1. 
   Superplasticizer
   Superplasticizers, also known as high range water reducers, are chemicals used as admixtures where well-dispersed particle suspension are required. These polymers are used as dispersants to avoid particle aggregation, and to improve the flow characteristics (rheology) of suspensions such as in conc...
   Found op http://en.wikipedia.org/wiki/Superplasticizer
   
   
2. 
   Superplasticizer
   See Water-Reducing Admixture (high range)
   Found op http://www.pavement.com/glossary/A.html
   
   

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