Matest catalogue 2018

SECTION A | AGGREGATES - ROCKS
49
A078
MICRO-DEVAL APPARATUS
NEW
STANDARDS: ASTM D6928, D7428 | AASHTO T237 | TEXAS 845-49-40 | ONTARIO LS-618
Used to determine the abrasion resistance and durability of mineral aggregates.
An aggregate sample is placed in a sealed stainless steel jar with an abrasive charge of up to 5000g of 9.5 mm diameter stainless steel balls
and water, then rotated at 100 rpm for 2 hours. Percentage loss in gradation results at completion determines 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.
An electric thermally protected motor, thanks to a mechanical transmission, supplies power to the rubber-covered rollers which move the jars.
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: 230V 1ph 50Hz 750W
(Available in 110V 60Hz with reference code: A078Y)
Dimensions: 570x340x1000 mm
Weight: 110 kg approx.
Closed
A078-01
Open
A078-02
SPARES
A078-01 Jar with cover and locking stirrup, 5L
A078-02 Abrasive charges, 5500 g
A078-03 Magnet to remove abrasive charges
A078