SikaRapid®-550
(former MasterPozzolith® 555)
Non-chloride accelerating admixture
SikaRapid®-550 is a ready-to-use liquid admixture formulated to accelerate the setting time of concrete under cool winter conditions and to produce high-early strength in special application concrete. It does not contain added chloride and conforms to the most stringent chloride ion limits required by concrete industry standards.
Concrete with SikaRapid®-550 admixture has a significantly faster setting time than plain concrete. Increasing the dosage rate increases set acceleration. Both the compressive and the flexural strengths of concrete with SikaRapid®-550 develop, more rapidly than with plain concrete.
Benefits to concrete construction and to the manufacture of concrete products because of this earlier setting and and strength gain in cold weather include:
Benefits to concrete construction and to the manufacture of concrete products because of this earlier setting and and strength gain in cold weather include:
- earlier finishing of slabwork without the need for calcium chloride
- more efficient scheduling, generally faster construction and earlier occupancy
- earlier stripping and re-use of forms for walls, precast work and other fast-track construction
- earlier structural use of concrete such as tiltslab, paving, floors, car-park
- potential energy savings in steam cured concrete (precast, prestressed, blocks) by reducing curing temperatures and/or steaming time necessary to reach desired transfer strengths