value | < 30% |
| Water Absorption | < 2% |
🎯 Conclusion
Aggregate quality directly concrete strength ko affect karti hai. Isliye site par use karne se pehle proper testing zaroor karein.
💬 Aapka Sawal
Kya aap site par sieve analysis karte hain ya lab par depend karte hain? Comment mein batayein.
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