MasterGlenium SKY 903 from BASF was used in world’s largest underwater concrete pour at the Queensferry Crossing.

This product was specifically engineered to allow high levels of water reduction and very long workability retention, without sacrificing early strength development performance.

The biggest single pour for the South Tower foundation, resulted in 16,869m3 of concrete being produced and delivered without any delays or returned concrete and was tackled in a non-stop process, 24 hours a day, over 15 days which, at its peak, involved up to 100 people.