Alfa-Test Los Angeles Abrasion Tester AG-191

• Used for testing of coarse aggregates, with a maximum size smaller than 37.5 mm (1-½”), for resistance to degradation. It is considered as an indicator of the relative quality or competence of various sources of aggregate having similar mineral compositions.
• A combination of actions including abrasion or attrition, impact, and grinding in a rotating steel drum containing a specified number of steel spheres along with the test specimen.
• Consists of a hollow steel cylinder, with a wall thickness of 12 mm (1/2”) closed at both ends having an inside diameter of 711 mm (28”), and an inside length of 508 mm (20”).
• The drum rotates at 31 – 33 rpm.
• Supplied with an automatic digital counter that shows the number of  revolutions for the drum.
• Supplied less with abrasive charges (should be ordered srparately)

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