INFLUENCE OF NATURAL ZEOLITE ON PORTLAND CEMENT HYDRATION PROCESSES AND PROPERTIES OF HARDENED CEMENT PASTE
The application of natural zeolite clinoptilolite (Si/Al = 5.8) for substituting up to 20 vol% of the cement (in mortars) was studied. The effect of the natural zeolite on the consistency and compressive strength at 7, 28 and 90 days was tested at different dosages of clinoptilolite in the mixture....
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2021-10-01
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| Series: | Ceramics-Silikáty |
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| Online Access: |
http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1413
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| _version_ | 1797676966893060096 |
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| author | Dalius Kriptavicius Giedrius Girskas Skripkiunas Gintautas |
| author_facet | Dalius Kriptavicius Giedrius Girskas Skripkiunas Gintautas |
| author_sort | Dalius Kriptavicius |
| collection | DOAJ |
| description | The application of natural zeolite clinoptilolite (Si/Al = 5.8) for substituting up to 20 vol% of the cement (in mortars) was studied. The effect of the natural zeolite on the consistency and compressive strength at 7, 28 and 90 days was tested at different dosages of clinoptilolite in the mixture. The optimal content (15 % by volume) of the active mineral addition was selected according to the achieved strength results of the mixture and the effect of natural zeolite on the early and late cement hydration was studied. The results of Chapelle test for pozzolanic activity, the initial and final setting times of the paste, thermogravimetric analysis and X-ray diffraction analysis of hardened cement paste showed that natural zeolite clinoptilolite accelerates early and late hydration of cement. No significant differences in calcium hydroxide (CH) content between the specimens modified with clinoptilolite and the specimens containing only ordinary Portland cement (OPC) were observed, despite the high pozzolanic activity of the zeolite. |
| first_indexed | 2024-03-11T22:38:05Z |
| format | Article |
| id | doaj.art-8a8d34fa7a3c4652ba7b3f7b47ed70a5 |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-03-11T22:38:05Z |
| publishDate | 2021-10-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-8a8d34fa7a3c4652ba7b3f7b47ed70a52023-09-22T10:58:13ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472021-10-0165324725410.13168/cs.2021.002510.13168/cs.2021.0025.20230922105742INFLUENCE OF NATURAL ZEOLITE ON PORTLAND CEMENT HYDRATION PROCESSES AND PROPERTIES OF HARDENED CEMENT PASTEDalius Kriptavicius0Giedrius Girskas1Skripkiunas Gintautas2 Institute of Building Materials, Vilnius Gediminas Technical University, Sauletekio av. 11, Vilnius, LT-10223, Lithuania Institute of Building Materials, Vilnius Gediminas Technical University, Sauletekio av. 11, Vilnius, LT-10223, Lithuania Institute of Building Materials, Vilnius Gediminas Technical University, Sauletekio av. 11, Vilnius, LT-10223, Lithuania The application of natural zeolite clinoptilolite (Si/Al = 5.8) for substituting up to 20 vol% of the cement (in mortars) was studied. The effect of the natural zeolite on the consistency and compressive strength at 7, 28 and 90 days was tested at different dosages of clinoptilolite in the mixture. The optimal content (15 % by volume) of the active mineral addition was selected according to the achieved strength results of the mixture and the effect of natural zeolite on the early and late cement hydration was studied. The results of Chapelle test for pozzolanic activity, the initial and final setting times of the paste, thermogravimetric analysis and X-ray diffraction analysis of hardened cement paste showed that natural zeolite clinoptilolite accelerates early and late hydration of cement. No significant differences in calcium hydroxide (CH) content between the specimens modified with clinoptilolite and the specimens containing only ordinary Portland cement (OPC) were observed, despite the high pozzolanic activity of the zeolite. http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1413 clinoptilolite aluminosilicate pozzolanic activity setting time mortar flow strength |
| spellingShingle | Dalius Kriptavicius Giedrius Girskas Skripkiunas Gintautas INFLUENCE OF NATURAL ZEOLITE ON PORTLAND CEMENT HYDRATION PROCESSES AND PROPERTIES OF HARDENED CEMENT PASTE Ceramics-Silikáty clinoptilolite aluminosilicate pozzolanic activity setting time mortar flow strength |
| title | INFLUENCE OF NATURAL ZEOLITE ON PORTLAND CEMENT HYDRATION PROCESSES AND PROPERTIES OF HARDENED CEMENT PASTE |
| title_full | INFLUENCE OF NATURAL ZEOLITE ON PORTLAND CEMENT HYDRATION PROCESSES AND PROPERTIES OF HARDENED CEMENT PASTE |
| title_fullStr | INFLUENCE OF NATURAL ZEOLITE ON PORTLAND CEMENT HYDRATION PROCESSES AND PROPERTIES OF HARDENED CEMENT PASTE |
| title_full_unstemmed | INFLUENCE OF NATURAL ZEOLITE ON PORTLAND CEMENT HYDRATION PROCESSES AND PROPERTIES OF HARDENED CEMENT PASTE |
| title_short | INFLUENCE OF NATURAL ZEOLITE ON PORTLAND CEMENT HYDRATION PROCESSES AND PROPERTIES OF HARDENED CEMENT PASTE |
| title_sort | influence of natural zeolite on portland cement hydration processes and properties of hardened cement paste |
| topic | clinoptilolite aluminosilicate pozzolanic activity setting time mortar flow strength |
| url |
http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1413
|
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