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Steel corrosion in concrete -- how does it occur?

D A Hausmann
- 01 Nov 1967 - 
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TLDR
In this article, the authors designed a questionnaire to determine if a predicated threshold for the occurrence of corrosion of a piece of steel is real and whether a threshold exists.
Abstract
THE TESTS DESCRIBED IN THIS PAPER WERE DESIGNED TO: IDENTIFY THE MECHANISM BY WHICH CORROSION OF STEEL IS INITIATED, PROVIDE QUANITATIVE INFORMATION ABOUT THE EFFECTS OF CHLORIDES, AND DETERMINE IF A PREDICTABLE THRESHOLD OF CORROSION EXISTS LABORATORY STUDIES ARE REPORTED ON THE CORROSION OF BARE STEEL RODS IN ENVIRONMENTS SIMULATING POROUS CONCRETE CONTAMINATED WITH CHLORIDES THE INITIATION OF CORROSION IS SHOWN TO REQUIRE FREE OXYGEN AT THE STEEL SURFACE AND A RATIO OF CHLORIDE TO HYDROXYL ION ACTIVITY OF AT LEAST 06 A PROBABILITY MODEL IS USED TO EXPLAIN THE CHLORIDE EFFECT AND TO PREDICT THE THRESHOLD VALUE CAUSING CORROSION /AUTHOR/

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Book ChapterDOI

Corrosion of steel in concrete: new challenges

TL;DR: In this paper, the authors presented the fundamentals of durability of reinforced concrete structures and showed how the use of new sensors and measuring setups can contribute to the understanding of the carbonation mechanism and the corrosion rate of steel in carbonated concrete.
Dissertation

Étude multiphysique du transfert de chlorures dans les bétons insaturés : prédiction de l’initiation de la corrosion des aciers

TL;DR: In this paper, a caracterisation experimentale du phenomene de double couche electrique (DCE) and its influence on the influence of transfert ionique and hygrothermique on the degradation of facade maritime buildings is presented.
Dissertation

Corrosion of steel in alkali-activated materials

TL;DR: In this paper, the pore solution of steel reinforced concretes was used to predict the onset of pitting, interlinking chloride concentration and the solubility of the passive film.
Dissertation

Influence of cement composition on concrete durability in chloride-sulfate environments

TL;DR: In this article, the effect of other ions, particularly sulfates, on reinforcement corrosion has not been adequately studied, while no study has been conducted to evaluate the effect that cement alkalinity has on the mechanism of reinforcement corrosion.

An alternative potentiometric method for determining chloride content in concrete samples from reinforced-concrete bridges.

G G Clemena, +1 more
TL;DR: In this article, the Nernst equation is used to calculate the potential readings before and after spikes of cold-digested solutions of concrete samples, and the chloride content of each sample is calculated by an equation based on the potential reading.
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