Improving freeze-thaw resistance of alkali-activated slag by admixtures

Alkali-activated material (AAM) is one of the most attractive alternatives to ordinary Portland cement (OPC). Recently, more and more research interests are devoted to durability performance. In cold areas, freeze-thaw resistance is a crucial durability factor for concrete. However, the understanding of the freeze-thaw resistance of AAMs is...

Air entrainment and free-surface fluctuations in A-type hydraulic jumps with an abrupt drop

In high dam construction projects in China, stilling basin design with an abrupt bottom drop is sometimes introduced to reduce the bottom velocity and pressure loads by generating A-type hydraulic jumps. Although the stilling basin design is not new, A-type hydraulic jumps have not been studied taking into account the air entrainment and...

Assessment of interfacial turbulence treatment models for free surface flows

The modelling of complex free surface flows is challenging due to the mobility and deformability of the interface and air entrainment characteristics, which are highly affected by turbulence. With the framework of Reynolds averaged Navier–Stokes (RANS) models and the volume of fluid (VOF) method, turbulence quantities at the air–water...

Getijgootonderzoek: Invloed luchtinblazen op getijbeweging en dichtheidsverdeling

Hevels in de Grevelingendam (nota V): Vormgeving instroomkonstruktie

Stroomsluis in de Brouwersdam: Afvoerkarakteristieken sluisontwerp

Air entrainment by plunging water jets

Gas entrainment caused by the impact of liquid jets upon liquid pool surfaces is a subject which has received too little attention. This well-known phenomenon,which occurs In nature and in numerous industrial operations, has only recently received interest from scientific workers. The influence on product quality and applications in waste water...