Design of durable and pumpable metakaolin-modified ready-mixed concrete for cast-in-situ piles

2021/11/08

The cement and concrete industry has already been facing considerable problems with dwindling raw materials for many years. In the long term, a further reduction in the availability of fly ash and ground granulated blast furnace slag can be expected as a result of the imminent energy transition and the decline in steel production.

Concrete for cast-in-situ piles can contain high amounts of fly ash and slag, which ensures dense and durable concretes with high structural stability. In addition, the overall CO2 emissions of the binder composition can be reduced due to this binder composition.

The main goal of the research cooperation project between the Institute of Construction and Building Materials (TU Darmstadt, Germany) and Sehring Beton GmbH & Co. KG (Langen, Germany) is the development of a metakaolin-modified ready-mixed concrete for cast-in-situ piles, that meets all needed requirements like easy pumpability, high durability and adequate cohesion.

This special concrete is intended to ensure the sustainability and performance of concrete for cast-in-situ piles in the future without the use of fly ash and ground granulated blast furnace slag.

Contact:

Prof. Dr.ir. Eddie Koenders

M.Sc. Kira Weise

Funded by ZIM (Federal Ministry for Economic Affairs and Energy)

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