Set retarding/stabilising admixture
SikaTard® R is a liquid admixture developed for the control of cement hydration. SikaTard® R retards/stabilises sand/cement masonry mortars/Grouts and concrete mixes.
SikaTard® R provides the following beneficial properties:
- Improvement in open time for backfill grouts in tunnel
- Increased setting time in hot weather concreting
- Accelerated hardening after setting
- Increased ultimate strengths
- Long lasting control over slump/flow loss.
- Better surface finish
- Chloride free: does not attack reinforcement