On the normal moments distributions and its characterizations

Olosunde, A. A.

doi:10.20454/ijas.2017.1176

Cited by 1 publication

(1 citation statement)

References 2 publications

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“…The Kolmogorov–Smirnov test and the χ 2 test were applied in the present study. These are efficient tests, widely used in the literature . The nonparametric Kolmogorov–Smirnov test is based on the maximum distance

D_{N}

between the expected cumulative distribution function

F_{X}

and the observed one

F_{O}

.…”

Section: Results and Analysismentioning

confidence: 99%

Quantification of Tafel coefficients according to passive/active state of steel carbonation‐induced corrosion in concrete

Duprat

Larrard

2019

Materials & Corrosion

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Statistical quantification of Tafel coefficients is investigated in this study for isolated steel rebar embedded in concrete. The survey is supported by a wide experimental campaign carried out earlier to characterize the passive and active states of carbonation‐induced corrosion of steel. Electrochemical measurements (polarization resistance, corrosion potential, Tafel coefficients) and gravimetric estimations of iron loss were regularly conducted over 417 days on 108 concrete specimens. The statistical analysis reveals that the mean value of Tafel coefficients, both cathodic and anodic, is higher under active corrosion, which seems to contradict the general tendency found for chloride‐induced corrosion, while their coefficient of variation is smaller. The statistical inference was based on the first step of distributions fitting the experimental data and then on the second step of goodness‐of‐fit tests. The most suitable of the distributions proposed were the Burr, Rayleigh, and Gamma distributions. A similar analysis was made for the corrosion potential and polarization resistance. The findings of the study will be valuable for probabilistic approaches to corrosion where probabilistic distributions are required.

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