Experimental study of abrasion on pebbles
DOI:
https://doi.org/10.32685/0120-1425/bolgeol8.1-3.1960.389Keywords:
Alteration, rotary barrel, wear, hardness, sphericity, transport
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Abstract
The loading of streams is affected by two very distinct processes, namely: a) abrasion and alteration due to chemical agents during transport, including breaking up or fragmentation of the pebbles in route, and b) sorting action or selective transport. Since it is almost impossible to determine by direct observation of the material transported by water currents, which is the decrease in size due to one or the other of these processes, the sediment researcher must separate each of them in the laboratory, where they can be studied independently using experiments.
For this purpose, rotating barrels have been used to study abrasion. In this apparatus, the load is subjected to wear while retaining its identity during the experiment.
This thesis is concerned with fragments of size between 4 and 6 mm in diameter (pebble range) and is an attempt to observe the effects of abrasion as it relates to size, sphericity, and roundness.
References
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