CCoverest Finetech Introduces, BUILDCEM Ground Granulated Blast Slag (GGBS), A Quality Cement extender. BUILDCEM GGBS is suitably processed in well-equipped plant using advance technology.

BUILDCEM GGBS, is processed to achieve optimum particle size distribution to facilitate cementitious contributions when blended with cement. BUILDCEM GGBS goes through quality checks at various stages to ensure satisfactory performance as cement replacement / substitute.

BUILDCEM GGBS is off - white free flowing powder. It imparts a lighter, brighter colour to concrete in contrast to the stony grey of concrete made with Portland cement. In general, addition of BUILDCEM GGBS improves aesthetics of concrete. BUILDCEM GGBS largely Contains high amount of reactive components calcium alumina silicates.

Reactive Silicates or Glass is mainly responsible for secondary hydration reaction when cement is mixed with BUILDCEM GGBS, facilitates lime (CaO). As a result of secondary reaction between lime and reactive silicate, more volume of C-S-H is produced Key to better performance in concrete made with BUILDCEM GGBS.

One of Key attribute of use of BUILDCEM GGBS as part replacement of cement concrete is enhanced durability of concrete. Use of BUILDCEM GGBS leads to reduction of permeability in concrete, as consequence concrete made with BUILDCEM GGBS will offer increased resistance to ingress of harmful elements such as Chloride. It is particularly important for reinforced concrete used in marine, coastal environments and in road bridges, where the concrete is exposed to aggressive environment. This is attained due to reduction of capillaries and small pore diameters in concrete. which makes it more impermeable to allow entry of harmful elements.

In addition, BUILDCEM GGBS is more effective in concrete to provide protection against both sulphate attack and chloride attack as the Tricalcium aluminate content (C3A) is lower as compared to normal concrete. BUILDCEM GGBS can effectively replace Sulphate Resisting Portland Cement (SRPC) in application for Sulphate resistance.

High Long Term Strength Concrete Containing BUILDCEM GGBS achieves higher ultimate strength than concrete made with Portland cement. with passage of time, BUILDCEM GGBS also makes cementitious contribution. Optimum addition in concrete generates more strength-enhancing calcium silicate hydrates (CSI-I) than concrete made with Portland cement only. concrete made with BUILDCEM GGBS continues to gain strength overtime. Concrete mix can be suitably proportioned to develop design for a particular strength grade of concrete.

Advantages of GGBS

• Improved workability: GGBS based concrete demonstrate improved workability and finishability when compared with 100% ordinary Portland cement concrete system due to its high fineness, as a result we can get segregation free and cohesive Mix.
• Reduced heat of hydration: Due to reduced heat of hydration, plastic shrinkage cracks can be minimized.
• Reduced permeability: The inter connectivity of capillary pores will be discontinued and thus permeability will be reduced.
• Resistance to alkali- silica reaction (ASR): Use of GGBS will reduce the potential of ASR occurring by reducing the amount of alkali available in the system that is available for reaction with the aggregate.
• Better Particle packing: Concrete made with GGBS has better particle packing due to particle shape and improved hydration.
• Excellent resistance to Sulphate attack: GGBS does not contain C A, so its addition in concrete dilutes the total amount of C A and also reduces the permeability due to which the sulphates do not penetrate in to concrete.
• Resistance to chloride attack: Due to reduced permeability and increased densification the diffusion of chloride ions will be greatly minimized in the concrete containing GGBS.
• Lighter in Colour: An Aesthetic appearance and low heat absorption due to its light colour.
• Reduced life cycle cost: Concrete produced by using GGBS can significantly improve the durability and extends the life of the structure and thus reduce the lifecycle cost of the structure.
• Fire Resistance: Structures made with GGBS based concrete resist the high temperature than the structures made with Ordinary Portland cement.
• Resistance to Erosion: Concrete made with GGBS demonstrated the resistance to erosion compared with Ordinary Portland slag cement. The Engineering Consultants and Designers from all over the world are recommending GGBS due to its superior engineering properties.