MPR combines high-range water reduction with a controlled set retardation, so a mix stays placeable through a long transit or a continuous raft pour without a cold joint.
Typical uses
- Mass concrete and raft foundations
- Ready-mix with transit times beyond 45 minutes
- Hot-weather concreting
Dosage
0.6 to 1.2 per cent by weight of cement, adjusted to the required retardation and ambient temperature.