Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopy
The C-S-H-phase is the most important strength generating phase in concrete and other cementitious materials. The analysis of C-S-H is therefore an important instrument of innovations in the field of concrete and its durability and sustainability. The quantification and insights in C-S-H are hindere...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2022-03-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8058 |
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| author | Frank Michael Schmidt-Döhl David Schulenberg Franziska Tralow Jürgen Neubauer Julian Johannes Wolf Dominique Ectors |
| author_facet | Frank Michael Schmidt-Döhl David Schulenberg Franziska Tralow Jürgen Neubauer Julian Johannes Wolf Dominique Ectors |
| author_sort | Frank Michael Schmidt-Döhl |
| collection | DOAJ |
| description | The C-S-H-phase is the most important strength generating phase in concrete and other cementitious materials. The analysis of C-S-H is therefore an important instrument of innovations in the field of concrete and its durability and sustainability. The quantification and insights in C-S-H are hindered by the predominantly amorphous structure of C-S-H. Only the time consuming and expensive solid state nuclear magnetic resonance spectroscopy (NMR) gives a chance to get results, but is restricted to model substances. A new technique, based on the cheap and widespread infrared-spectroscopy (IR) was developed. The quantitative analysis is based on the silicon content in the different structural units of C-S-H and a calibration with natural and synthetic materials with known silicon content in these units. The technique allows to investigate specimens from real structures. Specimens with quartz or limestone aggregate can be analyzed directly. In other cases the aggregates must be separated, for example with heavy liquid separation. Tests with different mortars showed a good correspondence of measured and expected values of C-S-H concentration. |
| format | Article |
| id | doaj-art-ba6c5ff07b7841d585b8f833db0158c4 |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2022-03-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-ba6c5ff07b7841d585b8f833db0158c42025-08-20T03:38:55ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822022-03-013353954510.14311/APP.2022.33.05395298Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopyFrank Michael Schmidt-Döhl0David Schulenberg1Franziska Tralow2Jürgen Neubauer3Julian Johannes Wolf4Dominique Ectors5Hamburg University of Technology, TUHH, Institute of Materials, Physics and Chemistry of Buildings, 21071 Hamburg, GermanyHamburg University of Technology, TUHH, Institute of Materials, Physics and Chemistry of Buildings, 21071 Hamburg, GermanyHamburg University of Technology, TUHH, Institute of Materials, Physics and Chemistry of Buildings, 21071 Hamburg, GermanyFriedrich-Alexander University Erlangen-Nürnberg, FAU, Geozentrum Nordbayern, Schlossgarten 5a, 91054 Erlangen, GermanyFriedrich-Alexander University Erlangen-Nürnberg, FAU, Geozentrum Nordbayern, Schlossgarten 5a, 91054 Erlangen, GermanyFriedrich-Alexander University Erlangen-Nürnberg, FAU, Geozentrum Nordbayern, Schlossgarten 5a, 91054 Erlangen, GermanyThe C-S-H-phase is the most important strength generating phase in concrete and other cementitious materials. The analysis of C-S-H is therefore an important instrument of innovations in the field of concrete and its durability and sustainability. The quantification and insights in C-S-H are hindered by the predominantly amorphous structure of C-S-H. Only the time consuming and expensive solid state nuclear magnetic resonance spectroscopy (NMR) gives a chance to get results, but is restricted to model substances. A new technique, based on the cheap and widespread infrared-spectroscopy (IR) was developed. The quantitative analysis is based on the silicon content in the different structural units of C-S-H and a calibration with natural and synthetic materials with known silicon content in these units. The technique allows to investigate specimens from real structures. Specimens with quartz or limestone aggregate can be analyzed directly. In other cases the aggregates must be separated, for example with heavy liquid separation. Tests with different mortars showed a good correspondence of measured and expected values of C-S-H concentration.https://ojs.cvut.cz/ojs/index.php/APP/article/view/8058calcium-silicate-hydrate (c-s-h)quantitative analysisspectroscopy |
| spellingShingle | Frank Michael Schmidt-Döhl David Schulenberg Franziska Tralow Jürgen Neubauer Julian Johannes Wolf Dominique Ectors Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopy Acta Polytechnica CTU Proceedings calcium-silicate-hydrate (c-s-h) quantitative analysis spectroscopy |
| title | Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopy |
| title_full | Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopy |
| title_fullStr | Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopy |
| title_full_unstemmed | Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopy |
| title_short | Quantitative analysis of the strength generating C-S-H-phase in concrete by IR-spectroscopy |
| title_sort | quantitative analysis of the strength generating c s h phase in concrete by ir spectroscopy |
| topic | calcium-silicate-hydrate (c-s-h) quantitative analysis spectroscopy |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8058 |
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