Silanes & Alkyl Silanes
80% Silane Cream for Concrete Protection | Manta LO320E
Manta LO320E is a thixotropic silane paste (active content: About 80% isooctyltriethoxysilane) used for deep hydrophobic impregnation of reinforced concrete on bridges, marine structures, tunnels and other infrastructure. Its non-sag consistency allows thick, single-coat application on vertical and overhead surfaces without sagging or dripping, which extends contact time with the concrete.
- Grade
- LO320E
- Chemical Name
- Isooctyltriethoxysilane paste
- Form
- White paste
Overview
Manta LO320E is a silane paste based on isooctyltriethoxysilane, designed for the deep waterproofing and protection of reinforced concrete. Its thixotropic consistency allows thick, single-coat application on vertical and overhead surfaces without sagging or dripping, which extends contact time and supports deep penetration into the dense concrete matrix.
LO320E provides long-lasting protection for new construction and serves as a restoration treatment for aging infrastructure. It creates a durable, breathable, hydrophobic barrier that inhibits the ingress of water and waterborne corrosion factors such as chloride ions, helping to protect the internal reinforcing steel and extend the service life of the structure. It is suited to concrete exposed to chloride-induced corrosion from seawater, salt spray and de-icing salts and to freeze-thaw damage.
Manta LO320 is the liquid form of the same active. Manta WS120 is a water-based silane cream for similar surfaces (active content: ≥ 40%), so the choice depends on the active level your specification requires.
Key Features
- Thixotropic paste for thick, single-coat application on vertical and overhead surfaces
- Penetration depth of 3–4 mm into dense concrete through small molecular size and extended dwell time
- Significantly reduces capillary water absorption of the concrete
- Significantly reduces chloride ion penetration, helping to protect reinforcing steel
- Water-vapor-permeable network with no surface film, which helps to limit blistering and peeling
- Treats micro-cracks below 0.2 mm
- Does not darken or alter the original appearance of fair-faced concrete
- Low application loss on facades and overhead surfaces
- Good alkali resistance and durability
Cross-Reference
Manta LO320E can be considered as an alternative to Wacker SILRES BS Creme C.
Trademarks are the property of their respective owners; no affiliation is implied.
Specifications
| Property | Typical Value |
|---|---|
| Active Ingredient Content | About 80% |
| Appearance | White paste |
| Flash Point | 74°C |
| Density (25°C) | About 0.90 g/cm3 |
| Viscosity (20°C) | ≥ 5000 mPa·s |
| Hydrolyzable Chloride Content | ≤ 100ppm |
| Construction Method | Brush, roller, high-pressure airless spray |
| Recommended Dosage | 300 g/m2 |
| Number of Coats | 1~2 coats |
| Recoating Interval | After the previous coat is surface-dry |
| Tool Cleaning | Water |
| Surface Drying Time | 2~3 hours |
| Complete Curing | More than 7 days |
| Suitable Weather For Construction | Sunny day, wind below level 4, temperature 5~40°C |
| Unsuitable Weather For Construction | Rainy and snowy day, strong wind above level 5, freezing weather below 0°C |
Typical values from the current Technical Data Sheet.
Applications
- Transportation infrastructure: marine and overwater bridges, highway, expressway and railway bridges, piers, urban viaducts, tunnels and airport runways
- Marine and water projects: seaports, coastal structures, dams and water treatment infrastructure
- Industrial and commercial facilities: thermal and nuclear power plants and 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. 300 g/m² in 1–2 coats; apply the next coat after the previous coat is surface-dry.
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.
Related applications: Concrete, Masonry & Stone Protection
Packaging & Storage
Supplied in 20L pail, 50L pail.
Safety and Storage
Keep in original tightly sealed containers at 5–45°C. Protect from freezing and direct sunlight. Shelf life is 12 months.
Safety measures
Ethanol Release: Curing reaction releases ethanol. Ensure adequate ventilation when applied in enclosed spaces (e.g., tunnels, basements). Wear safety goggles and protective gloves during application. Avoid contact with plants and protect items that should not be exposed to solvents.
First Aid: Inhalation: Move to fresh air.
Skin: Wash with plenty of soap and water.
Eyes: Flush thoroughly with water for 15 minutes keeping eyelids open; seek medical attention.
Attention
The information listed in this document is based entirely on our knowledge gained in the laboratory and in practice. However, since the use of the product is usually beyond our control, we can only guarantee the quality of the product itself. We reserve the right to modify this product manual without prior notice.
Documents
- Technical Data Sheet · PDF Download TDS
- SDS and COA · on request Request Documents
Frequently Asked Questions
When should I choose the LO320E cream over liquid Manta LO320?
The thixotropic paste stays on vertical and overhead surfaces without sagging or dripping, which extends contact time for deeper penetration and reduces material loss on facades. LO320 is the liquid form of the same active.
How long must concrete cure before treatment with Manta LO320E?
Newly cast concrete needs at least 4 weeks (28 days) of curing before treatment, and newly repaired areas at least 2 weeks. The surface must look visibly dry, with a surface moisture content not exceeding 6%.
What curing time and weather window does Manta LO320E require?
Surface drying takes 2-3 hours and complete curing takes >7 days, and the treated surface must be protected from rain for at least 24 hours after application. Apply on dry days at 5–40°C with wind below level 4. Do not apply during rain, snow, freezing weather (< 0°C) or strong winds.
How does Manta LO320E help protect reinforcing steel?
It forms a durable, breathable hydrophobic barrier within the concrete that significantly reduces chloride ion penetration and capillary water absorption, so less water and fewer waterborne corrosion factors reach the reinforcing steel. Penetration depth into dense concrete is 3–4 mm, and micro-cracks below 0.2 mm can also be treated.
Related Products
LO320E is one step in the building protection formulation chain. One inquiry can cover the other raw materials in your formulation, with samples, technical documents, quotation and shipment handled together.
- Alkyl Silane Actives
- Emulsions & Pastes
- Siliconate Liquids & Powders
- Waterproof Coatings
Looking for a different purity, functional group, or a structure not listed here? Contact our technical team.
Talk to our technical team
Tell us your application, target properties and estimated quantity. We will suggest grades and arrange documents or samples.