Comparison between granulometric analysis of the sand from the acre river and normal sand from the Tietê river

Resumo

The emergence of the main cities of the Amazon, including the State of Acre, occurred on the banks of rivers. In the region, the sand used in the buildings has always been, and continues to be, until today, removed directly from the river beds, from the dredging process, without any control, of both the places of withdrawal and the places of sand deposits, let alone with the quality of the sand.

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