BestRetard GS320V

• Architectural concrete with a rough, textured surface or exposed natural aggregate, etc.

• Concrete at joints or construction joints requiring high roughness to enhance bonding for subsequent material layers.

• Concrete surfaces built up from multiple successive concrete pours or other bonding materials for the next steps, etc.

• Concrete with a rough surface for anti-slip purposes, etc.

• Pre-formulated mixture, easy to use, with stable quality.

• High retarding effect and low dosage, providing very high cost-effectiveness.

• Free of chloride ions, so it does not cause corrosion of steel formwork upon direct contact with the product.

• Does not reduce the final concrete strength if the product is accidentally spilled or mixed into the concrete.

• Does not reduce the final bond strength between concrete and reinforcement if the product adheres to the reinforcement before concrete placement.

• Allows the concrete to harden normally once the retarding period has elapsed.

• Does not impair the surface bond strength of aggregates or binders, as occurs with mechanical roughening methods.

• Easy to clean, non-toxic, and environmentally friendly.

• Does not alter the natural color of the concrete surface after the set-retarding period has elapsed and when applied correctly.

• Suitable for all types of Portland cement concrete, including white cement and sulphate-resistant cement.

• Suitable for the hot and humid climate conditions of Vietnam.

APPLICATION PROCEDURE

Application:

• Use a brush, roller, or spray nozzle to apply the product directly onto clean formwork. Apply one thick coat and allow it to dry for 2 – 4 hours.

• BestRetard GS320V will retard the setting of the concrete surface to a depth of 4-7mm, depending on the thickness of the applied material layer and the properties of the concrete.

• Formwork should be removed as soon as possible once the concrete has reached the formwork-stripping strength (usually 24 hours after concrete placement).

• The soft cement layer remaining on the formwork should be cleaned off immediately using a brush or a high-pressure water jet.

Note:

• Do not dilute or mix any other product or chemical with BestRetard GS320V when using it.

• Do not allow the product to be spilled or come into contact with other fresh concrete areas unnecessarily.

• Because the retarding performance and retarding duration of the product depend on many factors during use, such as the concrete mix design, cement content, water/cement ratio, type of cement used, ambient temperature, etc., trials must be carried out for each specific application condition to achieve the desired results regarding the depth of exposed aggregate, the surface washout time, etc.