worldwide Quick Links en Company Products Service Showroom Formliner Magazine You are here: HomeProductsConcrete FormlinersSurface Retarder Surface Retarder By washing the concrete surface, the cement is rinsed off and the aggregate exposed. This gives the surface a unique optical effect that is also non-slip. Deactivators and acidifiers can be used to create washed concrete. Both products offer a range of washing depths, a homogenous washed finish and short drying times as well as eco-friendly and economic use. Washed concrete for surface textures can be created in a positive or negative process. RECKLI offers the right surface retarders for both processes - CR type N or CR type PV. Download Brochure (PDF, 3 MB) Contact RECKLI Washing Depths Our products for the acidification of concrete surfaces facilitate nano and micro washing and/or acidification up to 0.05mm in new and old concrete. With deactivation, washing from 0.1 to 2 mm can be realized in exposed concrete. You can find details about washing depths in our brochure on surface retarders. Products CemGel K RECKLI CemGel K is a viscous washing gel for the attainment of the finest washing of concrete surfaces in positive processes. >Read more CemGel KS RECKLI CemGel KS is a viscous washing gel for the attainment of the deeper washing of concrete surfaces in positive processes. >Read more CR Type N RECKLI CR Type N is a solvent-containing concrete surface retarder for fine washing in negative processes. >Read more CR Type PV RECKLI CR Type PV is a dilute concrete surface retarder for fine washing in positive processes. >Read more Negative Process (N) 01 The medium is sparingly and evenly applied to the form with a paint roll or a sprayer. 02 After a short trying period (15 to 60 minutes) the concrete can be introduced. 03 As a general rule, the elements can be washed out after 18 to 24 hours. 04 The minimum duration for the elements remainder in the form lies at 8 hours. 05 The washing out is most simply carried out with a high-pressure cleaner. Dry brushing out and subsequent washing is possible. Application Area on site and at the plant Application in the casing with a paint roller or suitable sprayer Use architectural concrete, precast concrete elements, facade cladding, noise insulation walls, gardening elements, concrete goods, concrete segment joints Washing Depths 13 different washing depths from 0.1 mm to 7mm Positive Process (PV) 01 The concrete element is cast, the form is removed, and the element is smoothed. Possible water puddles have to evaporate. 02 The medium is applied in one, well coating layer on the absolutely fresh concrete. 03 After the application, the concrete dries for 1 to 3 days. 04 As soon as the concrete solidifies, the form is removed. 05 The washing out is most simply carried out with a high-pressure cleaner. Application Area on site and at the plant Application on to the fresh concrete with a suitable sprayer Use in-situ concrete surfaces, palisades, paving, plates, flower troughs, concrete segment joints. Washing Depths 12 different washing depths from 0.1 mm to 7 mm Acidification (CEMGEL) 01 The undiluted gel is applied with a brush, water or sprayer on to the fresh concrete which is well moistened with water. 02 After the application, the product reacts with the concrete. The medium is distributed until it no longer foams. 03 The concrete element is subsequently throroughly sprayed with water. Application Area on site and at the plant Application with a soft broom, brush or suitable sprayer on all concrete surfaces possible Use Facade elements, window panes, cornices, pillars Washing Depths 0,05 mm Company Profile Partnerships & cooperations Awards History Jobs & Careers Overview RECKLI as an employer Vacancies People at RECKLI Concrete Formliners SELECT VISUALS UNIQUE Surface Retarder Artificial Stone Surface Protection Manufacturing Process Applications Calculation Supplementary Products Product Index Precision Chemicals Shaping & Moulding Separating & Demoulding Washing & Acidifying Filling & Thickening Protecting Cleaning Complementary Products Tools Product Index Service Concrete facts FAQ Downloads Order information material BIM Tenders Portals & Media Branches Worldwide Trade Fair Dates Contact News & Press Social Media Instagram Facebook Legal Imprint Privacy Policy Terms of Service +49 2323 1706–0 RECKLI respects your privacy. 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