Grading Limits for Aggregates


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