ASTM C 131, C 535
AASHTO T-96
The L. A. Abrasion Machine is used as a quality
control tool for aggregates, including crushed rock, gravel and
slag. The testing
method determines the degradation when subjected to abrasion,
attrition, impact and grinding. The sample is placed in the drum
along with a hardened steel abrasive charge. After rotating the
drum a specific number of times, samples are removed and examined
for wear.
Durham Geo offers two models; a basic model and an enclosed model.
Both machines are constructed from structural steel with a welded
1/2 in (1.27 cm) thick drum wall. The drum is fitted with a removable
shelf in accordance with ASTM "preferred design" recommendations.
Rotation is provided by an electric motor with speed reduction
and enclosed chain drive to allow the drum to turn at 30-33 rpm.
The enclosed model is a new design that meets OSHA
sound and mechanical safety requirements. An interlock prevents
operation unless the
double hinged lid is closed.
Both models, (C-658 and C-660) come with a 25 kg abrasive charge
and a heavy duty catch pan.
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C-658 |
L.A. Abrasion Machine, 115 V, 60 Hz |
C-65815 |
L.A. Abrasion Machine, 230 V, 50 Hz |
C-660 |
Enclosed L.A. Abrasion Machine, 230 V, 60 Hz 1phase |
C-66015 |
Enclosed L.A. Abrasion Machine, 230 V, 50 Hz 1 phase |
C-66020 |
Abrasion Charge, set of 12 |
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