Sulphate corrosion of cement pastes with a high content of waste marble powder
The article focuses on sulphate corrosion of cement pastes with a high content of waste micronized marble powder. Micronized marble powder is used as a substitute for Portland cement CEM I 42.5R. The amount of micronized marble powder used is from 5 to 50 wt. %. The research also tested a reference...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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CTU Central Library
2022-03-01
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| Series: | Acta Polytechnica CTU Proceedings |
| Subjects: | |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8112 |
| _version_ | 1818027489347239936 |
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| author | Zdeněk Prošek Pavel Tesárek |
| author_facet | Zdeněk Prošek Pavel Tesárek |
| author_sort | Zdeněk Prošek |
| collection | DOAJ |
| description | The article focuses on sulphate corrosion of cement pastes with a high content of waste micronized marble powder. Micronized marble powder is used as a substitute for Portland cement CEM I 42.5R. The amount of micronized marble powder used is from 5 to 50 wt. %. The research also tested a reference mixture composed only of Portland cement. The used accelerated sulphate corrosion consists of cyclic saturation and drying with 10% Na2SO4 solution for 56 days. During sulphate corrosion, samples are placed in a controlled environment at 5 ± 1 ◦C and 85 % relative humidity to allow thaumasite to form. During cycling, samples were continuously visually monitored and documented. Subsequently, after 56 days, the samples were destructively tested for compressive strength. The research revealed a negative effect of micronized marble powder on the resistance to sulphate corrosion, where in contrast to the reference mixture the decrease in compressive strength is up to twofold. |
| first_indexed | 2024-12-10T04:48:43Z |
| format | Article |
| id | doaj.art-451040a1b95545698c8c453204a3933a |
| institution | Directory Open Access Journal |
| issn | 2336-5382 |
| language | English |
| last_indexed | 2024-12-10T04:48:43Z |
| publishDate | 2022-03-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj.art-451040a1b95545698c8c453204a3933a2022-12-22T02:01:41ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822022-03-013475–7975–7910.14311/APP.2022.34.00755352Sulphate corrosion of cement pastes with a high content of waste marble powderZdeněk Prošek0Pavel Tesárek1Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech Republic; Czech Technical University in Pragu, University Centre for Energy Efficient Buildings, Třinecká 1024, 273 43 Buštěhrad, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague 6, Czech RepublicThe article focuses on sulphate corrosion of cement pastes with a high content of waste micronized marble powder. Micronized marble powder is used as a substitute for Portland cement CEM I 42.5R. The amount of micronized marble powder used is from 5 to 50 wt. %. The research also tested a reference mixture composed only of Portland cement. The used accelerated sulphate corrosion consists of cyclic saturation and drying with 10% Na2SO4 solution for 56 days. During sulphate corrosion, samples are placed in a controlled environment at 5 ± 1 ◦C and 85 % relative humidity to allow thaumasite to form. During cycling, samples were continuously visually monitored and documented. Subsequently, after 56 days, the samples were destructively tested for compressive strength. The research revealed a negative effect of micronized marble powder on the resistance to sulphate corrosion, where in contrast to the reference mixture the decrease in compressive strength is up to twofold.https://ojs.cvut.cz/ojs/index.php/APP/article/view/8112sulphate corrosionthaumasitecement pastesvisual inspectioncompressive strength |
| spellingShingle | Zdeněk Prošek Pavel Tesárek Sulphate corrosion of cement pastes with a high content of waste marble powder Acta Polytechnica CTU Proceedings sulphate corrosion thaumasite cement pastes visual inspection compressive strength |
| title | Sulphate corrosion of cement pastes with a high content of waste marble powder |
| title_full | Sulphate corrosion of cement pastes with a high content of waste marble powder |
| title_fullStr | Sulphate corrosion of cement pastes with a high content of waste marble powder |
| title_full_unstemmed | Sulphate corrosion of cement pastes with a high content of waste marble powder |
| title_short | Sulphate corrosion of cement pastes with a high content of waste marble powder |
| title_sort | sulphate corrosion of cement pastes with a high content of waste marble powder |
| topic | sulphate corrosion thaumasite cement pastes visual inspection compressive strength |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8112 |
| work_keys_str_mv | AT zdenekprosek sulphatecorrosionofcementpasteswithahighcontentofwastemarblepowder AT paveltesarek sulphatecorrosionofcementpasteswithahighcontentofwastemarblepowder |