Water-based surface retarder for concrete
Vetotard XT428 is a single component concrete surface retarder. The product is available in several grades that can be chosen based on the depth of surface retardation required. Vetotard XT428 is a chemical retarder directly applied to the form-work. It is designed to provide a simple, economical method of exposing aggregates in freshly poured facedown pre-cast concrete or face-up panels or slabs. Vetotard XT428's function is to retard the hydration of cement at the surface matrix of the concrete.
Vetotard XT428 is supplied in a 20 Liter container.
Coverage: 5 - 8 m2/Liter.
Stated consumption data are for general guidance. Actual consumption depends on the nature of the substrate, method of application, and wastage.
Vetotard XT428 shelf life is 12 months under normal warehouse storage conditions. Protect Vetotard XT428 from frost. If the material becomes frozen, it should be completely thawed and then thoroughly mixed before use.
Vetotard XT428 should be applied in one even coat using a brush or roller. The coverage rate is 5 - 8 m2 per liter.
It is possible to spray Vetotard XT428 but would need to dilute with 5 - 10% water to achieve sprayable consistency. Stir well before use.
Before concrete is placed, the surface retarder should be dry for face-down application. This typically takes 15 to 60 minutes depending on ambient conditions, whereas, in the case of face-up, Vetotard XT428 should be applied immediately after concrete placement is complete in wet conditions.
Immediately after the concrete molds are stripped, the retarded surface of the concrete can be exposed either by brushing and/or water washing. Water washing should be carried out using a high-pressure water jet between 1000 and 2000 psi (5 to 10 N/mm2). Dry brushing requires the use of a wire brush.
To bring out the full color of the aggregate for decorative finishes, wash the concrete face with a dilute hydrochloric acid solution (5% concentration.
Clean all tools and equipment with water immediately after use.
Seal timber form-work with a suitable polyurethane sealer. Clean form-work and molds and dry before application.
Vetotard XT428 is essentially non-toxic unless ingested in large quantities.
Skin and eye contamination - May be removed by washing with water. If eye contact is severe or significant ingestion occurs, seek medical advice.
Vetotard XT428 is non-flammable.
Saveto endeavors to ensure that any advice, recommendations, information it may give is accurate and correct. It cannot accept any liability either directly or indirectly arising from the use of its products because it has no direct or continuous control over where or how its products are applied, whether or not following any advice, specification, recommendation, or information given by us. Saveto has the right to change any of the specifications mentioned in the Technical data sheets upon its discretion without prior notification.
Hard copies of TDSs are printed once or twice a year. Our technical data sheets are continuously updated as per R&D improvements and new 3rd party testing; kindly refer to our website for the latest updated TDSs.
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