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Geopolymer, Calcium Aluminate, and Portland Cement-Based Mortars: Comparing Degradation Using Acetic Acid

Ukrainczyk, Neven ; Muthu, Murugan ; Vogt, Oliver ; Koenders, Eddie (2024)
Geopolymer, Calcium Aluminate, and Portland Cement-Based Mortars: Comparing Degradation Using Acetic Acid.
In: Materials, 2019, 12 (19)
doi: 10.26083/tuprints-00016237
Article, Secondary publication, Publisher's Version

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Abstract

In this paper, we comparitvley studied acetic acid attacks on geopolymer (GP-M), calcium aluminate (CAC-M), and Portland cement (PC-M)-based mortars. Consequent formations of deteriorated or transition layers surrounding the unaltered core material was classified in these three mortars, according to different degradation levels depending on what binder type was involved. Apart from mass loss, hardness, and deterioration depth, their microstructural alterations were analyzed using test methods such as scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS), mercury intrusion porosimetry (MIP), powder X-ray diffraction (XRD), and thermogravimetric analysis-differential scanning calorimeter (TGA-DSC), which showed the different mechanisms for each binder type. Elemental maps revealed the decalcification (PC-M and CAC-M) and depolymerization (GP-M) that occurred across the mortar sections. The mass loss, hardness, and porosity were the least affected for GP-M, followed by CAC-M. These results points out that geopolymer-based mortars have improved acid resistance, which can be used as a potential alternative to conventional cement concretes that have been exposed to agro-industrial environments.

Item Type: Article
Erschienen: 2024
Creators: Ukrainczyk, Neven ; Muthu, Murugan ; Vogt, Oliver ; Koenders, Eddie
Type of entry: Secondary publication
Title: Geopolymer, Calcium Aluminate, and Portland Cement-Based Mortars: Comparing Degradation Using Acetic Acid
Language: English
Date: 16 January 2024
Place of Publication: Darmstadt
Year of primary publication: 2019
Place of primary publication: Basel
Publisher: MDPI
Journal or Publication Title: Materials
Volume of the journal: 12
Issue Number: 19
Collation: 12 Seiten
DOI: 10.26083/tuprints-00016237
URL / URN: https://tuprints.ulb.tu-darmstadt.de/16237
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

In this paper, we comparitvley studied acetic acid attacks on geopolymer (GP-M), calcium aluminate (CAC-M), and Portland cement (PC-M)-based mortars. Consequent formations of deteriorated or transition layers surrounding the unaltered core material was classified in these three mortars, according to different degradation levels depending on what binder type was involved. Apart from mass loss, hardness, and deterioration depth, their microstructural alterations were analyzed using test methods such as scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS), mercury intrusion porosimetry (MIP), powder X-ray diffraction (XRD), and thermogravimetric analysis-differential scanning calorimeter (TGA-DSC), which showed the different mechanisms for each binder type. Elemental maps revealed the decalcification (PC-M and CAC-M) and depolymerization (GP-M) that occurred across the mortar sections. The mass loss, hardness, and porosity were the least affected for GP-M, followed by CAC-M. These results points out that geopolymer-based mortars have improved acid resistance, which can be used as a potential alternative to conventional cement concretes that have been exposed to agro-industrial environments.

Uncontrolled Keywords: geopolymer, Portland cement, calcium aluminate cement, leaching, microstructure, deterioration, acetic acid attack, SEM-EDS
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-162378
Additional Information:

This article belongs to the Section Construction and Building Materials

Classification DDC: 600 Technology, medicine, applied sciences > 624 Civil engineering and environmental protection engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute of Construction and Building Materials
Date Deposited: 16 Jan 2024 12:13
Last Modified: 17 Jan 2024 14:50
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