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MATERIAL ANALYSIS
Sand Ballast
The chemical composition of the crystal amber (Silica) sand used to
Ballast the Operation Hardtack, Phase I barges was:
Silica (SiO,
81. 80%
Iron Oxide (Fe202)
O.1)
Alumina (Al, 03)
Lime (CaO}
11.07
1.18
Magnesia (MgO)
Loss on Ignition
Lime and Magnesia calculated
to equivalent Calcium Carbonate
(CacO,)
Percent loss in weight after
immersion for 24 hours in
warm concentrated hydrochloric
acid at 80°C
0.09
0,44
2,32
1.06
The screen analysis of the amber sand was
Screen No. 8
Screen
Screen
Screen
Screen
Screen
Screen
No.
No.
No.
No.
No.
No.
10
14
16
20
24
30
Screen Na. 40
Screen No. 50
Percent Passing |
99
"
"
"
"
"
"
"
"
"
"
"
"
96
90
81
68
56
32
"
"
"
"
12
2