Solid Silane Coating

Description

Solid Silane SS801 is an innovative aqueous thixotropic silane cream that contains over 80% octyltriethoxysilane and siloxane. It is a high‑quality water‑repellent treatment for the protection of concrete structures against water and chloride ion ingress. Silane cream technology solves the key issues of liquid silane and siloxane products, which often run off surfaces causing waste and contamination. Common liquid treatments such as iso‑butyltriethoxysilane also evaporate during application and curing, leading to further product loss.

Evidence shows that the long carbon chain octyltriethoxysilane in the silane cream provides better alkali stability than the shorter chain iso‑butyltriethoxysilane. Consequently, the cream ensures long‑term durable protection for concrete. The silane cream typically requires only one coat, which results in savings in both material and labour costs. Liquid silane or siloxane products usually demand multiple applications to achieve satisfactory impregnation performance.

Recommended Uses

Use Solid Silane SS801 to treat concrete infrastructures such as roads, bridges, wharves, and other substrates, preventing reinforcement corrosion caused by water and chloride ions. It can also be used as a coating primer to significantly increase the durability of the concrete coating system. The silane cream can be re-applied to the treated concrete surface that may be previously treated with either a silane cream or a liquid silane or siloxane product.

Key Features of SOLID SILANE

• Innovative aqueous thixotropic cream technology with high active silane.
• One coat of application can achieve deeper impregnation depth.
• Suitable for horizontal, vertical and overhead surfaces without run off or evaporation.
• Easy quality control by a wet film gauge.
• Siloxane bonding to concrete resulting in durable long-term protection.
• UV, alkali and weathering stable.
• Significantly reduces water and chloride ion absorption.
• No significantly change in surface appearance and vapour permeability.
• Environmentally-friendly water-based non-toxic formulation.

Before Application

Please read and fully understand the product data sheet before use. Follow the related specifications and/or local industrial standards for application.

Cure new concrete for 28 days before applying the product. Clean the surface of dust by sweeping or using compressed air. Thoroughly clean old concrete with superheated steam or a high‑pressure water jet and a suitable cleaning agent such as alkaline detergent to remove soils, grease, and other residues. Strip any curing compounds or surface coatings completely before applying the silane cream.

Wash the concrete surface before application and allow it to dry for up to 24 hours under good weather conditions. Confirm surface dryness by ensuring no damp patches are visible. Measure moisture content in the surface zone to a depth of 20 mm using suitable equipment, ensuring it does not exceed 4% by weight.

Application Process

• Apply silane cream with an airless sprayer. Operate the sprayer at low pressure with a large nozzle to prevent liquefaction from high shear. For small areas, apply the cream by brush, or roller. Avoid overspraying onto untreated areas. If overspray occurs, remove it immediately with a clean, dry cloth.
• Apply one coat of silane cream for general concrete protection. Apply a second coat only if necessary. After application, the cream liquefies into a gel‑like silane that gradually absorbs into the surface. Depending on atmospheric conditions, absorption takes about 30–60 minutes. Once absorbed, the surface remains dark for a few days before returning to its original colour. The initial water‑repellent (beading) effect develops after drying, while full curing may take 7 days or longer.
• Protect the treated surface from heavy traffic or rain for 24 hours. Wash all equipment with water after use. If unexpected rain or other interference occurs, shield the treated surface for up to 24 hours

Application Rate

Depending on concrete and atmospheric conditions, the application rate of Solid Silane SS801 may vary from 100g to 300g per square meter per coat. A typical rate at 200g/sqm (or approximately 220 microns of a wet film thickness) in one application is usually sufficient for treating concrete with the strength of up to 50MPa. At 200g/sqm, Solid Silane SS801 can achieve an average mimimum 4 mm impregnation depth that is sufficient to provide durable protection against water and chloride ion ingress.

Determine the application rate by observing when the applied cream liquefies into a gel‑like silane that slowly absorbs into the surface before runoff begins. On very dense surfaces, reduce the application rate to prevent silane runoff. Apply a second coat if needed to achieve adequate impregnation depth, though it may not always be necessary. Conduct a test to confirm whether a second coat is required.

Pilot Test and Quality Control

Conduct a pilot test on a small on‑site area before application to determine the correct technique and suitable application rate. Control wet film thickness with a wet film gauge during application to ensure uniform coverage of silane cream across the surface. Refer to the Use Specifications of Solid Silane SS801 for further details.

Further Information

Tech-Dry silane cream meets the requirements of most specifications or standards for concrete protection by silanes. Refer to the technical reports for further details.

Typical Data

• Appearance: White Cream
• Active contents: >80%
• Specific Gravity:  0.9 g/ml at 20 ^oC
• pH value: 7-8
• Solubility in water: miscible in water
• VOC content: <20g/litre
• Flash point:>61oC

Important Note

Solid Silane SS801 penetrates into the capillaries and renders the concrete surface hydrophobic while still allowing the open capillaries to breath. The hydrophobic surface significantly reduces water absorption of the concrete.  However it may have limited resistance to water penetration particularly under prolonged contact or hydrostatic pressure.  Therefore, in some cases where the concrete is very permeable or under extreme wind driven rain, resistance to water penetration or harmful salts such as chloride ions may not be adequate.

Handling & Storage

Solid Silane SS801 is non‑hazardous. Follow good industrial hygiene practices when using this product. Refer to the safety data sheet for handling instructions. Avoid vapour inhalation and skin or eye contact by wearing appropriate protective equipment. Use an air‑purifying respirator if high vapour concentrations are likely. Wash hands after handling. Store the product in closed containers in a cool, dry place away from fire or ignition sources. Shelf life is 6 months in the sealed original container when stored below 25 °C.

USE UNDER SUFFICIENT VENTILATION AWAY FROM ANY FIRE OR IGNITION SOURCES.

KEEP OUT OF REACH OF CHILDREN.

Packaging

Solid Silane SS801 is available in 5 and 20 litre plastic drums. Other sized containers are available on request.