EPIREZ Non-Sag Epoxy Mortar Binder 633
EPIREZ Non-Sag Epoxy Mortar Binder is a solventless epoxy binder designed for vertical, overhead and inclined applications. Its non-sag consistency allows it to be used for demanding repair and bonding work where conventional epoxy mortars may not stay in position.
Non-Sag Epoxy Mortar Binder 633 can be applied to damp or wet surfaces and provides excellent adhesion to wet or dry concrete. When combined with EPIREZ® Patching & Flooring Mortar Aggregate (QA2), it can be used to prepare thixotropic epoxy mortars for vertical and overhead repairs, grouting and other structural applications.
The binder provides high mechanical strength, high chemical resistance and a non-shrink formulation. It is also suitable for low-temperature curing within its specified application temperature range.
EPIREZ® Non-Sag Epoxy Mortar Binder has been independently tested and meets the requirements of AS/NZS 4020:2018 for use in contact with potable water.
The product was previously named EPIREZ® 633.
Key Features and Benefits
- Non-sag consistency: Designed for vertical, overhead and inclined applications.
- Wet-surface adhesion: Provides excellent adhesion to wet or dry concrete.
- High mechanical strength: Ultimate compressive strength is 95 MPa after seven days.
- High tensile strength: Ultimate tensile strength is 62 MPa.
- Solventless formulation: Contains 100% solids and 0 g/L VOC.
- Non-shrink: Designed for repair and structural bonding applications.
- High chemical resistance: Provides resistance to a range of acids, alkalis and solvents.
- Aggregate extendable: Can be combined with EPIREZ® QA2 aggregate for epoxy mortar applications.
- Low-temperature cure: Suitable for application temperatures from 10°C to 30°C.
- Potable water contact: Meets AS/NZS 4020:2018 requirements for use in contact with potable water.
Where Can EPIREZ® Non-Sag Epoxy Mortar Binder Be Used?
Non-Sag Epoxy Mortar Binder 633 is designed for a range of vertical, overhead, underwater and structural repair applications.
- Bonding new to old concrete on vertical surfaces
- Protecting exposed reinforcing bar
- Vertical and overhead concrete repairs
- Grouting bolts and anchors in vertical surfaces
- Underwater and splash-zone repairs
- Bonding precast concrete units
- Bonding steel and timber to concrete
- Structural repair of spalled concrete and masonry
- Pile restoration repairs
Coverage and Estimating Data
| System | Estimated Coverage | Thickness |
|---|---|---|
| 1 L Non-Sag Epoxy Mortar Binder | 1 m² | 1 mm thick |
| 1 L Binder + 2 L EPIREZ® Patching & Flooring Mortar Aggregate (QA2) | 1 m² | 2 mm thick |
Application Areas and Aggregate Ratios
Non-Sag Epoxy Mortar Binder can be combined with EPIREZ® Patching & Flooring Mortar Aggregate (QA2) at different ratios depending on the application.
- Vertical and overhead concrete repairs: 1 part binder to 2 parts QA2 by volume.
- Grouting on vertical surfaces: 1 part binder to 1 part QA2 by volume.
- Underwater and splash-zone repairs: 1 part binder to 2 parts QA2 by volume.
- Pile restoration repairs: 1 part binder to 1 part QA2 by volume.
Vertical and Overhead Concrete Repairs
For vertical and overhead concrete repairs, EPIREZ® Non-Sag Epoxy Mortar Binder can be combined with EPIREZ® Patching & Flooring Mortar Aggregate (QA2) at a 1:2 ratio by volume.
The resulting repair system has a stated compressive strength of 85 MPa, tensile strength of 12 MPa and water permeability of 2 × 10-17 m/s.
Grouting on Vertical Surfaces
For vertical grouting applications, the binder and QA2 aggregate are typically combined at a 1:1 ratio by volume.
Pull-out testing with deformed reinforcing bars produced the following results:
- 12 mm deformed bar: Bar failure.
- 18 mm deformed bar: Concrete failure.
Underwater and Splash-Zone Repairs
For underwater and splash-zone repairs, Non-Sag Epoxy Mortar Binder can be combined with QA2 aggregate at a 1:2 ratio by volume.
When placed and cured under seawater, the repair system achieved:
- Tensile bond strength: 2.4 MPa, with concrete failure.
- Compressive strength: 50 MPa.
- Water permeability: 2 × 10-17 m/s.
