EPIREZ® Heavy Duty Backing Grout 5137 is a non-shrink, heavy-duty epoxy grout designed for demanding industrial and structural applications. Its flowable consistency allows it to fill fine voids and cavities down to 2 mm, before hardening into a tough, impact-resistant backing.
Heavy Duty Backing Grout 5137 is particularly suited to backing crusher manganese steel liners, where it provides support to the components and protection for supporting structures. It is also suitable for machine bases, bearing supports, bridge footings and rail grouting.
The grout provides high compressive strength, excellent mechanical strength and good chemical resistance without requiring aggregate to be added. It can be used for pours from 2 mm to 50 mm, depending on the volume of the pour.
The product was previously named EPIREZ® 5137.
Key Features and Benefits
- Non-shrink epoxy grout: Designed for precision backing and support applications.
- Fine void filling: Flows into cavities and voids down to 2 mm.
- High compressive strength: Minimum stated compressive strength is 104 MPa.
- Impact resistant: Hardens into an extremely tough, impact-resistant backing.
- Excellent mechanical strength: Designed for demanding equipment support applications.
- No aggregate required: Easy mixing without adding aggregate.
- Good chemical resistance: Suitable for corrosive industrial environments.
- Wide pour range: Suitable for pours from 2 mm to 50 mm.
- Self-extinguishing: Meets the stated ASTM D635 flammability classification.
Where Can EPIREZ Heavy Duty Backing Grout 5137 Be Used?
Heavy Duty Backing Grout 5137 is designed for demanding mining, quarrying, industrial and structural applications.
- Backing for crushing equipment
- Manganese steel crusher liners
- High-strength bearing supports
- Machine bases in corrosive environments
- Bridge footings
- Rail grouting
The product has been used by major mining and quarrying operators throughout Australia, Asia and the Pacific region.
Backing Grout for Crusher Liners
EPIREZ® Heavy Duty Backing Grout 5137 is designed as a backing grout for crusher manganese steel liners.
The grout flows behind the liner and into fine voids before hardening to provide support to the components and protection for the supporting structure.
For crusher liner applications, the product's non-shrink properties and high mechanical strength provide a solid backing system for demanding equipment environments.
Coverage and Pour Thickness
| Pack Size | Mixed Volume | Pour Thickness |
|---|---|---|
| 10 kg | 6 litres | 2–50 mm |
The suitable pour thickness depends on the volume of the pour. For specific recommendations based on the project, technical advice should be obtained before application.
Surface Preparation
Prepare surfaces according to whether the grout needs to bond to the substrate or release from it.
- New concrete should be at least 28 days old.
- Prepare the substrate to provide the required adhesion or release.
- Use suitable formwork where required.
- Formwork that provides a material head can help the grout flow into finer cavities and voids.
Mixing Instructions
Heavy Duty Backing Grout 5137 uses a 1 part Hardener to 5 parts Compound by volume, or 1 part Hardener to 10 parts Compound by weight.
- Precondition the product to between 18°C and 25°C before use.
- Pour the Hardener into the Compound container.
- Mix thoroughly for 5 minutes using a suitable blade fitted to a 400 rpm power mixer.
- Ensure all material from the sides, container lip and stirrer is incorporated.
- Avoid air entrapment during mixing.
Full units are recommended because the components are pre-measured.
Application
After mixing, pour the grout slowly from one side of the application area to minimise air entrapment.
Do not aerate the mixed material during application.
Formwork that creates a suitable head of material can assist the grout in flowing into fine cavities and voids.
Drying and Cure Times
| Condition | Work Time | Setting Time | Cure Time |
|---|---|---|---|
| 25°C | 30 minutes | 6 hours | 24 hours |
| 15°C | 60 minutes | 12 hours | 48 hours |
Important Product Limitations
- Do not apply below 10°C.
- Pour thickness is from 2 mm to 50 mm, depending on the volume of the pour.
- Avoid air entrapment during mixing and pouring.
- New concrete should be at least 28 days old.
- Allow the grout to cure before subjecting it to service conditions.
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® Heavy Duty Backing Grout 5137 |
| Previous Name | EPIREZ® 5137 |
| Product Type | Non-shrink heavy-duty epoxy backing grout |
| Mixed Colour | Green |
| Mixing Ratio by Volume | 1 Hardener to 5 Compound |
| Mixing Ratio by Weight | 1 Hardener to 10 Compound |
| Initial Mixed Viscosity | <10 Pa.s at 25°C |
| Work Time @ 25°C | 30 minutes |
| Work Time @ 15°C | 60 minutes |
| Setting Time @ 25°C | 6 hours |
| Setting Time @ 15°C | 12 hours |
| Cure Time @ 25°C | 24 hours |
| Cure Time @ 15°C | 48 hours |
| Minimum Compressive Strength | 104 MPa |
| Brinell Hardness | 57 |
| Maximum Casting Thickness | 50 mm |
| Maximum Service Temperature | 130°C |
| Flammability | Self-extinguishing according to ASTM D635 |
| Dielectric Constant | 3.3 at 100 kHz, 25°C |
| Dielectric Strength | 180 kV/cm |
| Kit Size | 10 kg |
| Mixed Volume | 6 litres |
| Shelf Life | 2 years |
Important: Always read the current manufacturer's Technical Data Sheet before mixing, surface preparation or application.
Why Buy EPIREZ Heavy Duty Backing Grout from Epoxy Warehouse?
Epoxy Warehouse is a trusted Australian supplier of professional coating, repair and grouting systems, including epoxy, polyurethane and polyaspartic products. As an authorised EPIREZ® distributor, we supply EPIREZ® products for industrial, mining, commercial and construction applications.
With Australia-wide delivery, Epoxy Warehouse makes it easier to source specialist products for demanding equipment, concrete repair and industrial applications. We are trusted by Australian customers and coating professionals and offer a specialist range for industrial repair, grouting, flooring and surface protection.
Colour accuracy disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.
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.

