PCE Based Superplasticing and Set Retarding Concrete Admixture
SikaPlast® -257 is a third generation polymer based high performance superplasticizer for producing soft consistency concrete. Sika Plast®-257 meets the requirements of ASTM C 494 Type D & G.
SikaPlast® -257 combines diffent modes of actions. By adsorption on the surface of the fines and keeping them apart while the hydration is in progress.SikaPlast® -257 effects the following concrete properties :
- Long slump keeping and high water reduction
- High flowability (considerably reduced placing and compacting work)
- Faster evolution of early strength development
- Workability can be maintained up to 4 hours (still depends on admixture dosage, cement type, temperature, W/C)
- Improved creep resistance and shrinkage resistance characteristics