CHRONOS VF 202
Additive for cement and concrete
Chronos VF 202 is a polymer-based admixture, developed specifically for the ready-mixed concrete market, and in cases where concrete must be transported over long distances, even in hot weather, without having to resort to retardants.
Chronos (Chemically Reactive Nanostructural Superplasticizers) technology was developed in MAPEI’s own research laboratories, and integrates the characteristics of traditional acrylic superplasticizers with the innovative and revolutionary technology of these new polymers.
The combination of these effects provokes the progressive activation of Chronos VF 202 within the cementitious conglomerate, so that the loss of workability is continuously compensated for by the “release” of the special functional groups present in the polymers.
WHERE TO USE
The performance of Chronos VF 202 makes it particularly suitable for making ready-mixed concrete which, because of its production cycle and/or distance from the mixing plant to the site, requires its workability to be maintained for more than one hour, even in hot weather, and without delays in setting. Thanks to the progressive release of the product, Chronos VF 202 does not contain setting retardants and, therefore, has no negative effect on mechanical properties after short curing times.
Chronos VF 202 is particularly recommended for the production of ready-mixed concrete:
• with high transport times, including those higher than two hours, in which the consistency class must remain stable without adding water;
• in hot climates, including temperatures higher than +30°C;
• for waterproof, durable applications according to exposure classes contained in EN 206-1 Standards;
• in Rck 25-45 N/mm² strength class.