Los Angeles Abrasion Machine

Tests for resistance to abrasion in crushed rock, slag, crushed and uncrushed gravel, using Los Angeles testing method. Features welded structural steel frame, fabricated 1/2"-thick (913mm) abrasion-resistant steel drum, removable shelf bolted to drum and balanced drum assembly for easy rotation by hand. Enclosed chain drive rotates drum without conventional slip clutch. Positive drive delivers greater accuracy. Self-contained worm-drive motorized speed reducer has anti-friction bearings and sealed lubrication. Motor is 1HP (746W), equipped with magnetic push-button control and automatic overload cutout. Includes revolution counter, material catch pan and 1 abrasion charge consisting of 12 hardened-steel balls. Dimen.: 39" x 29" x 37" (991 x 737 x 940mm). Meets ASTM C131, C535; AASHTO T96. Shipping wt. 1060 lbs. (485kg)

Manual: H-3860_Los_Angeles_Abrasion_Machine.pdf

Slake Durability Apparatus

The Slake Durability Apparatus is used to determine the durability of rocks and the probable amount of deterioration of weak rocks, over a period of time, after simulated exposure to nature's continual wetting and drying cycles. The apparatus consists of a base-mounted motor drive unit with two mesh drums and two water tanks with quick-release drive assemblies. The drums rotate at a speed of 20 revolutions per minute. Options include two extra drums and tanks for running up to four tests simultaneously. Conforms to ASTM D4644 standard.

Falling Sand Abrasion Tester

The Falling sand test determines the abrasion resistance of coatings, such as paint, varnish, lacquer and related products. The test panel is enclosed in a receptacle with a window. Ottawa natural silica sand is considered the standard use in this test because of its known characteristics. Order H-3820 Ottawa silica test sand separately. Meets ASTM D333, D968, D1395, D2205. Shipping wt. 110 lbs. (49.9kg)

Ottawa Silica Sand

Specially graded, natural Ottawa silica sand will pass a No. 20 (850µ) sieve and be retained on a No. 30 (600µ) sieve. Specific gravity is 2.65. Packed in 50 lb. (22.7kg) bags. Meets ASTM C778. Shipping wt. 50 lbs. (22.7kg)

Sound Enclosure For LA Abrasion

Full enclosure designed to cut down on noise generated will using the LA Abrasion Machine. Unit is Steel Construction with Foam Lining for noise reduction. Shipping wt. 305 lbs. (138kg)

Micro-Deval Apparatus, 120V

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 Complies with current ASTM, AASHTO and Canadian standards, as well as the more stringent Texas DOT requirements. The H-3875 Micro-Deval Apparatus is a second generation, state-of-the-art machine. 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.
The jars revolve behind closed Lexan™ doors with safety interlocks. Other manufacturers use separate timers to control test duration, which does not permit tracking of jar revolutions or speed and allows variations up to ±6% of the optimum number of revolutions. In addition, other machines spin the jars on unguarded open rollers, creating a potentially hazardous situation.
The Micro-Deval machine is a two-tier unit with sturdy steel frame. Each tier carries one stainless steel 5L jar, 194mm ID, 170mm internal height with locking cover. Power to the rubber-covered rollers is supplied by a 3/4hp, 115V/60Hz 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. Overall Dimensions: 20.5 x 13.5 x 38" (521 x 343 x 965mm). Shipping wt. 110 lbs. (107kg)

Micro-Deval 5L Jar

For additional sample preparation capacity and greatly reduced testing times, order additional Jars.

Micro-Deval Abrasive Charge

For additional sample preparation capacity and greatly reduced testing times, order additional Abrasive Charges.

Slake Durability Apparatus, 220V 50Hz

The Slake Durability Apparatus is used to determine the durability of rocks and the probable amount of deterioration of weak rocks, over a period of time, after simulated exposure to nature's continual wetting and drying cycles. The apparatus consists of a base-mounted motor drive unit with two mesh drums and two water tanks with quick-release drive assemblies. The drums rotate at a speed of 20 revolutions per minute. Options include two extra drums and tanks for running up to four tests simultaneously. Complies with ASTM D4644 standard. Shipping wt. 70 lbs. (32kg)