The diverse range of aggregates available to the engineer makes it essential to select a material that is adequate for a given application. The following equipment is designed to determine various mechanical characteristics that need to be known in order to select the most suitable type of aggregate.

Open the Aggregate Crushing Value (ACV) and Ten Percent Fines Value (TFV) page

These tests are a measure of the crushing properties of aggregate and use the same basic equipment. The ACV test requires a standard load of 400 kN to be applied over a period of 10 minutes while the TFV test measures the force required to produce a specified depth of plunger penetration.

Model No. Desc
42-4300 150 mm Aggregate Crushing Value Apparatus
42-4500 75 mm Aggregate Crushing Value Apparatus
42-4580 Tamping Rod

Open the Aggregate Impact Value (AIV) page

The apparatus has been designed in a particularly heavy duty form, with specially hardened steel surfaces for minimum wear. The assembly is heavily plated to ensure corrosion resistance and forms a rigid frame around the quick-release trigger mechanism which ensures an effective free fall of the hammer when released. A built-in counter automatically indicates the number of blows delivered. The apparatus is supplied complete with cylindrical measure 75 mm diameter x 50 mm deep, and a steel tamping rod 16 mm diameter x 600 mm long.

Model No. Desc
42-4005 Aggregate Impact Value Apparatus

Open the Los Angeles Abrasion Machine page

• European and ASTM methods
• Revolution counter
• Safety cut-out
• Full width cover

The Los Angeles Machine comprises a heavy steel cylinder, rotated about its horizontal axis. The cylinder incorporates a removable internal shelf, as specified in the ASTM and EN test methods. The steel cylinder is manufactured from structural steel plate conforming to S275 of EN 10025:1993.

The filling aperture is provided with a cover and a safety stop button is prominently positioned. The machine is fitted with a revolution counter and steel tray for specimen unloading. Supplied without abrasive charges which should be ordered separately.

Model No. Desc
42-5305/10 12 EN Abrasive Charges
42-5310/01 Los Angeles Abrasion Machine with CE Safety Cabinet 220 - 240 V 50Hz
42-5310/06 Los Angeles Abrasion Machine with CE Safety Cabinet W/ Microswitches. 220-240V 60Hz 1Ph.
42-5315/01 Los Angeles Abrasion Machine 220- 240 V AC 50Hz
42-5315/06 -
42-5300/10 12 ASTM Abrasive Charges

Open the Skid Resistance Testing page

The Pendulum Skid Resistance Tester was originally designed in the 1940s in the USA, and further developed in the 1960s at the TRL (Transport Research Laboratory) for the testing of road surfaces.

The device measures the frictional resistance between a rubber slider mounted on the end of a pendulum arm and the surface to be tested. This provides road engineers with a method of checking the resistance of wet and dry surfaces to slipping and skidding, both in the lab and insitu.

It operates by a pendulum rotating about a spindle which is attached to a vertical pillar. At the end of the tubular arm a head of known mass is fitted with a rubber slider. The pendulum is released from a horizontal position so that it strikes the sample surface at a constant speed. The distance travelled by the head after hitting the sample is determined by the friction of the sample surface. 

Model No. Desc
42-6000/12 3.00” Rubber Mounted TRL (55) Slider
42-6000/13 3.00” Rubber Mounted Four S (96) Slider
42-6200 Base Plate for Skid Resistance Tester for lab testing
42-6000/11 1.25” Rubber Mounted PSV Slider
42-6000/14 3.00” Rubber Mounted CEN Slider
42-6000/10 Set of 3 Spreader Feet for Skid Resistance Tester for in-situ testing
42-6000 Pendulum Skid Resistance Tester