Concrete corrosion in an Austrian sewer system

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung

Abstract

This study comprises the application of a multi proxy approach, where a strongly deteriorated Austrian sewer system was intensively investigated. Understanding the underlying reaction mechanisms leading to the deterioration by microbial induced sulfuric acid attack on concrete structures is highly complex and often not fully understood. The aim of this study is to contribute to a deeper understanding by introducing a novel approach that comprises a range of mineralogical methods, as well as hydro-geochemical analyses, analyses of gases, hydro-geochemical modelling, and microbiological analyses. Results revealed an extremely fast propagating Microbial Induced Concrete Corrosion (MICC), with corrosion rates of up to 1 cm/y. Expressed pore fluids contained sulfate concentrations of up to 104 g/l at low pH of between 0.7 and 3.1. Sulfuric acid produced triggered the dissolution of the cementitious matrix and the carbonatic additives, as well as massive formations of gypsum, anhydrite and bassanite. Microprobe analyses revealed sequences of element distributions within the corrosion fronts, controlled by the suggested pH gradient of 13 to

Originalspracheenglisch
TitelProceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2015
Herausgeber (Verlag)CRC Press/Balkema
Seiten5
Seitenumfang1
ISBN (Print)9781138028432
PublikationsstatusVeröffentlicht - 2016
Veranstaltung4th International Conference on Concrete Repair, Rehabilitation and Retrofitting - Leipzig, Deutschland
Dauer: 5 Okt 20157 Okt 2015

Konferenz

Konferenz4th International Conference on Concrete Repair, Rehabilitation and Retrofitting
KurztitelICCRRR 2015
LandDeutschland
OrtLeipzig
Zeitraum5/10/157/10/15

Fingerprint

Sewers
Sulfuric acid
Concretes
Corrosion
Gypsum
Corrosion rate
Concrete construction
Deterioration
Dissolution
Fluids
Gases
Sulfates

ASJC Scopus subject areas

  • !!Building and Construction
  • !!Civil and Structural Engineering

Dies zitieren

Grengg, C., Baldermann, A., Dietzel, M., Mittermayr, F., Böttcher, M. E., & Leis, A. (2016). Concrete corrosion in an Austrian sewer system. in Proceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2015 (S. 5). CRC Press/Balkema.

Concrete corrosion in an Austrian sewer system. / Grengg, C.; Baldermann, A.; Dietzel, M.; Mittermayr, F.; Böttcher, M. E.; Leis, A.

Proceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2015. CRC Press/Balkema, 2016. S. 5.

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung

Grengg, C, Baldermann, A, Dietzel, M, Mittermayr, F, Böttcher, ME & Leis, A 2016, Concrete corrosion in an Austrian sewer system. in Proceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2015. CRC Press/Balkema, S. 5, 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting, Leipzig, Deutschland, 5/10/15.
Grengg C, Baldermann A, Dietzel M, Mittermayr F, Böttcher ME, Leis A. Concrete corrosion in an Austrian sewer system. in Proceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2015. CRC Press/Balkema. 2016. S. 5
Grengg, C. ; Baldermann, A. ; Dietzel, M. ; Mittermayr, F. ; Böttcher, M. E. ; Leis, A. / Concrete corrosion in an Austrian sewer system. Proceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2015. CRC Press/Balkema, 2016. S. 5
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