Blast furnace slag is the non-metallic product consisting essentially of silicates and aluminosilicates of calcium and other bases, that is developed in a molten condition simultaneously with iron in a blast furnace.
Air-cooled blast furnace slag is a
predominantly crystalline, solid rock-like
material whereas granulated blast
furnace slag is a glassy, granular product.
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Granulated blast furnace slag is produced when molten slag is passed through high volume water sprays, breaking the slag stream into small glass droplets before crystallisation occurs.
Air-cooled blast furnace slag is formed when molten slag is cooled in pits and allowed to crystallise under atmospheric conditions.
Air-cooled blast furnace slag is crushed and screened into several sizes and blended with granulated blast furnace slag in nominally 80/20 volumetric proportions.
High quality (bound) roadbase conforming to RTA Specification 3052
- Inherent cementitious properties
- Interlocking particle shape
- Ease of compaction
- Long term strength gain
- Lower tonnage required per cubic
metre
- Effective utilisation of an industrial byproduct
conserving natural resources
| SIEVE |
% PASSING
|
| 26.5 mm |
100 |
| 19.0 mm |
95-100
|
| 13.2 mm |
75-90 |
| 6.7 mm |
60-70
|
| 2.36 mm |
40-50
|
| 425 um |
10-20
|
| 75 um |
1-5
|
|
Attribute
|
Typical
|
RTA 3052
|
Maximum Dry Density
|
1.8-1.9 t/m3
|
|
Optimum Moisture
|
12-14%
|
|
| Misshapen Particles (2:1)
|
10-20%
|
35% max |
Dry Strength
|
100-130kN
|
|
Wet Strength
|
90-120kN
|
65kN min
|
Wet/Dry Variation
|
5-20%
|
35% max |
| Acid Soluble Sulphate, SO3
|
0.3-0.6%
|
0.6% max
|
Liquid Limit
|
n/a
|
|
Plastic Limit
|
n/a
|
|
| Plasticity Index |
non-plastic |
0
|
| Modified Texas Triaxial
|
2.0-2.5
|
2.5 max |
UCS (7 days)
|
1.0-2.0MPa
|
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PDS-RBU800 : Rev 6 : 25/03/10
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Marketing Department
Australian Steel Mill Services Pty
21 Processing Area
Springhill Road
PORT KEMBLA NSW 2505
Telephone: 02 4255 1125
Facsimile: 02 4276 2369 |
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