OEM Rock Core Slake Durability Test Apparatus Supplier, Quotes

This rock Slake Durability Test is a laboratory device used to determine the resistance of rocks, especially soft or weathered rocks, to disintegration under dry wet cycling conditions. It is designed to simulate the fragmentation process of rocks in natural environments caused by water absorption loss cycles

It is suitable for the ability of rock samples with loose texture, weathered rock, clay rock, etc. to resist softening and disintegration after two standard cycles of drying and wetting. The resistance to disintegration index is the ratio of the residual mass of the specimen after wet dry cycles to the original mass, expressed as a percentage.

Product Description

Product Description

Working Principle: Accelerate the process of rock disintegration through periodic soaking (simulating water absorption expansion) and rotary drying (simulating thermal expansion, contraction, and mechanical erosion). Measure the quality loss or particle distribution after each cycle to evaluate the durability of the rock.

Testing Standards: Common standards: ASTM D4644 (American Society for Testing and Materials), ISRM Recommended Methods, SL/T 264-2020 (China Water Industry Standard), etc.

Key Parameters: Usually test 2-10 cycles and record the disintegration rate (%) = (initial mass - remaining mass) / initial mass x 100%.

Slake Durability Apparatus Detail

Application Area

Slake Durability Application

Geotechnical Engineering: Evaluating the long-term stability of slopes and tunnel surrounding rocks.

Geological Research: Analyze the rate and mechanism of rock weathering.

Building Materials: Test the durability of stone materials, such as shale, mudstone, and other easily disintegrating rocks.

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Technical Parameters

Rate & Motor Power 0.75 kW | 20 r/min
The Tester Structure Composed of the power plant, cylindrical sieve cylinder, and tank
Sink Level Cylindrical sieve cylinder water level: 20 mm
Product Name Slake Durability Apparatus
Cylinder Diameter Φ140mm
Sample Requirement Total of 10 pieces, each 40-60g, polished round using grinding disc or sandpaper
Power Supply 380V 50Hz
Dimensions 800 × 250 × 600mm
Weight 100kg

Frequently Asked Questions

What is the primary function of the Slake Durability Apparatus?
It is designed to evaluate the resistance of rock samples to weakening and disintegration when subjected to simulated weathering cycles of wetting and drying.
Which international standards does this equipment follow?
The apparatus complies with ASTM D4644 and ISRM (International Society for Rock Mechanics) recommended methods for testing slake durability of shales and similar weak rocks.
How are the rock samples prepared for testing?
Ten representative rock fragments, each weighing between 40g and 60g, should be selected and rounded using a grinding disc or sandpaper before the test.
What is the standard rotation speed for the sieve cylinders?
The motor drives the cylindrical sieves at a constant speed of 20 revolutions per minute (r/min).
How is the slake durability index calculated?
The index is calculated by taking the ratio of the final oven-dried mass of the rock retained in the drum to the initial oven-dried mass, expressed as a percentage.
Is the water level in the tank adjustable?
The standard water level should be maintained at 20 mm below the drum axis to ensure proper periodic soaking of the samples during rotation.

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