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3 Cards in this Set

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N=Vv/Vt


e=Vv/Vs=n/(1-n)

n porosidade


Vv volume de vazios


Vt volume total


e índice de vazios

ne=nt-ns


ns retenção específica


Então ne=Ve/Vt*100


ne volume de água livre ou porosidade eficaz

Conceito de porosidade eficaz

Fase sólida: material rocha


Vazios: poros, espaços de dissolução, microfraturas e descontinuidades preenchidas com ar e água

Maciços rochosos