Geopolymer materials based on natural zeolite
One of the potential raw materials for preparation of geopolymers is the natural zeolite. In the present report, the used natural zeolite (clinoptilolite) is from huge deposit near Beli Plast, Bulgaria. Geopolymer pastes and mortars are prepared by using three different alkaline activators—sodium hy...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-06-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221450951630064X |
| _version_ | 1811200761669877760 |
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| author | Aleksandar Nikolov Ivan Rostovsky Henk Nugteren |
| author_facet | Aleksandar Nikolov Ivan Rostovsky Henk Nugteren |
| author_sort | Aleksandar Nikolov |
| collection | DOAJ |
| description | One of the potential raw materials for preparation of geopolymers is the natural zeolite. In the present report, the used natural zeolite (clinoptilolite) is from huge deposit near Beli Plast, Bulgaria. Geopolymer pastes and mortars are prepared by using three different alkaline activators—sodium hydroxide, sodium silicate and sodium carbonate. The hardened geopolymers are tested for determination of mechanical properties by traditional standardized methods. The structure and the composition of the materials are studied by direct physical methods—X-ray diffraction (XRD), thermal analysis (DTA and TGA) and scanning electron microscopy (SEM). The results show variable degree of dissolutions of the raw zeolite material when using different activators and formation of solid geopolymer materials with qualitatively different structure. Despite its relatively low compressive strength, geopolymers based on natural zeolite cured at room temperature and used as coating, show very good adhesion to concrete. |
| first_indexed | 2024-04-12T02:09:05Z |
| format | Article |
| id | doaj.art-7a15fcd32fef4b149255dbda8d2628f3 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-12T02:09:05Z |
| publishDate | 2017-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-7a15fcd32fef4b149255dbda8d2628f32022-12-22T03:52:27ZengElsevierCase Studies in Construction Materials2214-50952017-06-016C19820510.1016/j.cscm.2017.03.001Geopolymer materials based on natural zeoliteAleksandar Nikolov0Ivan Rostovsky1Henk Nugteren2Department of Building Materials and Insulations, Faculty of Civil Engineering, University of Architecture, Civil Engineering and Geodesy, blvd. “Hristo Smirnenski” 1, Sofia, BulgariaDepartment of Building Materials and Insulations, Faculty of Civil Engineering, University of Architecture, Civil Engineering and Geodesy, blvd. “Hristo Smirnenski” 1, Sofia, BulgariaSection Product and Process Engineering, Department of Chemical Engineering, Delft University of Technology, Delft, The NetherlandsOne of the potential raw materials for preparation of geopolymers is the natural zeolite. In the present report, the used natural zeolite (clinoptilolite) is from huge deposit near Beli Plast, Bulgaria. Geopolymer pastes and mortars are prepared by using three different alkaline activators—sodium hydroxide, sodium silicate and sodium carbonate. The hardened geopolymers are tested for determination of mechanical properties by traditional standardized methods. The structure and the composition of the materials are studied by direct physical methods—X-ray diffraction (XRD), thermal analysis (DTA and TGA) and scanning electron microscopy (SEM). The results show variable degree of dissolutions of the raw zeolite material when using different activators and formation of solid geopolymer materials with qualitatively different structure. Despite its relatively low compressive strength, geopolymers based on natural zeolite cured at room temperature and used as coating, show very good adhesion to concrete.http://www.sciencedirect.com/science/article/pii/S221450951630064XGeopolymerNatural zeoliteClinoptilolite |
| spellingShingle | Aleksandar Nikolov Ivan Rostovsky Henk Nugteren Geopolymer materials based on natural zeolite Case Studies in Construction Materials Geopolymer Natural zeolite Clinoptilolite |
| title | Geopolymer materials based on natural zeolite |
| title_full | Geopolymer materials based on natural zeolite |
| title_fullStr | Geopolymer materials based on natural zeolite |
| title_full_unstemmed | Geopolymer materials based on natural zeolite |
| title_short | Geopolymer materials based on natural zeolite |
| title_sort | geopolymer materials based on natural zeolite |
| topic | Geopolymer Natural zeolite Clinoptilolite |
| url | http://www.sciencedirect.com/science/article/pii/S221450951630064X |
| work_keys_str_mv | AT aleksandarnikolov geopolymermaterialsbasedonnaturalzeolite AT ivanrostovsky geopolymermaterialsbasedonnaturalzeolite AT henknugteren geopolymermaterialsbasedonnaturalzeolite |