Durability of concrete: ability to resist weathering action, chemical ...

Permeability
• Permeability - the property that governs the rate
of flow of a fluid into a porous solid.
• Darcy’s law: For steady-state flow, the
coefficient of permeability, K, is determined from
Darcy's expression:
dq/dt = K∙(∆H∙A)/(L∙μ)
Where: Dq/dt = rate of fluid flow, μ = viscosity of
the fluid, ∆H = pressure gradient, A = surface
area, and L = thickness of the solid.
CE 60
Instructor: Paulo Monteiro