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Inputs for Program Creatpsd

First, set the specific gravity of the particles (typically 3.2 for cement, 2.2 for silica fume, etc.)

Particle specific gravity:

Then, below this table, enter either the total number of particles, the total number of pixels, or the desired w/c ratio. You can also change the mass fractions or specifically fix the number(s) of certain size particles.

Diameter (µm)
(Volume in pixels)
Mass Fraction Number of particles
1 (1)
3 (19)
5 (81)
7 (179)
9 (389)
11 (739)
13 (1189)
15 (1791)
17 (2553)
19 (3695)
21 (4945)
23 (6403)
25 (8217)
27 (10395)
29 (12893)
31 (15515)
35 (22575)
41 (36137)
47 (54435)
61 (119009)
73 (203965)
Total number of particles: w/c ratio is:

Total number of pixels:

Name to be given to this particle datafile: (with no file extension--- .psd will be automatically added)

User comment:

Total mass fraction:

Created May 1, 2017, Updated November 25, 2019