ASMS - Cement Grade Granulate

Quick Links, Cements

Cement Grade Granulate

Product Code GBF006

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.

Granulated blast furnace (GBF) slag is a glassy, granular material.

PROCESS

Molten slag is passed through high volume water sprays, breaking the slag stream up into small droplets and cooling them so quickly that crystallisation is suppressed.

DESCRIPTION

Cement Grade Granulate is a coarse sand-like material with a porous, amorphous structure and ranging from white to golden brown in colour.

APPLICATIONS

Part replacement for portland cement

In the manufacturing process the slag is dried and either interground with portland cement clinker or separately ground and post blended with portland cement at the cement plant or concrete batching plant.

ADVANTAGES

Cementitious properties
Good grindability
Low iron levels
High glas content
Bright colour
Low chloride content
Dependable quality

ADVANTAGES IN CONCRETE

Better workability and placeability
Better pumpability
Less bleeding
Higher ultimate strength
Lower hydration temperature
Reduces aggregate alkali reaction
Significantly improves resistance to sulphate attack
Reduces chloride penetration
Enhances durability
Reduces efflorescence
Lighter colour

ENVIRONMENTAL VALUE

Effective utilisation of an industrial by-product
Conserves natural resources and preserves natural landscape
Reduces the need for landfill sites
Reduces greenhouse gas emissions
Reduces energy consumption

PDS-GBF006 : Rev 1 : 27/05/95

CHEMICAL PROPERTIES

Blast furnace slag is composed of silicates and aluminosilicates, but for ease of reporting oxide equivalents are used and fall within the relatively narrow limits given below:

CONSTITUENT	SYMBOL	%
Iron Oxide	FeO	<1.3
Calcium Oxide	CaO	38 - 43
Silicon Dioxide	SiO₂	32 - 37
Aluminium Oxide	Al₂O₃	13 - 16
Magnesium Oxide	MgO	5 - 8
Titanium Dioxide	TiO₂	<1.5
Manganese Oxide	MnO	<1.0
Potassium Oxide	K₂O	<1.0
Sulphur	S	<1.0
Sodium Oxide	Na₂O	<0.5
Basicity Ratio	CaO+MgO SiO₂+Al₂O₃	0.9 - 1.1
Lime/Silica Ratio	CaO SiO₂	1.1 - 1.3
Hydraulic Index	CaO+MgO+Al₂O₃ SiO₂	1.7 - 1.9
Chloride Ion	Cl	<250ppm

TYPICAL GRADING

SIEVE	% PASSING
4.75mm	100
2.36mm	97 - 100
1.18mm	70 - 85
600um	30 - 45
425um	15 - 25
300um	8 - 14
150um	3 - 7
75um	1 - 3
45um	0 - 2

TYPICAL PHYSICAL PROPERTIES

Bulk Density (Loose)	0.85 - 1.05 t/m³
Glass Content	>95%
Angle of Repose	Approx. 35°

TECHNICAL SERVICES AND CUSTOMER ENQUIRIES
Marketing Department
Australian Steel Mill Services Pty
21 Processing Area
Springhill Road
PORT KEMBLA NSW 2505

Telephone: 02 42551125
Facsimile: 02 4276 2369

Privacy Statement | Site Map