GGBS (Ground Granulated Blastfurnace Slag) - BS 6699: 1992

We currently act as agent for this product, we have several factories as our strong backup, we can supply GGBS all the year round, please contact us or simply leave a message here, if any need be. The description and specification of this product as follow:1. Description:The secret of reducing the cost of Concrete--Ground Granulated Blast furnace Slag(GGBS), a co-product produced simultaneously with iron, molten blast furnace slag is cooled instantaneously by quenching in large volumes of cold water, known as granulation, to produce Granulated Blast furnace Slag. This process produces a glassy, homogeneous, non-crystalline material that has cementitious properties. The three major chemical components are CaO, SiO2, and Al2 O3 and make up 95% of the slag.GGBS is cementitious material that can be used to make durable concrete either in combination with Ordinary Portland Cement(OPC) or as a separate constituent where the percentage used is selected to optimize concrete performance for particular applications.In China and worldwide, the application of GGBS came into the limelight only in the past few years, However, due to the tremendous potential in GGBS, its economic benefits, and its improvements to concrete durability, the use of it has gained significant speed and momentum.2. Specification:A. Physical Properties and Strength:Test Items	 BS 6699:1992 Requirement Our Test ResultsFineness-Blaine	 Min.275m2/kg	 450Initial Setting Time, Vicat, Minutes	 Not Less than Portland cement	 192Soundness-Le Chatelier, Expansion	 Max:10.0mm	 0Mortar Compressive Strength, at:3 days -- 11.87 days Min.12.0 N/mm2 29.128 days	 Min.32.5 N/mm2	 52.0B. Chemical Composition:Test Items	 BS 6699:1992 Requirements	 Our test Results1. Insoluble Residue	 Max.1.5% 	0.132. Magnesia (MgO)	 Max.14%	 9.803. Sulphur (S2-)	 Max.2.0% 	0.044. Sulphate (SO3)	 Max.2.5%	 0.055. Loss on Ignition	 Max.3.0%	 0.366. Manganese (Mn2O3)	 Max.2.0%	 0.707. Chloride Ion Content (Cl-)	 Max.0.10%	 0.0358. Chemical ModulusCaO+MgO+SiO2 Min.67 	82.41(CaO+MgO)/(SiO2) Min.1.0 1.43(CaO)/(SiO2) Max.1.4 1.149. Moisture Content	Max.1.0%	0.21