Prüfung des Säurewiderstands von Beton - Entwicklung eines Schnellprüfverfahrens

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Markus Mahlbacher
  • Jesko Gerlach
  • Jens Uwe Pott
  • Michael Haist
  • Ludger Lohaus

External Research Organisations

  • Holcim (Deutschland) GmbH
  • BAU-ZERT e.V.
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Details

Translated title of the contributionAcid resistance testing of concrete - Development of a rapid testing method
Original languageGerman
Pages (from-to)490-499
Number of pages10
JournalBeton- und Stahlbetonbau
Volume119
Issue number7
Early online date3 Jun 2024
Publication statusPublished - Jul 2024

Abstract

Acid resistance testing of concrete – development of a rapid testing method. In many applications in agriculture, industry and waste water systems, concrete damage caused by acid attack is the decisive damage mechanism for durability. First, the cement paste on the concrete surface is decomposed by dissolving attack before a diffusion-inhibiting covering layer forms between the surface and the attack zone. Hereafter, the damaging process progresses diffusion controlled and the damage zone advances into the concrete interior. Finally, progressive surface concrete erosion occurs which becomes decisive for the development of damage. In order to predict durability, it is essential to reliably record all three types of damage-stages, including their interactions, as part of performance tests. However, this means that long test times of several months are inevitable, thus no meaningful chemical acid resistance tests for quality control are available. However, if the erosion behaviour for a specific concrete composition is known through performance tests, the test duration can be significantly reduced, e.g. for production control. This article presents such a suitable rapid test method for characterizing the acid resistance of concrete, which detects the early damage stages of acid attack quickly and cost-effectively. The comparability and reproducibility of the test results are demonstrated and the application limits and possibilities are discussed.

ASJC Scopus subject areas

Cite this

Prüfung des Säurewiderstands von Beton - Entwicklung eines Schnellprüfverfahrens. / Mahlbacher, Markus; Gerlach, Jesko; Pott, Jens Uwe et al.
In: Beton- und Stahlbetonbau, Vol. 119, No. 7, 07.2024, p. 490-499.

Research output: Contribution to journalArticleResearchpeer review

Mahlbacher M, Gerlach J, Pott JU, Haist M, Lohaus L. Prüfung des Säurewiderstands von Beton - Entwicklung eines Schnellprüfverfahrens. Beton- und Stahlbetonbau. 2024 Jul;119(7):490-499. Epub 2024 Jun 3. doi: 10.1002/best.202400015
Mahlbacher, Markus ; Gerlach, Jesko ; Pott, Jens Uwe et al. / Prüfung des Säurewiderstands von Beton - Entwicklung eines Schnellprüfverfahrens. In: Beton- und Stahlbetonbau. 2024 ; Vol. 119, No. 7. pp. 490-499.
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