THE EFFECT OF SUPERPLASTICIZERS ON THE PROPERTIES OF GAMMA IRRADIATED CEMENT PASTES
Considering the safety criteria on radioactive waste disposal, all materials within the repositories usually have to meet very strict requirements. Low and intermediate level waste can be immobilised in cement composites for its well-proven properties, however there are gaps in the knowledge relatin...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2018-08-01
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| Series: | Ceramics-Silikáty |
| Subjects: | |
| Online Access: |
http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1224
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| _version_ | 1811270342256099328 |
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| author | Jaroslava Kotatkova Zbynek Hlavac Rosnecky Vit Mohyla Roman Jansa Jindrich |
| author_facet | Jaroslava Kotatkova Zbynek Hlavac Rosnecky Vit Mohyla Roman Jansa Jindrich |
| author_sort | Jaroslava Kotatkova |
| collection | DOAJ |
| description | Considering the safety criteria on radioactive waste disposal, all materials within the repositories usually have to meet very strict requirements. Low and intermediate level waste can be immobilised in cement composites for its well-proven properties, however there are gaps in the knowledge relating to the interaction of organic species, such as superplasticizers, with the cement paste and the irradiation stability of the final composite. The presented work studies the effects of gamma irradiation on the mechanical properties of cement pastes incorporating high amounts of two kinds of superplasticizers. In addition to this, temperature development due to the irradiation inside the pastes was studied in order to recognise potential temperature gradients. The obtained results showed insignificant changes of bulk density and scatter in values obtained by non-destructive methods. Destructive testing, however, revealed a positive effect of the irradiation on both the flexural and compressive strength of the studied pastes. The overall temperature changes were within 2°C, having no significant effects on the properties of the pastes |
| first_indexed | 2024-04-12T21:59:25Z |
| format | Article |
| id | doaj.art-fa6ebd0e5a754e8c9dea191127966f65 |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-04-12T21:59:25Z |
| publishDate | 2018-08-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-fa6ebd0e5a754e8c9dea191127966f652022-12-22T03:15:11ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472018-08-0162330631010.13168/cs.2018.002610.13168/cs.2018.0026.20180827073321THE EFFECT OF SUPERPLASTICIZERS ON THE PROPERTIES OF GAMMA IRRADIATED CEMENT PASTESJaroslava Kotatkova0Zbynek Hlavac1Rosnecky Vit2Mohyla Roman3Jansa Jindrich4 Research Centre Rez, Hlavni 130, 250 68, Husinec-Rez, Czech Republic Research Centre Rez, Hlavni 130, 250 68, Husinec-Rez, Czech Republic Research Centre Rez, Hlavni 130, 250 68, Husinec-Rez, Czech Republic Research Centre Rez, Hlavni 130, 250 68, Husinec-Rez, Czech Republic Research Centre Rez, Hlavni 130, 250 68, Husinec-Rez, Czech Republic Considering the safety criteria on radioactive waste disposal, all materials within the repositories usually have to meet very strict requirements. Low and intermediate level waste can be immobilised in cement composites for its well-proven properties, however there are gaps in the knowledge relating to the interaction of organic species, such as superplasticizers, with the cement paste and the irradiation stability of the final composite. The presented work studies the effects of gamma irradiation on the mechanical properties of cement pastes incorporating high amounts of two kinds of superplasticizers. In addition to this, temperature development due to the irradiation inside the pastes was studied in order to recognise potential temperature gradients. The obtained results showed insignificant changes of bulk density and scatter in values obtained by non-destructive methods. Destructive testing, however, revealed a positive effect of the irradiation on both the flexural and compressive strength of the studied pastes. The overall temperature changes were within 2°C, having no significant effects on the properties of the pastes http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1224 Superplasticizer Irradiated cement paste Mechanical properties Temperatures |
| spellingShingle | Jaroslava Kotatkova Zbynek Hlavac Rosnecky Vit Mohyla Roman Jansa Jindrich THE EFFECT OF SUPERPLASTICIZERS ON THE PROPERTIES OF GAMMA IRRADIATED CEMENT PASTES Ceramics-Silikáty Superplasticizer Irradiated cement paste Mechanical properties Temperatures |
| title | THE EFFECT OF SUPERPLASTICIZERS ON THE PROPERTIES OF GAMMA IRRADIATED CEMENT PASTES |
| title_full | THE EFFECT OF SUPERPLASTICIZERS ON THE PROPERTIES OF GAMMA IRRADIATED CEMENT PASTES |
| title_fullStr | THE EFFECT OF SUPERPLASTICIZERS ON THE PROPERTIES OF GAMMA IRRADIATED CEMENT PASTES |
| title_full_unstemmed | THE EFFECT OF SUPERPLASTICIZERS ON THE PROPERTIES OF GAMMA IRRADIATED CEMENT PASTES |
| title_short | THE EFFECT OF SUPERPLASTICIZERS ON THE PROPERTIES OF GAMMA IRRADIATED CEMENT PASTES |
| title_sort | effect of superplasticizers on the properties of gamma irradiated cement pastes |
| topic | Superplasticizer Irradiated cement paste Mechanical properties Temperatures |
| url |
http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1224
|
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