Benefits - Workability

The workability of concrete is determined by many factors and must be considered in relation to the requirements of each project. The following observations can, however, be made about the impact of high reactivity metakaolin (HRM):

1. Concrete with BASF MetaMax® HRM can be placed, finished and cured in pretty much the same manner as concrete without HRM.
2. The addition of MetaMax metakaolin reduces concrete slump and may require the addition of a high range water reducer (HRWR). MetaMax metakaolin requires a lower dosage of HRWR, however, than would silica fume.
3. When MetaMax metakaolin is used to replace 5 to 10% by weight of the cement in a mixture, concrete is generally more cohesive and less likely to bleed. As a result pumping and finishing processes require less effort.

MetaMax metakaolin tends to improve troweled finishes by giving concrete a “creamy” or “buttery” texture that makes it easier to trowel and finish.