Potentiometric method for assessing the pozzolatic activity of highly dispersed materials
ABSTRACT: Introduction. Pozzolatic activity is an important indicator for highly dispersed materials, particularly clay soils. It determines their effective use and characterizes the ability of the active components in their composition to interact with calcium hydroxide. Various methods are employe...
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ftdoajarticles:oai:doaj.org/article:13d30d2175804658babf84965c9f08ca 2023-10-09T21:49:38+02:00 Potentiometric method for assessing the pozzolatic activity of highly dispersed materials Yulia V. Sokolova Arkady M. Ayzenshtadt Maria A. Frolova Anna A. Shinkaruk Tatyana A. Makhova 2023-08-01T00:00:00Z https://doi.org/10.15828/2075-8545-2023-15-4-349-358 https://doaj.org/article/13d30d2175804658babf84965c9f08ca EN RU eng rus OOO "CNT «NanoStroitelstvo» https://nanobuild.ru/en_EN/journal/Nanobuild-4-2023/349-358.pdf https://doaj.org/toc/2075-8545 doi:10.15828/2075-8545-2023-15-4-349-358 2075-8545 https://doaj.org/article/13d30d2175804658babf84965c9f08ca Нанотехнологии в строительстве, Vol 15, Iss 4, Pp 349-358 (2023) potentiometric method sorption capacity coefficient of hydraulic activity pozzolatic activity sorption capacity of calcium ions highly dispersed material clay soil active mineral additive soil-concrete Building construction TH1-9745 article 2023 ftdoajarticles https://doi.org/10.15828/2075-8545-2023-15-4-349-358 2023-09-17T00:39:37Z ABSTRACT: Introduction. Pozzolatic activity is an important indicator for highly dispersed materials, particularly clay soils. It determines their effective use and characterizes the ability of the active components in their composition to interact with calcium hydroxide. Various methods are employed to assess this pozzolatic activity. Potentiometric methods are effective. They are based on measuring the electrode potential, which is functionally related to the change in the concentration (activity) of calcium ions in the analyzed solutions as the main information parameter of the pozzolatic reaction. The purpose of the research is to test the potentiometric method to assess the pozzolatic activity of highly dispersed materials, as well as the application of suggested approach to determine the rational amount of an active mineral lime-containing additive as a binder component for producing soil-concrete. Materials and Methods. We have chosen clay soil models with different plasticity index and sandy loam of the Arkhangelsk region as the objects. The potentiometric analysis method involved sequentially adding 0.015 mol/l calcium hydroxide solution, in amounts ranging from 0.2 to 0.8 ml, to a suspension containing 0.5 g of soil in 80 ml of distilled water. The potential of the system was measured while continuously stirring at a fixed speed. Results and Discussion. All studied objects are characterized by the pozzolatic activity, which increases in the series sandy loam sandy → clay loam light silty → clay light silty ≈ sandy loam silty and has the order of absolute values coinciding with the literature data. The rational amount of the active mineral lime-containing additive was 1–2% for clay soil models, depending on the plasticity index, and more than 2 % for the sandy loam of the Arkhangelsk region (from the soil mass on dried basis). Conclusion. We have shown the applicability of the potentiometric method of analysis using a calcium-selective electrode to assess the pozzolatic activity of highly dispersed ... Article in Journal/Newspaper Arkhangelsk Directory of Open Access Journals: DOAJ Articles Nanotechnologies in Construction A Scientific Internet-Journal 15 4 349 358 |
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English Russian |
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potentiometric method sorption capacity coefficient of hydraulic activity pozzolatic activity sorption capacity of calcium ions highly dispersed material clay soil active mineral additive soil-concrete Building construction TH1-9745 |
