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GGBS

GGBS

GGBS is a fine powder, used in concrete as "cement", major use in ready mixed concrete (RMC) or in the production of Portland slag cement. GGBS replaces a substantial proportion of normal cement (Ordinary Portland Cement) in RMC. The mixing varies from 30% to 70% approximately (generally 50%). The higher the proportion, the better is durability for concrete. GGBS is also in other forms of concrete including site-batched and pre-cast.

Replacement of Portland Cement by adding up to 70% GGBS, reduce cement content in concrete from about 530 Kg/m3 to 160 Kg/m3 and despite of this large reduction of cement in concrete, ultimate strength is not affected, also considerable improvement in durability properties is observed.
GGBS slag is byproduct of iron and steel manufacturing process. It contains the entire basic constituent of OPC but not exactly in the same ratio and chemical form. Slag itself has no cementing property but when mixed with OPC or activated chemically it develops hydraulic properties similar to cement. The calcium oxide (CaO) found in slag is tied up as calcium silicate, calcium aluminates and calcium aluminosilicate. Although these compounds are not identical to those found in Portland cement (i.e. tricalcium silicate, tricalcium aluminate, etc), they hydrate when activated by calcium hydroxide generated during the hydration of Portland cement. Since GGBS is almost 100% glassy, it is generally more reactive. This process of quenching is called granulation because it produces glassy granules similar in appearance to coarse sand, having excellent cementitious property when ground to high fineness and mixed with cement.


Advantages to GGBS are
  • Reduction in heat of hydration and minimization of Thermal cracks.
  • Permeability and surplus lime liberated during the hydration of portland cement are the root causes for deleterious effect on the concrete
  • Absorption of surplus lime released out of OPC to form in to secondary hydrated mineralogy.
  • Pore refinement and grain refinemertt due to the secondary hydrated mineralogy, thus contributing for impermeability and enrichment of Transition zones.
  • Impermeability is the foremost mechanism for making the concrete more durable and is best achieved by using GGBS.
  • Reduced requirement of cement for same strength thus reduces the cost of concrete.


  • Concrete made with a blend of GGBS
  • Is more durable
  • Lasts longer
  • Has greater long-term strength
  • Is better for the environment
  • Is best value for money


  • GGBS APPLICATIONS IN CONSTRUCTION

  • Ready Mix Concrete
  • Structural concrete
  • Pre-stressed concrete
  • Mass concrete
  • Pre-Cast Concrete


  • GGBS Packing

    GGBS in bulk tankers

    GGBS is brought to the end-user's site in bulk tankers. Bulk GGBS helps eliminate the need for construction and maintenance of large and unwieldy go-downs for GGBS at construction sites. The measured quantity extracted by the discharge system ensures correct weight.


    Major advantages of using bulk GGBS are:
  • No handling from the factory to your site
  • Tamper proof delivery
  • Order only when you are ready to use
  • Customers for bulk GGBS are ready mix concrete manufacturers, contractors, builders, manufacturers of pre-cast fabricated concrete blocks and many more.

    GGBS in Small Bags

    GGBS in small bags, which specifically cater to builders and developers who store and consume GGBS in relatively smaller quantities. The dimensions and convenient weight of small bags makes it easy to manually handle and mix on site.


    Major advantages of using GGBS in small bags are:
  • Convenient manual handling and mixing on site
  • Can be stored in smaller go-downs and warehouses
  • Economical to transport over long distances
  • Can be containerized for exports by sea
  • Customers for GGBS in small bags include contractors, builders, developers and other consumers like manufacturers of GGBS based products. It is particularly beneficial in places where GGBS is manually handled

    GGBS in jumbo bags

    GGBS in jumbo bags is beneficial for large consumers who need to store GGBS regularly. It is economical in terms of transportation compared to bulk tankers, and can be containerized for exports as well.


    Major advantages of using GGBS in jumbo bags are:
  • Can be stored in go-downs and warehouses
  • Economical to transport over long distances
  • Moisture resistance and UV proof liners ensure extended shelf-life
  • Bottom sprout increases ease and convenience while unloading
  • Can be containerized for exports by sea
  • Customers for GGBS in jumbo bags include ready mix concrete manufacturers, contractors, builders and other large GGBS consumers. It is particularly beneficial in places where GGBS comes from a long distance.