Belzona 4911
Magma TX Conditioner
A two-component thixotropic primer and conditioner for masonry and metallic substrates ahead of Belzona 4000 Series products.
A two-component thixotropic resin system used as a substrate primer and conditioner ahead of Belzona 4000 Series concrete repair products and chemical-resistant coatings. Damp substrate tolerant.
- SeriesBelzona 4000 Series
- Documents2
Overview of Belzona 4911
Belzona 4911 (Magma TX Conditioner) is a two-component, thixotropic resin system with excellent adhesion to masonry and metallic surfaces. The product is engineered as a substrate primer and conditioner used ahead of Belzona 4000 Series concrete repair compounds and chemical resistant coatings, especially in applications where the substrate is damp, porous, or subjected to severe loads.
The 2.2:1 by weight Base-to-Solidifier system delivers tensile shear adhesion of 2,960 psi (20.4 MPa) to grit-blasted steel and pull-off adhesion with cohesive failure within concrete (790 psi dry, 590 psi damp), brick (1,010–1,110 psi), and quarry tile (1,510–1,900 psi). Coverage of 79 sq.ft. (7.3 m²) per 3 kg unit at the recommended overcoating window of 6 hours. Recognized by U.S.D.A.
Key Benefits
Exceptional compressive strength for load-bearing applications and demanding mechanical environments
Bonds strongly to virtually any rigid surface
100% solids formulation reduces health and safety risks in confined spaces with no shrinkage on cure
No solvents, no shrinkage during cure
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Floor Problem Areas
1 applicationTechnical Data
Composition
- Type
- Two-component, thixotropic resin system substrate conditioner and primer
- Mixing Ratio by Weight (Base : Solidifier)
- 2.2 : 1
- Mixing Ratio by Volume (Base : Solidifier)
- 2 : 1
Components
- Base
- Opaque thixotropic liquid, sag index minimum 50 mil (1,250 µm), density 1.16 g/cm³
- Solidifier
- Clear liquid, viscosity 10–12 poise at 77°F (25°C), density 1.04 g/cm³
Application & Coverage
- Working Life at 77°F (25°C)
- 30 minutes from commencement of mixing
- Coverage Rate (450 g unit)
- 12 ft² (1.1 m²)
- Coverage Rate (3 kg unit)
- 79 ft² (7.3 m²)
- Overcoating Window
- Within 6 hours of application
Compressive Strength (ASTM D659, 7-day cure at 77°F)
- Compressive Strength
- 7,790 psi (53.7 MPa)
Flexural Strength (ASTM D790, 7-day cure at 77°F)
- Flexural Strength
- 7,810 psi (53.8 MPa)
Adhesion
- Tensile Shear, grit blasted steel (ASTM D1002)
- 2,960 psi (20.4 MPa)
- Pull-off, dry concrete (ASTM D4541)
- 790 psi (5.4 MPa)*
- Pull-off, damp concrete
- 590 psi (4.1 MPa)*
- Pull-off, dry brick
- 1,010 psi (6.9 MPa)*
- Pull-off, damp brick
- 1,110 psi (7.6 MPa)*
- Pull-off, dry quarry tiles
- 1,900 psi (13.1 MPa)*
- Pull-off, damp quarry tiles
- 1,510 psi (10.4 MPa)*
- * Cohesive failure within substrate — bond exceeds substrate strength
Approvals/Acceptances
- U.S.D.A.
Shelf Life
- Separate Base and Solidifier components have a 5-year shelf life from date of manufacture in original unopened containers stored between 41°F (5°C) and 86°F (30°C)
Working Life
From commencement of mixing, use within:
- 41°F (5°C)
- 230 minutes
- 50°F (10°C)
- 105 minutes
- 59°F (15°C)
- 55 minutes
- 68°F (20°C)
- 45 minutes
- 77°F (25°C)
- 32 minutes
Overcoating Window
Belzona 4911 is a conditioner — overcoating with the topcoat product can begin as soon as conditioning is complete and must be completed within the maximum overcoating time: If the maximum overcoating time is exceeded, the cured surface should be abraded and fresh Belzona 4911 applied.
- Minimum overcoating time
- Application can commence as soon as conditioning has been completed
- Maximum overcoating time (all temperatures 41°F–77°F / 5°C–25°C)
- 6 hours
Service Temperature Limits
- Working Life at 77°F (25°C)
- 30 minutes — use all material within this time
- Overcoating Window
- Belzona 4911 must be overcoated within 6 hours
- Storage Temperature
- 41°F (5°C) to 86°F (30°C) in unopened containers
- Service temperatures determined by overcoat selection — refer to the Belzona 4000 Series product PSS for thermal limits of the cured system
Product PDFs
Gallery
Frequently Asked Questions
What is Belzona 4911 (Magma TX Conditioner) used for?
Belzona 4911 (Magma TX Conditioner) is a 2-part epoxy conditioner designed to be applied to concrete, stone, and similar substrates prior to the application of Belzona 4000 Series repair materials and coatings. It penetrates the substrate, sealing porosity and improving adhesion of the subsequent Belzona system.
What is the mixing ratio of Belzona 4911 (Magma TX Conditioner)?
The mixing ratio of Belzona 4911 (Magma TX Conditioner) is 2.2 : 1 (Base : Solidifier) by weight and 2 : 1 (Base : Solidifier) by volume. Please see the Product Specification Sheet (PSS) for more information.
How do you apply Belzona 4911 (Magma TX Conditioner)?
To apply Belzona 4911 (Magma TX Conditioner), the substrate must be clean, firm, and dry, free of any paint, oils, or other contaminants. Empty the entire contents of the Solidifier into the Base unit and mix thoroughly until completely homogeneous. From the commencement of mixing, apply Belzona 4911 to the prepared surface within 30 minutes using a short-bristled brush or roller, ensuring full coverage and penetration. Apply the subsequent Belzona 4000 Series material wet-on-tacky as specified in the relevant Instructions for Use. Please see the Instructions for Use (IFU) for more information.
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