SikaEmaco® S 5440 RS is a one component, rapid setting, high strength, high modulus, shrinkage compensated concrete repair mortar that meets the class R4 requirements of EN 1504-3. SikaEmaco® S 5440 RS is a ready-to-use material that contains special hydraulic binders, well graded sands, specifically selected polymer fibres and an integrated corrosion inhibitor. When mixed with water, SikaEmaco® S 5440 RS forms a fast-setting and highly tixotropic mortar that can easily be hand-applied in 5 to 50 mm thickness.