Details
| Translated title of the contribution | Acid resistance testing of concrete - Development of a rapid testing method |
|---|---|
| Original language | German |
| Pages (from-to) | 490-499 |
| Number of pages | 10 |
| Journal | Beton- und Stahlbetonbau |
| Volume | 119 |
| Issue number | 7 |
| Early online date | 3 Jun 2024 |
| Publication status | Published - 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
- Engineering(all)
- Building and Construction
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In: Beton- und Stahlbetonbau, Vol. 119, No. 7, 07.2024, p. 490-499.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Prüfung des Säurewiderstands von Beton - Entwicklung eines Schnellprüfverfahrens
AU - Mahlbacher, Markus
AU - Gerlach, Jesko
AU - Pott, Jens Uwe
AU - Haist, Michael
AU - Lohaus, Ludger
N1 - Publisher Copyright: © 2024 Ernst & Sohn GmbH.
PY - 2024/7
Y1 - 2024/7
N2 - 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.
AB - 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.
KW - acid attack
KW - acid test methods
KW - concrete durability
KW - product monitoring
KW - production control
KW - rapid test methods
UR - http://www.scopus.com/inward/record.url?scp=85195222803&partnerID=8YFLogxK
U2 - 10.1002/best.202400015
DO - 10.1002/best.202400015
M3 - Artikel
AN - SCOPUS:85195222803
VL - 119
SP - 490
EP - 499
JO - Beton- und Stahlbetonbau
JF - Beton- und Stahlbetonbau
SN - 0005-9900
IS - 7
ER -