Workability of Fresh Concrete

Workability of Fresh Concrete

The consistence defines the behavior of the fresh concrete during mixing, handling, delivery and placing on site and also during compaction and surface smoothing. Workability is therefore a relative parameter and is basically defined by the consistence.

Workability requirements

·     Cost effective handling, delivery/placement and placing of the fresh concrete

·     Maximum plasticity (“flow ability”), with the use of super plasticizers

·     Good cohesion

·     Low risk of segregation, good surface smoothening (“finishing properties”)

·     Extended workability                                          ----->Retardation/hot weather concrete

·     Accelerated set and hardening process  ----->Set and hardening acceleration/ cold weather concrete