• Brazilian Test Apparatus is designed to test specimens from 50 mm dia to 100 mm dia having thickness equal to half of the diameter for determination of Indirect Tensile Strength of rocks.
• The specimen is held in circular jaws; this is primarily similar to a compression Machine and consists of a small load frame having sturdy base with two vertical threaded rods and an adjustable cross head. The hydraulic jack is fitted at the centre of the base of the load frame. The jack of the load frame is self-retracting and two plain platens are supplied.
• A pressure gauge capacity is 0-100 x 1 kN is fixed at the base of jack.
• A maximum pointer is also provided on the gauge, a pair of semicircular platens for Ø50mm samples also provided. The other Pair of jaws should be ordered separately.

Loading Frame or Testing Machine

• High-capacity frame to apply compressive load.
• Compatible with universal testing machines (UTMs).
• Typically has a capacity of 100–500 kN or more.

Platen System

• Upper and lower platens designed to apply a line load across the diameter of a cylindrical sample.
• Sometimes includes curved jaws or steel strips to ensure even load distribution and prevent stress concentrations.

Specimen Support

• Designed to hold cylindrical specimens (commonly 38 mm to 100 mm diameter, length = diameter).
• Rigid, non-deforming support to maintain alignment.

Load Application and Control

• Controlled loading rate, typically 0.5–1.0 MPa/min.
• Load applied vertically through platens at the specimen’s diametrical plane.

• IS:10082-1982

• The instrument is useful for testing specimen from 50mm dia to 100mm and of thickness of half the diameter. This is to test for indirect measurement of tensile strength of rocks.
• The specimen is held in circular jaws; this is primarily similar to a compression machine and consists of a small load frame having sturdy base with two vertical threaded rods and an adjustable cross head.
• The hydraulic jack is fitted at the centre of the base of the load frame.
• The jack of the load frame is self-retracting and two plain platens are supplied.
• A pressure gauge capacity 0-100 kn x 1 kn is fixed at the base of jack.
• A maximum pointer is also provided on the gauge, a pair of semi-circular platens for 50mm dia samples also provided. The instrument can be used in field also.

Pair of jaws for samples dia available, at Additional Cost:-

• 60 mm
• 70 mm
• 80 mm
• 90 mm
• 100 mm