1.Pembersihan Pengecilan ukuran
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c). Ukuran rerata butiran (D) ?
D
3.12
0.0041*(2)
0.0356
inchi
d). Indek keseragaman (UI) ?
Ayakan
Mesh.no.
% tase bahan
Tertinggal
Index
Keseragaman (UI)
3/8
4
8
1
2.5
7
1
2.5 7
KASAR
10
10.5
10
1.05
1
14
28
24
35,5
SEDANG
24 35.5 59.5
5.95 6
10 10
48
100
Pan
22,5
7,5
-----
HALUS
22.5 7.5
10
30
10
3
Jadi UI = Kasar : Sedang : Halus
= 1 : 6 : 3