Mortar additive Sika® ViscoCrete®-520 P

plasticiserretarder

Sika® ViscoCrete®-520 P is a high-performance superplasticizer and water reducer in powder form based on Sika® ViscoCrete® polycarboxylate (PCE) polymer technology. High performance in binder systems with pH < 11 Very fast adsorption also at low temperatures Compatible with other additives (e.g. citric acid) Usage Sika® ViscoCrete®-520 P is especially formulated for use in ternary binder systems but it can also be used in calcium sulphate (gypsum) based binders e.g. alphahemihydrate and andydrite. The product is particularly suitable for the production of: Self-levelling underlayments, levelling compounds and fillers Calcium sulphate self-levelling screeds Non-shrink grouts, anchor grouts, tile adhesives, injection and repair mortars Advantages Sika® ViscoCrete®-520 P is adsorbed onto the surface of the binder particles and due to repulsive forces from the effect known as steric hindrance, the solid binder particles are very effectively dispersed in the mix. The benefits of Sika® ViscoCrete®-520 P include, but are not limited to the following: High water reduction at low dosage, resulting in shorter drying times, higher densities and strengths Greatly reduced processing and compaction efforts due to very good flow and self-levelling behaviour Particularly high performance in systems with pH-value < 11.5 Reduced mixing times due to fast adsorption High initial flow, long slump life and processing time Improved shrinkage and creep behaviour Low influence on hydration, resulting in low activator/accelerator consumption Compatible with other additives (e.g. fruit acids, such as citric acid) Free of formaldehyde and ammonia