Skip to Main content Skip to Navigation
Theses

Outils de caractérisation et analyse du comportement des matériaux cimentaires soumis à des cycles de gel-dégel en présence de sels

Abstract : A concrete submitted to freeze-thaw cycles may undergo damages generally identified under two forms. On one hand, the internal frost affects the whole volume of the concrete. It can resul in generalized microcracks into the ciment paste. The sensibility of a common concrete to this deterioration can be decreased by the presence of a network of air bubbles within the ciment paste. On the other hand, the scaling, is a surface deterioration generaly quantified by the loss of mass from the exposed surface. The scaling is strongly influenced by the presence of a solution and its concentration in salts (generally some sodium chloride), over the exposed concrete surface. When a common concrete is not correctly formulated to resist this environment, its degradation can penalize the exploitation of the concerned structure in expected conditions of services. Laboratory tests exposing bodies of concrete to accelerated freeze-thaws cycles, allow to estimate the concrete resistance when exposed to these two kinds of deteriorations. The scientific community agrees on the internal frost laboratory test and on the protective aspect of a network of air bubbles. But the scaling is still approached by experimental procedures which do not make consensus and have little evolved since the middle of the 1990s (...)
Document type :
Theses
Complete list of metadatas

Cited literature [81 references]  Display  Hide  Download

https://pastel.archives-ouvertes.fr/pastel-00872934
Contributor : Abes Star :  Contact
Submitted on : Monday, October 14, 2013 - 4:43:10 PM
Last modification on : Friday, July 17, 2020 - 5:09:10 PM
Long-term archiving on: : Wednesday, January 15, 2014 - 8:35:53 AM

File

TH2013PEST1024_complete.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : pastel-00872934, version 1

Citation

Sébastien Bouteille. Outils de caractérisation et analyse du comportement des matériaux cimentaires soumis à des cycles de gel-dégel en présence de sels. Autre. Université Paris-Est, 2013. Français. ⟨NNT : 2013PEST1024⟩. ⟨pastel-00872934⟩

Share

Metrics

Record views

733

Files downloads

5819