Ambuja Kawach

Gallery Ambuja Kawach 1
Gallery Ambuja Kawach 1
March 2021
By Holcim
Headquarters 6300 Zugo, Suíça

Ambuja Kawach - Fly ash-based cement that repels and prevents penetration of water in concrete

It has been observed that most newly constructed buildings face issues like seepage, dampness & leakages within the first 5 to 10 years. These problems are very common in India due to several factors such as persistent warm or high temperatures, tropical wet and dry climate , extreme weather conditions like heavy rains & very hot summer, shallow water table or improper & ineffective drainage systems causing waterlogging. Ambuja Kawach is a specially formulated product with high-quality water repellent properties which acts as a shield against water seepage in all construction applications. Ambuja Kawach is a newly developed blended cement based on Portland pozzolana cement-PPC ( fly ash based) and alternatively Composite cement (fly ash & slag based). It resists leakage & seepage due to its water repellence and thereby enhances the durability of the structures.

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Key features

  • Modified Portland Pozzolana Cement / Composite Cement
  • Specially developed silicon based additive for enhancing cohesiveness and giving water repellent properties
  • 32% lower carbon footprint as compared to local OPC (510 Kg CO2 / ton versus 749 Kg CO2 / ton)
  • Use of Ambuja Kawach enhances the durability of the structure and restricts maintenance/repair costs of structures thereby reducing overall material consumption during life cycle


  • It brings ~24 CHF per ton EBITDA
  • It also brings additional volumes to an untapped customer segment

Categories of Application

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

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