Bengaluru International Airport Limited (BIAL) - Phase 1

The project at Bengaluru International Airport Limited (BIAL) in its first phase required high performance through the right choice of concrete mix design with a highly flowable and stable self-consolidating concrete (SCC). 

The available grades of concrete were from Ml0 to M50 for substructures and superstructures. 

The type of Sodium Naphthalene Sulfonate Formaldehyde Condensate (SNF) that was selected during the specification work of the project was a low-end product that could cover partially the requirements of the project and was used to create Ml0 to M30 concrete structures. 

An appropriate design of (SCC) was needed where quality was important for improving concrete mobility and workability. 

The project would use this product for the wall panels for a smooth and fair finish to avoid plastering. A proper design of SCC was desired as it ensures very good performance and saves time and labor.

The technical team at Don Construction Products (DCP) suggested an M50 grade of concrete and 2 grades of SNF product range called Supaflo which grants high concrete workability and strength and meets standard requirements. An intensive study of materials and their properties and mock-up studies were undertaken to arrive at the optimal final mix design.

As the retention time required is 60 minutes, the flow required was 550 mm and the panels were casted. The required final compressive strength was achieved in 7 days. Besides the wall panels the DCP Supaflo range M50 grade mix was used in the flyover connecting the Airport which was designed as pre-stressed girders.

For more information on the case study, download the attached file. You can find it right under "Project Info". Follow us on social media for more interesting case studies!