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SLAKE DURABILITY APPARATUS AZA1005
AZA1005 Slake Durability Apparatus is a high-precision laboratory testing machine designed to determine the Slake Durability Index (SDI) of weak and weather-sensitive rocks. It simulates natural wetting and drying cycles to evaluate how rock specimens deteriorate over time when exposed to environmental conditions.
This apparatus is widely used in geotechnical engineering, mining, civil construction, and academic research to assess the long-term stability of rocks such as shale, mudstone, marl, and claystone.
Description
Key Features
• Evaluates slake durability index of weak rocks
• Twin stainless steel mesh drums for higher accuracy
• Conforms to ASTM D4644 and ISRM Suggested Methods
• Stainless steel water tank and corrosion-resistant structure
• Constant-speed geared motor with uniform rotation
• Digital timer for precise cycle control
• Suitable for geotechnical laboratories and universities
Working Principle
The test reproduces environmental weathering by rotating rock samples inside mesh drums immersed in water.
Test Cycle Process:
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Samples are oven dried and weighed (W₁)
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Placed in rotating mesh drums and immersed in water
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Drums rotate continuously for 10 minutes
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Samples are dried again and reweighed (W₂)
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The cycle is repeated twice
Slake Durability Index (SDI) Formula:
SDI = (W₂ / W₁) × 100
A higher SDI value indicates stronger resistance to weathering.
Applications
• Slope stability studies
• Tunnel and underground projects
• Dam and embankment safety analysis
• Highway and rock cut investigations
• Academic and research laboratories
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AZA1005 |
| Drum Type | Twin stainless steel mesh drums |
| Drum Diameter | 140 mm |
| Rotation Speed | 20 ± 2 RPM |
| Motor | 1/4 HP geared motor |
| Timer | Digital (up to 60 min) |
| Bath Tank | Stainless steel |
| Rock Types | Shale, Mudstone, Marl, Claystone |
| Standards | ASTM D4644, ISRM |
| Power Supply | 220V, 50Hz |
| Weight | Approx. 35 kg |
Frequently Asked Questions (FAQ)
Q1: What does AZA1005 measure?
It measures the Slake Durability Index of weak and weather-susceptible rocks.
Q2: How many samples can be tested simultaneously?
Two samples can be tested at the same time using twin drums.
Q3: Is it compliant with international standards?
Yes, it complies with ASTM D4644 and ISRM Suggested Methods.
Q4: Is the water tank included?
Yes, a stainless steel immersion tank is supplied with the unit.
Q5: Is the test fully automatic?
Rotation and timing are automatic; weighing of samples is manual.
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