When a mix is too dry (low slump), and you can’t add water, then you only have two options: Reject the load or add a superplasticizer. We have a full chemical range of superplasticizers that can instantly add slump to your mix so you can place and invoice that load of concrete. Supercizer 1, 5, or PCE can be used for regular slump life (about 45 minutes), and Supercizer 2 and 7 can be used for extended slump life (about 90 minutes).
If a mix is too wet (high slump) because of a higher content of fine aggregates or the use of superplasticizers (not excess water), you can reduce the slump of concrete by adding Super Slump Buster. Super Slump Buster is a water thickener with temporary slump reducing effects. Eventually, the concrete will return to its original slump. Recommended for paving, curbing, or placing concrete at a slope.