Calcium Extraction from Blast-Furnace-Slag-Based Mortars in Sulphate Bacterial Medium
Wastewater structures, such as treatment plants or sewers can be easily affected by bio-corrosion influenced by microorganisms living in waste water. The activity of these microbes results in deterioration and can cause the reduction in structural performance of such structures. In order to improve...
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doaj-36c87843fd92492c911da8a77198b5562020-11-25T00:14:36ZengMDPI AGBuildings2075-53092018-01-0181910.3390/buildings8010009buildings8010009Calcium Extraction from Blast-Furnace-Slag-Based Mortars in Sulphate Bacterial MediumAdriana Estokova0Michaela Smolakova1Alena Luptakova2Institute of Environmental Engineering, Faculty of Civil Engineering, Technical University of Kosice, 042 00 Kosice, SlovakiaInstitute of Environmental Engineering, Faculty of Civil Engineering, Technical University of Kosice, 042 00 Kosice, SlovakiaInstitute of Geotechnics, Slovak Academy of Science, 040 01 Kosice, SlovakiaWastewater structures, such as treatment plants or sewers can be easily affected by bio-corrosion influenced by microorganisms living in waste water. The activity of these microbes results in deterioration and can cause the reduction in structural performance of such structures. In order to improve the durability of mortar and concrete, different admixtures are being used and the best impact is observed in cement based materials combined with blast furnace slag. In this study, mortar samples with blast furnace slag were exposed to bacterial sulphate attack for 90 and 180 days. The leaching of calcium ions from the cement matrix and equivalent damaged depths of studied mortar samples were evaluated. The results showed more significant leaching of samples placed in bacterial environment, compared to the samples placed in non-bacterial environment. Similarly, the equivalent damaged depths of mortars were much higher for the bacteria-influenced samples. The slag-based cement mortars did not clearly show improved resistance in bacterial medium in terms of calcium leaching.http://www.mdpi.com/2075-5309/8/1/9calcium leachingbio-deteriorationmicrobiological corrosioncement mortarsblast furnace slag |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Adriana Estokova Michaela Smolakova Alena Luptakova |
spellingShingle |
Adriana Estokova Michaela Smolakova Alena Luptakova Calcium Extraction from Blast-Furnace-Slag-Based Mortars in Sulphate Bacterial Medium Buildings calcium leaching bio-deterioration microbiological corrosion cement mortars blast furnace slag |
author_facet |
Adriana Estokova Michaela Smolakova Alena Luptakova |
author_sort |
Adriana Estokova |
title |
Calcium Extraction from Blast-Furnace-Slag-Based Mortars in Sulphate Bacterial Medium |
title_short |
Calcium Extraction from Blast-Furnace-Slag-Based Mortars in Sulphate Bacterial Medium |
title_full |
Calcium Extraction from Blast-Furnace-Slag-Based Mortars in Sulphate Bacterial Medium |
title_fullStr |
Calcium Extraction from Blast-Furnace-Slag-Based Mortars in Sulphate Bacterial Medium |
title_full_unstemmed |
Calcium Extraction from Blast-Furnace-Slag-Based Mortars in Sulphate Bacterial Medium |
title_sort |
calcium extraction from blast-furnace-slag-based mortars in sulphate bacterial medium |
publisher |
MDPI AG |
series |
Buildings |
issn |
2075-5309 |
publishDate |
2018-01-01 |
description |
Wastewater structures, such as treatment plants or sewers can be easily affected by bio-corrosion influenced by microorganisms living in waste water. The activity of these microbes results in deterioration and can cause the reduction in structural performance of such structures. In order to improve the durability of mortar and concrete, different admixtures are being used and the best impact is observed in cement based materials combined with blast furnace slag. In this study, mortar samples with blast furnace slag were exposed to bacterial sulphate attack for 90 and 180 days. The leaching of calcium ions from the cement matrix and equivalent damaged depths of studied mortar samples were evaluated. The results showed more significant leaching of samples placed in bacterial environment, compared to the samples placed in non-bacterial environment. Similarly, the equivalent damaged depths of mortars were much higher for the bacteria-influenced samples. The slag-based cement mortars did not clearly show improved resistance in bacterial medium in terms of calcium leaching. |
topic |
calcium leaching bio-deterioration microbiological corrosion cement mortars blast furnace slag |
url |
http://www.mdpi.com/2075-5309/8/1/9 |
work_keys_str_mv |
AT adrianaestokova calciumextractionfromblastfurnaceslagbasedmortarsinsulphatebacterialmedium AT michaelasmolakova calciumextractionfromblastfurnaceslagbasedmortarsinsulphatebacterialmedium AT alenaluptakova calciumextractionfromblastfurnaceslagbasedmortarsinsulphatebacterialmedium |
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1725389624672518144 |