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potentiometric method sorption capacity coefficient of hydraulic activity pozzolatic activity sorption capacity of calcium ions highly dispersed material clay soil active mineral additive soil-concrete Building construction TH1-9745 Yulia V. Sokolova Arkady M. Ayzenshtadt Maria A. Frolova Anna A. Shinkaruk Tatyana A. Makhova Potentiometric method for assessing the pozzolatic activity of highly dispersed materials |
topic_facet |
potentiometric method sorption capacity coefficient of hydraulic activity pozzolatic activity sorption capacity of calcium ions highly dispersed material clay soil active mineral additive soil-concrete Building construction TH1-9745 |
description |
ABSTRACT: Introduction. Pozzolatic activity is an important indicator for highly dispersed materials, particularly clay soils. It determines their effective use and characterizes the ability of the active components in their composition to interact with calcium hydroxide. Various methods are employed to assess this pozzolatic activity. Potentiometric methods are effective. They are based on measuring the electrode potential, which is functionally related to the change in the concentration (activity) of calcium ions in the analyzed solutions as the main information parameter of the pozzolatic reaction. The purpose of the research is to test the potentiometric method to assess the pozzolatic activity of highly dispersed materials, as well as the application of suggested approach to determine the rational amount of an active mineral lime-containing additive as a binder component for producing soil-concrete. Materials and Methods. We have chosen clay soil models with different plasticity index and sandy loam of the Arkhangelsk region as the objects. The potentiometric analysis method involved sequentially adding 0.015 mol/l calcium hydroxide solution, in amounts ranging from 0.2 to 0.8 ml, to a suspension containing 0.5 g of soil in 80 ml of distilled water. The potential of the system was measured while continuously stirring at a fixed speed. Results and Discussion. All studied objects are characterized by the pozzolatic activity, which increases in the series sandy loam sandy → clay loam light silty → clay light silty ≈ sandy loam silty and has the order of absolute values coinciding with the literature data. The rational amount of the active mineral lime-containing additive was 1–2% for clay soil models, depending on the plasticity index, and more than 2 % for the sandy loam of the Arkhangelsk region (from the soil mass on dried basis). Conclusion. We have shown the applicability of the potentiometric method of analysis using a calcium-selective electrode to assess the pozzolatic activity of highly dispersed ... |
format |
Article in Journal/Newspaper |
author |
Yulia V. Sokolova Arkady M. Ayzenshtadt Maria A. Frolova Anna A. Shinkaruk Tatyana A. Makhova |
author_facet |
Yulia V. Sokolova Arkady M. Ayzenshtadt Maria A. Frolova Anna A. Shinkaruk Tatyana A. Makhova |
author_sort |
Yulia V. Sokolova |
title |
Potentiometric method for assessing the pozzolatic activity of highly dispersed materials |
title_short |
Potentiometric method for assessing the pozzolatic activity of highly dispersed materials |
title_full |
Potentiometric method for assessing the pozzolatic activity of highly dispersed materials |
title_fullStr |
Potentiometric method for assessing the pozzolatic activity of highly dispersed materials |
title_full_unstemmed |
Potentiometric method for assessing the pozzolatic activity of highly dispersed materials |
title_sort |
potentiometric method for assessing the pozzolatic activity of highly dispersed materials |
publisher |
OOO "CNT «NanoStroitelstvo» |
publishDate |
2023 |
url |
https://doi.org/10.15828/2075-8545-2023-15-4-349-358 https://doaj.org/article/13d30d2175804658babf84965c9f08ca |
genre |
Arkhangelsk |
genre_facet |
Arkhangelsk |
op_source |
Нанотехнологии в строительстве, Vol 15, Iss 4, Pp 349-358 (2023) |
op_relation |
https://nanobuild.ru/en_EN/journal/Nanobuild-4-2023/349-358.pdf https://doaj.org/toc/2075-8545 doi:10.15828/2075-8545-2023-15-4-349-358 2075-8545 https://doaj.org/article/13d30d2175804658babf84965c9f08ca |
op_doi |
https://doi.org/10.15828/2075-8545-2023-15-4-349-358 |
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Nanotechnologies in Construction A Scientific Internet-Journal |
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