The grading limit for single-sized aggregates:
Percentage passing for single sized aggregates of nominal size(mm) | ||||||
63 mm | 40 mm | 20 mm | 16 mm | 12.5 mm | 10 mm | |
80 mm | 100 | – | – | – | – | – |
63 mm | 85 – 100 | 100 | – | – | – | – |
40 mm | 0 – 30 | 85 – 100 | 100 | – | – | – |
20 mm | 0 – 5 | 0 – 20 | 85 – 100 | 100 | – | – |
16 mm | – | – | – | 85 – 100 | 100 | – |
12.5 mm | – | – | – | – | 85 – 100 | 100 |
10 mm | 0 – 5 | 0 – 5 | 0 – 20 | 0 – 30 | 0 – 45 | 85 – 100 |
4.75 mm | – | – | 0 – 5 | 0 – 5 | 0 – 10 | 0 – 20 |
2.36 mm | – | – | – | – | – | 0 – 5 |
Grading limits for fine aggregates
(Clause 4.3 of IS: 383 – 1970)
IS Sieve Designation | Percentage Passing | |||
Grading
Zone I |
Grading
Zone II |
Grading
Zone III |
Grading
Zone IV |
|
10 mm | 100 | 100 | 100 | 100 |
4.75 mm | 90 – 100 | 90 – 100 | 90 – 100 | 95 – 100 |
2.36 mm | 60 – 95 | 75 – 100 | 85 – 100 | 95 – 100 |
1.18 mm | 30 – 70 | 55 – 90 | 75 – 100 | 90 – 100 |
600 micron | 15 – 34 | 35 – 59 | 60 – 79 | 80 – 100 |
300 micron | 5 – 20 | 8 – 30 | 12 – 40 | 15 – 50 |
150 micron | 0 – 10 | 0 – 10 | 0 – 10 | 0 – 15 |