Basic HTML Version
224
IBRACON Structures and Materials Journal • 2012 • vol. 5 • nº 2
Guidelines for the development of concrete performance-based specifications in Brazil
test method provides an evaluation of resistance to penetration
of chlorides with electrical conductance of material.
Each specification has a maximum acceptable total charge,
which usually lies between 1000 and 3000 Coulombs at 56
days or after the accelerated cure proposed by Ozyildirim [18].
Choosing the maximum total charge relies on the specifier’s
experience and not on some quantitative relationship with a
particular service life under a specific exposure condition. Nev-
ertheless, this might be a good quality control test.
n
Electrical resistivity
– Electrical resistivity in conjunction with
the oxygen access to the reinforcement are the main drivers of
electrochemical mechanism that leads to corrosion (Ferreira
Figure 2 – Diagram for the selection of performance-based requirements related to durability