PSI - Issue 11

Gibson R. Meira et al. / Procedia Structural Integrity 11 (2018) 122–129

125

4

Meira et al./

Structural Integr

ity Procedia 00

(2018) 000–000

satu cell and elec C pote whi incr

rated calcium s were the onl ost of result uncertain ris tronegative o omparing th ntial (CSE) r ch showed re easing pH. ith regards TC with the s

hydroxide s y ones to be c s show that th k of corrosio ver time until e results sol esults more e verse results to the corrosi ame solutions

olution show arbonated. e initial read n for the gal it reaches the ution per sol lectronegativ , that is, the on current de studied.

ed to be with ings (during t vanized and stabilization ution, data d e with increas corrosion po nsity, Figures

in the criteri he first test d non-galvaniz . emonstrate t ing pH. This tentials (CSE 5 to 8 show

a to confirm ays) of the co ed bars. How hat the galva did not happe ) presented l results of thi

the passivati rrosion poten ever, these r nized bars p n with the no ess electrone s electrochem

on condition, tial indicate a esults becom resented corr n-galvanized gative results ical paramet

their high e less osion bars, with er for

M

W

the

Fig. 1

. Evolution of the

corrosion poten

tial for TC with s

aturated calcium

hydroxide solut

ion (Ca(OH)2) ov

er time.

solution (Ca(OH

F ig. 2. Evolution

of the corrosion

potential for TC

with saturated ca hydroxi

lcium hydroxide de (KOH).

)2) over time. + 0

.15M of potassi

um