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BRAZILIAN TEST APPARATUS AZA1004
AZA1004 Brazilian Test Apparatus is a precision-engineered device used to determine the indirect tensile strength of cylindrical rock samples using the standardized Brazilian (splitting tensile) test method. This apparatus is widely trusted in geotechnical engineering, mining, civil engineering, and academic research for evaluating rock behavior under tensile stress.
Built with a heavy-duty steel frame and plated loading jaws, AZA1004 ensures uniform load distribution and highly repeatable testing results in both laboratory and field environments.
Description
Key Features
• Determines indirect tensile strength of rock cores and discs
• Fully compliant with ASTM D3967 and ISRM Suggested Methods
• Heavy-duty steel frame for high load stability
• Hardened, plated steel loading jaws
• High-precision load transfer system
• Compatible with manual or hydraulic loading systems
• Suitable for lab and on-site testing
• Compact and portable construction
Working Principle
The test applies diametral compressive force on a cylindrical rock disc.
Although compression is applied, the rock fails due to tensile stress along the loaded plane.
Tensile Strength Formula:
T = 2P / (Ï€DL)
Where:
P = Maximum applied load
D = Specimen diameter
L = Specimen thickness
Applications
• Rock mechanics testing
• Tunnel and underground stability analysis
• Mining and quarry site evaluation
• Geotechnical investigations
• Academic and research laboratories
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AZA1004 |
| Test Method | Brazilian / Splitting Tensile Test |
| Specimen Diameter | 50–100 mm |
| Specimen Thickness | 25–50 mm |
| Load Capacity | Up to 200 kN |
| Loading Method | Manual screw or hydraulic system |
| Frame Material | Heavy-duty mild steel |
| Loading Jaws | Hardened plated steel |
| Standards | ASTM D3967, ISRM |
| Weight | Approx. 45–60 kg |
Frequently Asked Questions (FAQ)
Q1: What does AZA1004 measure?
It measures the indirect tensile strength of cylindrical rock samples.
Q2: Does it match international standards?
Yes, it complies with ASTM D3967 and ISRM Suggested Methods.
Q3: Can it be used in the field?
Yes, its compact and robust design allows both lab and on-site use.
Q4: What kind of specimens can be tested?
Rock discs typically 50–100 mm diameter and 25–50 mm thickness.
Q5: Is it compatible with universal testing machines?
Yes, it can be mounted on UTM and hydraulic compression machines.
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