Sika® ViscoCrete®-665

Superplasticizer / High water reducer for very high performance concretes Sika® ViscoCrete®-665 is a new generation, non-chlorinated superplasticizer based on acrylic copolymers, specially developed for the production of very high performance concretes (BTHP) requiring maximum water reduction, excellent fluidity and very high mechanical strengths. Description Sika® ViscoCrete®-665 acts by advanced dispersion of cement particles using a combined electrostatic and steric repulsion mechanism. This technology makes it possible to obtain very compact, homogeneous concrete with a significant reduction in water, while maintaining good workability and excellent stability of fresh concrete. Areas of application Very high performance concretes (BTHP) Fluid and self-compacting concretes Reinforced and prestressed concrete Works of art and heavily used structures Concretes requiring high durability and compactness Advantages Very high water reduction Excellent fluidity and cohesion Development of very high mechanical resistance Marked reduction in porosity Improved long-term sustainability Compatible with the majority of cements Use The dosage depends on the type of cement, mineral additions (silica fume, fillers, slag), the formulation of the concrete and the desired performance. Prior testing in a plant or laboratory is strongly recommended.

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