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Sika MonoTop Primer & Corrosion Protection
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Sika MonoTop Primer & Corrosion Protection is a cementitious, polymer-modified, zinc-free, one-component coating designed to act as both a bonding primer for concrete repair mortars and as a corrosion protection system for reinforcing steel. It provides excellent adhesion to steel and concrete, forming a protective barrier against moisture, chlorides, and carbon dioxide, which can lead to corrosion. This product is an essential component in the Sika MonoTop concrete repair system, improving the durability and performance of concrete repairs in structural and non-structural applications.
Description
Uses
Primary Uses
Concrete Repair & Structural Rehabilitation
- Applied to exposed steel reinforcement to provide long-term corrosion protection before patch repair.
- Used as a bonding bridge between existing concrete and repair mortars in concrete restoration.
- Enhances adhesion and compatibility of repair mortars such as Sika MonoTop systems.
- Prevents corrosion in repair applications on facades, bridges, parking structures, tunnels, and piers.
Infrastructure Maintenance
- Corrosion protection in bridge decks, retaining walls, and marine concrete elements.
- Used in transportation infrastructure such as highways and tunnels undergoing concrete rehabilitation.
Industrial & Commercial Buildings
- Applied in repair projects for concrete columns, beams, and slabs in commercial and industrial facilities.
Secondary Uses
Historical & Heritage Restoration
- Applied during conservation of historical structures to prevent rebar corrosion while maintaining structural integrity.
Marine Structures
- Used for reinforcement protection in repairs on docks, jetties, and offshore platforms exposed to aggressive saline conditions.
Precast Concrete Plants
- As a corrosion-inhibiting primer in the repair of precast elements before patching or coating.
PRODUCT KEY FEATURES
Basic Identification Attributes
- Chemical Name (IUPAC): Cementitious polymer-modified coating (zinc-free)
- Common/Trade Name: Sika MonoTop Primer & Corrosion Protection
- CAS Number: Mixture (varies by batch formulation)
- HS Code: 3214.10 (Prepared mastics and sealing compounds)
- Synonyms: MonoTop Rebar Primer; Reinforcement Primer
Physical & Chemical Properties
- Physical State: Powder (requires mixing with water)
- Color & Odor: Grey when mixed; low odor
- Mixing Ratio: Approx. 0.27 liters of water per 1 kg of powder
- Working Time: ~45 minutes at 20°C
- Density (mixed): ~2.0 g/cm³
- Application Thickness: 1–2 mm recommended
- pH: Alkaline when mixed
Safety & Hazard Attributes
- GHS Classification: Irritant (eye, skin); contains cement which can cause serious eye damage
- Toxicity: Low when used as directed; irritation possible from dust or wet contact
- Exposure Limits: Avoid inhalation of dust; refer to SDS for specific occupational exposure limits
Storage & Handling Attributes
- Storage Conditions: Store in unopened, original packaging in dry, cool conditions away from moisture
- Container Type: Multi-layer paper bags with moisture barrier (typically 20–25 kg)
- Shelf Life: 6 months from manufacture if properly stored
- Handling Precautions: Wear gloves, eye protection, dust mask; avoid prolonged skin contact or inhalation of dust
Regulatory & Compliance Attributes
- Complies with EN 1504-7 for corrosion protection of reinforcement steel
- Manufactured under ISO 9001 and ISO 14001 standards
- Meets VOC regulations for building and repair materials in Europe, North America, and Asia
- REACH-compliant and does not contain zinc or hazardous volatile components
- Suitable for use in concrete repair projects requiring CE marking under EU construction product standards
Environmental & Health Impact
- Biodegradability: Not biodegradable; inert when cured
- Ecotoxicity: Low; environmentally safe once fully cured
Bioaccumulation: Not expected
SAFETY HANDLING PRECAUTIONS
Safety Handling Precautions
- PPE Required: Gloves, safety goggles, dust mask or respirator during mixing and application
- Handling Guidelines: Use in well-ventilated areas; avoid inhalation and direct contact
- Storage Measures: Keep dry and tightly sealed to prevent moisture ingress
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if symptoms persist
- Skin Contact: Rinse with water; remove contaminated clothing; seek medical help for irritation
- Eye Contact: Rinse cautiously with water for several minutes; seek immediate medical attention
- Ingestion: Rinse mouth; do not induce vomiting; seek medical attention
Firefighting Measures
- Fire Hazards: Not flammable
- Extinguishing Media: Use media appropriate for surrounding materials
- Special Precautions: No specific hazards for cured product
- Hazardous Combustion Products: None known; inert when set
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