The Matest Micro-Deval apparatus – a Micro-Deval machine for aggregate testing – determines the abrasion resistance and durability of mineral aggregates according to ASTM D6928, ASTM D7428 and AASHTO T237. The sample is placed in a sealed stainless steel jar with up to 5000 g of 9.5 mm steel balls and water, then rotated at 100 rpm for 2 hours: the percentage loss at the end of the test shows the aggregate quality.
The machine has a sophisticated electronic controller with dedicated sensors to precisely track test time, total revolutions and rpm of jars; total revolutions are used to control test duration and jars stop within a fraction of one revolution at test termination.
Sample jars revolve protected by a polycarbonate door foreseen of safety interlocks. No moving parts are exposed to the user during test. A verification of machine performance may be given by both jar revolution and speed data.
The Micro-Deval is constituted of a sturdy steel frame which can receive 2 stainless jars together.
The jars are made of stainless steel with diameter and height according to standards (diameter within 194 and 202 mm and height within 170 and 177 mm) and are complete with cover and locking device.
Experience precise and efficient motor control with our advanced system, combining an inverter with fully integrated PLC technology. The user-friendly HMI interface, equipped with intuitive buttons, ensures seamless operation. The electrically powered, thermally protected motor drives the rubber-coated rollers via a mechanical transmission, smoothly moving the jars with reliability and precision.
The unit comes with 2 jars and 2 sets of abrasive charges, 5500 g.
After test completion, the worker can easily remove the abrasive charge thanks to the assistance of a magnet.
Power supply: 110V 60Hz
Dimensions: 570x420x1220 mm
Weight: 120 kg approx.
Other models, including a version with safety cabinet, are available in the Micro-Deval machines range.