DESCRIPTION
KKS® RETARD 855 is a specialized substance to inhibit the setting process, which have been specifically designed for the production of exposed aggregate finishes or for producing a mechanical key to construction joints, stop ends, or subsequent rendering applications.
KKS® RETARD 855 is a low viscosity paste retarder for application to formwork to produce exposed aggregate work.
ADVANTAGE
•    KKS® RETARD 855 surface retarder is used to expose aggregate on formed Portland cement based concrete surfaces
•    KKS® RETARD 855 provides an efficient, economical method of obtaining a rough bonding surface without the need for hacking, chipping or grit-blasting
•    KKS® RETARD 855 is used to produce precast panels having a decorative architectural finish showing the color and texture of natural aggregate. 
•    KKS® RETARD 855 is painted directly on formwork for walls, ceilings, vertical construction joints or any similar formed concrete surface. 
•    KKS® RETARD 855 will retard the set of the cement paste by up to 6 mm depth, the depth depends upon the thickness of the coating.
INSTRUCTION FOR USE
APPLICATION
KKS® RETARD 855 should be stirred before use and must not be diluted.
KKS® RETARD 855 may be applied to any type of clean formwork. Apply a heavy coat with brush or roller and allow to dry (normally 2 to 4 hours). No mould oils should be on the forms. Coated surfaces should be protected from strong sunlight.
APPLICATION CONDITIONS/ LIMITATIONS
For optimum results forms should be removed as soon as possible after the concrete is poured, normally 1 – 2 days. If the forms must remain in place in longer period, then use two or three coats of KKS® RETARD 855 to ensure deep penetration.
It is recommended to pre-test on a concrete slab to check the effect of KKS® RETARD 855.
CLEANNING OF TOOLS
Equipment should be washed out after use with hot water.
PRODUCT DATA

STRORAGE / SHELF LIFE
KKS® RETARD 855 has to be stored in dry, cool, shaded place. If stored properly in unopened, original packaging, its shelf life is 9 months.
SAFETY INFORMATION
KKS® RETARD 855 will cause irritation to skin, eyes and skin allergies. Gloves, mask, goggles should always be worn. When splashed in the eyes or on skin, wash immediately with plenty of water and seek medical advice if necessary. Product is non-toxic, non-flammable and non-hazardous in transportation. Disposal should be done according to local law. For more information, please refer to the latest Product Safety Data Sheet.