Manta LO320E Isooctyltriethoxysilane Paste

Manta LO320E is a silane paste containing ~80% active isooctyltriethoxysilane. Designed specifically for the deep waterproofing and protection of reinforced concrete, its unique thixotropic (paste-like) consistency allows for thick, single-coat applications on vertical and overhead surfaces without sagging or dripping.

This non-sag property ensures extended contact time and exceptionally deep penetration into the dense concrete matrix. Manta LO320E provides long-lasting protection for new construction and serves as a highly effective restoration treatment for aging infrastructure. By creating a permanent, breathable, hydrophobic barrier, it effectively inhibits the ingress of water and waterborne corrosion factors (such as chloride ions), protecting the internal reinforcing steel and significantly extending the service life of the structures.

Equivalent to Wacker SILRES® BS Creme C, Sika Sikagard®-706 Thixo.

Properties

• Exceptional Penetration: Small molecular size and extended dwell time allow penetration depths of 3–4 mm into dense concrete.
• High Waterproofing Efficiency: Reduces capillary water absorption of the concrete structure by over 90%.
• Rebar Corrosion Protection: Drastically reduces chloride ion penetration by more than 90%.
• 100% Breathable: Forms a water-vapor-permeable network without forming a surface film; no blistering or peeling.
• Micro-Crack Bridging: Effectively treats and protects dynamic micro-cracks up to 0.2 mm.
• Aesthetic Retention: Does not darken or alter the original appearance of fair-faced concrete.
• Thixotropic Zero-Waste: Highly efficient for facade and overhead applications; minimizes material loss and saves overall construction costs.
• Extreme Durability: Outstanding alkali and UV resistance, offering a protective service life of 10–15 years.

Manta LO320E is highly suitable for the long-term protection of concrete structures exposed to severe environmental stressors, including chloride-induced corrosion (from seawater, salt spray, and de-icing salts) and freeze-thaw damage.

Transportation Infrastructure: Marine and overwater bridges, highway/expressway piers, urban viaducts, tunnels, and airport runways.

Marine & Water Projects: Seaports, coastal structures, dams, and water treatment infrastructure.

Industrial & Commercial Facilities: Thermal/nuclear power plants, and premium architectural (fair-faced) concrete buildings.

Application Guidelines

Concrete Age: Allow newly cast concrete to cure for at least 4 weeks (28 days). For newly repaired areas, allow at least 2 weeks of curing.

Surface Preparation: Repair obvious defects (honeycombing, exposed rebar, cracks) using suitable mortar. Thoroughly clean the surface to remove dust, oil, laitance, and efflorescence. Formwork release agents must be completely removed.

Moisture Content: The concrete surface must look visibly dry. Surface moisture content should not exceed 6%.

Construction Method: Apply using high-pressure airless spray (recommended for large areas), brush, or long-hair roller.

Recommended Dosage: Approx. 200 – 300 g/m² (Typically, 1 thick coat is sufficient; for highly porous substrates, 1-2 coats applied “wet-on-wet”).

Curing & Protection: Surface drying time is 2-3 hours. Complete curing takes >7 days. Protect the treated surface from rain for at least 24 hours after application.

Weather Conditions: Apply on dry days with temperatures between 5–40°C. Do not apply during rain, snow, freezing weather (< 0°C), or strong winds.

Tool Cleaning: Clean equipment with water immediately after use.