Superplasticizer has a strong dispersing effect on cement, which can greatly improve the fluidity of cement mixture and concrete slump, while greatly reducing water consumption and significantly improving concrete workability. However, some superplasticizers will accelerate the loss of concrete slump, and if the dosage is too large, it will cause bleeding.
Superplasticizer does not change the setting time of concrete basically. When the dosage is large (overdosage), it has a slight setting retardation effect, but it does not delay the growth of the early strength of hardened concrete.
The high range water reducer can greatly reduce the water consumption and significantly improve the strength of concrete at all ages. While keeping the strength constant, cement savings of 10% or more can be achieved.
The high range water reducer has very little chloride ion content and does not corrode steel bars. It can enhance the impermeability, freeze-thaw resistance and corrosion resistance of concrete, and improve the durability of concrete.