Micro-Deval Apparatus, 120V 60Hz

Micro-Deval Apparatus, 120V 60Hz

Product Options

 
Part Number & Name
Price QTY
H-3875
Micro-Deval Apparatus, 120V 60Hz
$4,897.00
H-3875.5F
Micro-Deval, 230V 50Hz
$5,100.00
H-3876
Micro-Deval, 120V 60Hz, Thermally-Protected Motor
Discontinued
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Micro-Deval Apparatus, 120V 60Hz

Supports the following standards: ASTM D6928, ASTM D7428, AASHTO T327, TEXAS 845-49-40, ONTARIO LS-618

The Micro-Deval test measures 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 5,000g of 9.5mm diameter stainless steel balls and water, then rotated at 100rpm for two hours. Aggregate quality is determined by percentage loss in gradation results at completion. Smaller equipment size, lower sample quantities and a simpler procedure make the method easier and less costly to perform than traditional methods. The H-3875 Micro-Deval meets current ASTM, AASHTO, and Canadian test methods, as well as more stringent Texas DOT requirements.

The micro-deval test measures 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 5,000g of 9.5mm diameter stainless steel balls and water, then rotated at 100rpm for two hours. Aggregate quality is determined by percentage loss in gradation results at completion. The micro-deval’s smaller size, smaller sample quantities and simpler procedure make this test method easier and less costly to perform than traditional methods.

The micro-deval meets current ASTM, AASHTO, and Canadian test methods, as well as more stringent Texas DOT requirements. This contemporary version of the micro-deval test should not be confused with older versions originating in Europe which use different equipment and test protocol. A sophisticated electronic controller with optical sensing system accurately tracks test time, total revolutions and rpm of jars. Test duration may be controlled by either elapsed time or total revolutions. Jars stop within a fraction of one revolution at test termination. Jar revolution and speed data may also be used as a verification of machine performance.

Sample jars revolve behind polycarbonate doors equipped with safety interlocks, so no moving parts are exposed during operation as opposed to older designs, which used unguarded open rollers. The micro-deval machine is a two-tier unit with sturdy steel frame. Each tier carries one stainless steel 5 liter sample jar, which has a 194mm ID and a 170mm internal height with locking cover. Power to the rubber-covered rollers is supplied by a 3/4hp, electric motor through a gear transmission and chain drive. The unit is supplied with two jars and two 5,500g abrasive charges. A magnet is included to assist in removing the abrasive charge after the test is complete. For additional sample preparation capacity and greatly reduced testing times, it is recommended that additional sample jars and abrasive charges be used.
Overall dimensions are: 20.5" x 13.5" x 38" (521 x 343 x 965mm).

Accessories

 
Part Number & Name
Price QTY
H-3875.1
Micro-Deval 5L Jar
$662.00
H-3875.2
Micro-Deval Abrasive Charge
$126.00
H-3875.3
Micro-Deval Abrasive Charge Magnet
Call
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Standards

Standards

ASTM D6928

ASTM D7428

AASHTO T327

TEXAS 845-49-40

ONTARIO LS-618

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