Pile Restoration Repairs
For pile restoration, the binder and QA2 aggregate are typically combined at a 1:1 ratio by volume.
The technical data provides the following comparison with the original pile:
- Concrete piles: Eroded pile — 71% of new pile; repaired pile — 113% of new pile.
- Timber piles: Eroded pile — 26% of new pile; repaired pile — 102% of new pile.
Surface Preparation
Remove all loose, crumbly and drummy areas to create a sound concrete surface.
- Captive blast clean or acid etch to expose firmly held aggregate.
- Remove dust, oil and grease.
- Dampness can be tolerated.
- For critical applications, porous concrete can be primed with EPIREZ® Epoxy Primer / Sealer 123.
The surface should be sound and properly prepared before application.
Mixing Instructions
Measure enough Hardener and Compound to be used within the 30-minute work time.
- Mix using a stirrer fitted to a low-speed 400 rpm power mixer.
- Ensure all material from the container sides, lip and stirrer is incorporated.
- Avoid air entrapment during mixing.
- Keep the mixer propeller below the liquid line.
- If using QA2 aggregate, add the appropriate quantity after the Hardener and Compound are fully mixed.
Full units are recommended because the components are pre-measured.
Drying and Cure Times
- Work time at 25°C: 30 minutes
- Tack-free time at 25°C: 6 hours
- Hardening time at 25°C: 24 hours
- Full chemical resistance: 7 days at 25°C
Potable Water Use
EPIREZ® Non-Sag Epoxy Mortar Binder has been independently tested and meets the requirements of AS/NZS 4020:2018 for use in contact with potable water.
Temperature Resistance
- Wet: 65°C
- Dry: 120°C
Important Product Limitations
- Application temperature range is 10°C to 30°C.
- Material should be measured and mixed according to the specified ratio.
- The available work time at 25°C is approximately 30 minutes.
- Avoid air entrapment during mixing.
- For critical porous concrete applications, use EPIREZ® Epoxy Primer / Sealer 123.
Storage and Shelf Life
- Store in dry conditions between 10°C and 30°C.
- Keep away from sources of heat and naked flames.
- Protect from frost.
- Minimum shelf life is two years when stored in original sealed containers.
Technical Specifications
| Specification | Technical Data |
|---|---|
| Product | EPIREZ® Non-Sag Epoxy Mortar Binder |
| Previous Name | EPIREZ® 633 |
| Product Type | Solventless epoxy mortar binder |
| Colour | Grey when mixed |
| Solids Content | 100% |
| VOC Content | 0 g/L |
| Mixing Ratio by Volume | 1 Part Hardener : 3 Parts Compound |
| Work Time @ 25°C | 30 minutes |
| Tack Free Time @ 25°C | 6 hours |
| Hardening Time @ 25°C | 24 hours |
| Full Chemical Resistance | 7 days at 25°C |
| Mixed Viscosity | Paste |
| Application Temperature | 10°C to 30°C |
| Ultimate Compressive Strength | 95 MPa |
| Compressive Modulus | 3.4 GPa |
| Ultimate Tensile Strength | 62 MPa |
| Water Permeability | 2.0 × 10-17 m·s-1 |
| Temperature Resistance — Wet | 65°C |
| Temperature Resistance — Dry | 120°C |
| Potable Water | Meets AS/NZS 4020:2018 requirements for use in contact with potable water |
| Concrete Coverage | 1 m² per litre at 1 mm thick |
Important: The information on this page is a summary of the supplied technical information. Always read the current manufacturer's Technical Data Sheet before mixing, surface preparation or application.
Why Buy EPIREZ Non-Sag Epoxy Mortar Binder from Epoxy Warehouse?
Epoxy Warehouse is a trusted Australian supplier of professional coating systems, including epoxy, polyurethane and polyaspartic coatings. As an authorised EPIREZ distributor, we supply EPIREZ® products for industrial, commercial, construction and specialist repair applications.
With Australia-wide delivery, Epoxy Warehouse makes it easier to source professional coating products for projects across Australia. We are trusted by Australian customers and coating professionals and offer a specialist range for concrete repair, structural applications, flooring and surface protection.
- Trusted Australian supplier of epoxy, polyurethane and polyaspartic coatings.
- Authorised distributor of EPIREZ® products.
- Australia-wide delivery.
- Specialist products for industrial, commercial and construction applications.
- Technical product information to support informed product selection.
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Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.
