Flow of wet natural pozzolana

MEDICI, M.E.; BENEGAS, O.A.; AGUIRRE, F.; BAUDINO, M.R.; UÑAC, R.O.; VIDALES, A M; IPPOLITO, I.

Journal of Physics: Conference Series

IOP Publishing

Año: 2009 vol. 166 p. 1 - 9

1742-6588

We present experimental results on the flow and stability conditions for natural pozzolana, a natural volcanic sand widely used in concrete production. We measured different angles involved in equilibrium conditions for sand piles and relate them to the flux parameters necessary to produce a silo evacuation. We vary some of the geometrical parameters in the silo to inspect the different flux responses of the system. Results are showed as a function of humidity present in the system. In this way, we related critical angles with flux conditions through a silo under different geometric setups and different humidity degrees, thus setting up a basic phase diagram for flux.