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Article | REF: C6200 V2

Reinforced concrete pathologies - Physico-chemical actions, specific cases and works

Author: Jean DELEFOSSE

Publication date: November 10, 2013 | Lire en français

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    Overview

    ABSTRACT

    Apart from design, calculation, drawing and execution errors, physico-chemical actions can play a major role in the pathology of reinforced concrete. Among them, shrinkage, temperature variations and thermal stress are responsible for about half of such disorders, which can induce cracking and steel corrosion. Creep and thus deformations that increase over time are also a major cause of accidents. More specific works are the subject of quasi-recurrent pathologies such as reservoirs, casings and prefabricated constructions; the latter nonetheless present comparatively low pathologies. In conclusion, the technology of concrete cannot be improvised and requires a specific study which must be conducted by specialized engineering offices.

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    AUTHOR

    • Jean DELEFOSSE: Ingénieur E.T.P. – Graduate of the Centre des hautes études de la construction – European engineer – Former lecturer at the Ecole spéciale des Travaux publics - Expert before the Paris Court of Appeal and the Paris and Versailles Administrative Courts of Appeal (Honorary)

     INTRODUCTION

    This study, devoted to the pathologies affecting reinforced concrete structures, concludes with an examination of the physico-chemical actions of a few special cases and the pathologies affecting certain specific structures (reservoirs, casings, etc.).

    We have already examined those whose origin can be traced back to :

    • design and calculation errors [C 6 100] ;

    • drawing errors and workmanship [C 6 150] .

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    KEYWORDS

    risk   |   materials   |   building   |   Construction Industrie   |   reinforced concrete   |   resistance to corrosion   |   physico-chemical pathologies

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