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Utest Material Testing Equipment

Slake Durability Apparatus

Product Code

UTR-0800            Slake Durability Apparatus, 220-240 V 50 Hz
UTR-0802            Pair of Mesh Drums for UTR-0800


ASTM D4644

This test method has been developed to assess the deterioration of rocks over a period of time when subjected to water immersion.

Slake durability is a simulated weathering test to determine abrasion resistance during wetting and drying cycles of shale and similar soft rocks as used in embankments and other construction-related applications. Samples are alternately tumbled in mesh drums through a water medium and oven-dried for two cycles. The percent loss of mass is referred to as the slake durability index.

The UTR-0800 Slake Durability Apparatus consists of a motorized drive unit which is mounted on a baseplate and which can rotate two or four drums at a speed of 20 r.p.m. The tank assemblies are filled with water to a level 20 mm below the drum axis. The test drums are manufactured from 2.00 mm mesh, 140 mm dia. x 100 mm long.


1300x150x450 mm

Weigth (approx.)

15 kg