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Particle size distribution (Granulometry)

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Zhang et al. 2010:
Particle size by sieving total sample, in cumulative passing weight units. Weight percentage of passing under 90 µm sieve: 7.3%
≤1 mm= 48.5 %
< 3 mm= 98.9%
< 5 mm= 100%

Particle distribution by laser diffraction of under 90 µm, in cumulative weight units:
1µm= 0.3 %
2µm= 3.1%
4µm= 7.7%
8µm= 12.3%
16µm= 18.6%
30µm= 30.5%
32µm= 32.4%
45µm= 45.5%
50µm= 50.5%
64µm= 63.9%
75µm= 72.9%
80µm= 76.4%
110µm= 91.0%
150µm= 98.6%

Additional information

The particle distribution measured by sieving total sample, in cumulative passing weight units is in the range from 48.5% ( ≤1 mm) to 100% (<5 mm). Weight percentage of passing under 90 microns sieve: 7.3%

The particle distribution by laser diffraction of under 90 µm, in cumulative passing weight units is in the range from 0.3% (1µm) to 98.6 % (150 µm). The difference in weight percentanges between values obstained by sieving and laser diffraction value is due to particle shape which is not spherical.