Nova Building Products



Recons Group is leading channel partner of JSW - GGBS. We, at Recons Group, supply the raw material to various RMC, Mega Infrastructure Projects and Builders.

Granulated Blast furnace Slag

Ggbs is the by product from controlled process of Iron Production from the house of the Recons Group.

GGBS is used to make durable concrete structures in combination with ordinary Portland cement and/or other pozzolanic materials. GGBS has been widely used in Europe, and increasingly in the United States and in Asia (particularly in japan and Singapore) for its superiority in concrete durability, extending the lifespan of buildings from fifty years to a hundred years. GGBS content ranging typically from 30 to 70% in the production of ready-mix concrete or site-batched durable concrete.

Concrete made with GGBS sets more slowly than concrete made with ordinary Portland cement, depending on the amount of GGBS in the cementitious material, but also continues to gain strength over a longer period in production cycle. This results in lower heat of hydration and lower temperature rises, and makes avoiding cold joints easier.

GGBS Advantages
  • 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 refinement 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.
  • Reduction requirement of cement for same strength thus reduces the cost of concrete.
  • IS 456:2000 recommends addition of more than 50% GGBS where Chloride is encountered along with Sulphates in place of SRC.
Uses of JSW GGBS
  • Better workability, making placing and compaction easier
  • Lower early age temperature rise, reducing the risk of thermal cracking in large pores
  • Elimination of the risk of damaging internal reactions such as ASR
  • High resistance to chloride ingress, reducing the risk of reinforcement corrosion
  • High resistance to attack by sulphate and other chemicals
  • Considerable sustainability benefits