Construction Materials And Testing2D
Aggregates - Theory & Concepts
Classification, sources, and testing of aggregates for concrete and asphalt.
Open the complete lessonFineness Modulus (FM)
Adjust the weight retained on each standard sieve (in grams or relative proportion) to recalculate the FM and observe particle distribution.
Sieve No. 4 (4.75mm)0 g
Sieve No. 8 (2.36mm)10 g
Sieve No. 16 (1.18mm)20 g
Sieve No. 30 (0.60mm)30 g
Sieve No. 50 (0.30mm)25 g
Sieve No. 100 (0.15mm)10 g
Total Aggregate Sample: 95 g
Sieve Stack
No. 44.75 mm
No. 82.36 mm
10g
No. 161.18 mm
20g
No. 300.60 mm
30g
No. 500.30 mm
25g
No. 1000.15 mm
10g
Pan
Passes No. 100
Cumulative % Retained
No. 40.0%
No. 810.5%
No. 1631.6%
No. 3063.2%
No. 5089.5%
No. 100100.0%
Fineness Modulus Calculation
$\sum = 0.0 + 10.5 + 31.6 + 63.2 + 89.5 + 100.0$
$\sum = 294.7\%$
Calculated FM
2.95
Fine Aggregate (Ideal Sand)