AZA 1008 HOEK TRIAXIAL

Description

Hoek triaxial testing equipment is engineered for precision rock testing under simulated underground pressure conditions. It plays a vital role in determining the mechanical behavior of rock samples in response to confining pressures, enabling engineers and geologists to design safer structures such as tunnels, slopes, dams, and underground mines.

The Hoek triaxial cell consists of a stainless steel pressure vessel that houses a cylindrical rock specimen encased in a rubber membrane. Confining fluid is introduced around the sample to simulate hydrostatic pressure, and an axial load is applied vertically using a loading frame. This setup replicates the three-dimensional stress conditions rocks experience in natural environments. The equipment facilitates measurement of peak compressive strength, deformation characteristics, and moduli of elasticity.

This model supports a range of rock core sizes, most commonly 38 mm (NX), 50 mm, and 54 mm, making it highly adaptable for multiple testing needs. The robust chamber is designed to handle confining pressures up to 60 MPa or more. Precision-engineered stainless steel construction ensures longevity and accurate alignment during testing.

Designed for compatibility with ASTM D7012 and ISRM standards, the Hoek triaxial apparatus is an essential component in any laboratory conducting advanced rock mechanics testing. Whether for basic geotechnical investigations or high-stakes mining operations, the data generated by this system supports risk assessment, design optimization, and failure prediction.

The system integrates with both manual and servo-controlled compression testing machines. It also supports data acquisition through strain gauges, LVDTs, and digital load indicators, allowing for real-time recording and graphing of load-displacement curves. The cell can be used with lubricated pistons to reduce friction and enhance accuracy, especially when measuring elastic properties.

In academic environments, the Hoek triaxial system is used for training and research, offering a hands-on tool to understand rock deformation, fracture mechanisms, and strength parameters under multi-axial loading. In commercial settings, it’s relied upon for critical design inputs in infrastructure and resource extraction.

The unit is supplied with essential accessories including loading caps, rubber membranes, sealing rings, drainage ports, and pressure connections. Optional upgrades include pore pressure transducers, hydraulic intensifiers, and computer-integrated systems for automated control and analysis.

 Specifications:

FAQ:

Q1: What is a Hoek triaxial cell used for?
It is used to simulate in-situ stress conditions and measure the strength and deformation properties of rock cores.

Q2: What pressure levels can it withstand?
This unit supports confining pressures up to 60 MPa or more, depending on the model.

Q3: What rock core sizes does it support?
Standard sizes include 38 mm (NX), with optional adapters for 50 mm and 54 mm samples.

Q4: Is this cell compatible with digital testing systems?
Yes. It works with digital compression machines and DAQ systems for automated testing and data recording.

Q5: What standards does it follow?
The system is compliant with ASTM D7012 and ISRM-recommended rock mechanics protocols.