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.

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

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.

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.

1. Mix using a stirrer fitted to a low-speed 400 rpm power mixer.
2. Ensure all material from the container sides, lip and stirrer is incorporated.
3. Avoid air entrapment during mixing.
4. Keep the mixer propeller below the liquid line.
5. 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.

Technical Specifications

Important: Always read the current manufacturer's Technical Data Sheet before mixing, surface preparation or application.