Why do I get plugs when priming for concrete with superplasticizers?
A. Slick-Pak II requires water to hydrate, so when Slick-Pak II is made with too little water it will absorb water from the concrete in order to hydrate. Concrete with superplasticizers tends to have a low water content, so if the Slick-Pak II absorbs any water from the plasticized concrete, it will have a tendency to plug. For priming for concrete with superplasticizers, we recommend increasing water content be used to prepare the priming solution.