Cylindrical Mould: instead of a conical shape, the test uses a vertical cylinder geometry to simplify the relation between slump and yield stress.

Robust Materials: constructed from stainless steel

The aranzu Boger Slump Cylinder is intended for use in mining operations, paste backfill plants, and underground distribution systems to provide quality control (QC) and process verification of backfill consistency before pouring into stopes. Typical applications include:

• Confirming that the paste mixture from surface plant meets design rheological specifications before underground injection.
• Monitoring consistency from batch to batch to detect deviations in solids concentration, binder addition, or mixing efficiency.
• Correlating slump-derived yield stress to pipeline pressure loss and hydraulic behaviour in underground distribution lines.
• Verifying that the backfill will flow adequately without segregation or blockage, yet retain sufficient strength when cured.
• Performing routine spot checks in underground laboratories or backfill control labs.
• Many mining operations combine Boger slump tests with other rheological tests (e.g. vane yield stress, viscometer, flow-loop tests) as a practical QC tool.

The aranzu Backfill Mixer Paddles are designed for durability and efficiency. With a focus on minimising premature wear, these paddles are tailored to meet the demands of heavy-duty mixing processes. Each paddle is constructed from high wear-resistant materials to ensure optimal strength and performance. Our proprietary alloy significantly increases wear resistance, delivering improved longevity over existing units in the market. All paddles come with corrosion protection and are painted according to aranzu’s standard specification for enhanced resilience.

These paddles are specifically designed for use in backfill mixers, making them ideal for mining backfill projects. They are highly effective in ensuring efficient mixing of backfill material, contributing to stable, high-quality fills in underground mining operations. By significantly extending paddle life, these solutions ensure greater uptime and more consistent operational efficiency.

aranzu offers a variety of materials for the paddles, allowing us to match the exact requirements of different backfill mixer applications. Our paddles can be customised with a range of materials to suit the unique demands of your operational environment, whether you're handling abrasive or corrosive materials.

At aranzu, we understand that every client has unique operational needs. We offer full customisation of our Backfill Mixer Paddles, including material composition, design alterations, and surface treatments. Client-specific requirements can be adhered to upon written request, ensuring that each product meets the precise specifications of your operation. Furthermore, all our products conform to aranzu’s stringent quality control procedures, guaranteeing reliability and performance in the field.

This system is ideal for use in underground mining operations where stope backfilling is essential. It plays a crucial role in the:

• Pouring Stage: Measuring pressure against the bulkhead to ensure safe and even filling.
• Curing Period: Detecting the cement plug at the end of the curing period of the first lift.
• Post-Pour Monitoring: Monitoring the effects of the remaining pour once the load is removed from the bulkhead.
• Final Curing: Measuring the stress taken on by the backfill itself after curing to ensure long-term stability.

Backfill sample curing.

The aranzu Backfill Monitoring System is versatile and can be adapted to various mining operations. It offers several variations to meet specific needs:

• Standard Configuration: For typical stope backfilling processes.
• Enhanced Sensor Package: For operations requiring additional data points and higher precision.
• Wireless Monitoring: For remote monitoring capabilities, reducing the need for manual data collection.

At aranzu, we understand that every mining operation has unique challenges and requirements. Our team is dedicated to providing customised solutions to meet your specific needs. Whether your operation requires additional sensors, specialised data integration, or bespoke software modifications, we work closely with you to tailor the aranzu Backfill Monitoring System to your exact specifications.

Contact us to discuss your custom requirements and how we can support your mining operations.

The container size selected for the containerised curing facility is dictated by the size and number of samples required to store. The containers are outfitted with rows of free draining shelving, centralised drain points, an HVAC system, humidifying system (optional), a work surface and a lockable doorway.

The curing facility is used for curing mine backfill samples, where the curing temperature is of importance for quality control purposes. The samples are cured in free draining cylindrical moulds (not included) or concrete cube moulds.

The containerised curing facilities are available in the following standard container sizes, namely: 6m and 12m. High cube options are also available.

The curing facility is not limited to only curing cementitious samples. The temperature and humidity range of the facility can be altered to any custom requirement on request.

Construction Materials:

• Smaller moulds are crafted from durable polyurethane (PU) for lightweight handling and easy demoulding.
• Larger moulds (200 mm and above) are made from stainless steel, ensuring superior strength, dimensional stability, and resistance to corrosion.

Reusable Design: Each mould is designed for multiple testing cycles with minimal maintenance.

Removable Sides: Moulds are equipped with quick-release panels or clamps, allowing the cured sample to be extracted easily without damage.

Dimensional Precision: Consistent wall thickness and smooth internal surfaces ensure uniform sample curing and accurate UCS test results.

The aranzu Reusable UCS Mould is ideal for laboratories and operations involved in:

• Mine Backfill Quality Control
• Cemented Paste Fill Testing
• Cement and Grout Mix Design Evaluation
• Research and Development for geotechnical and materials testing

It is widely used in mining and civil construction environments where consistent and accurate UCS testing of cemented materials is essential for process optimisation and safety verification.

Material Options:

• Polyurethane (PU) – for smaller diameter moulds
• Stainless Steel – for larger moulds (≥200 mm diameter)

Size Range: Multiple diameters and heights available to suit different sample volumes and mix types.

aranzu offers full customisation of the UCS mould range to match site-specific testing standards and operational needs, including:

• Custom diameters, heights, or volumes
• Engraved sample IDs
• Adaptation for specific curing and demoulding procedures

The UCS machine come with an integrated datalogger for data capturing and an automated hydraulic power pack, capable of applying a maximum load of 75 Tonnes. The load and displacement are measured and captured using the dedicated datalogger supplied with the unit. The data can then be downloaded onto a USB thumb drive or by using a computer (LAN connection) for data analysis.

The large UCS press is used to determine the unconfined compressive strength of large aggregate, backfill mixtures. This is important for quality control measures and backfill recipe design.

The Large UCS Test Press is sized for a maximum sample size of 300mm OD x 600mm high.

aranzu can supply larger or smaller UCS load frames on request.