EFFECTS OF BLAST-FURNACE SLAG ON NATURAL POZZOLAN-BASED GEOPOLYMER CEMENT
A number of geopolymer cement mixes were designed and produced by alkali-activation of a pumice-type natural pozzolan. Effects of blast-furnace slag on basic engineering properties of the mixes were studied. Different engineering properties of the mixes such as setting times and 28-day compressive s...
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2011-03-01
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| Series: | Ceramics-Silikáty |
| Subjects: | |
| Online Access: | http://www.ceramics-silikaty.cz/2011/pdf/2011_01_68.pdf |
| _version_ | 1831690108432023552 |
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| author | MAHSHAD YAZDANIPOUR EBRAHIM NAJAFI KANI ALI ALLAHVERDI |
| author_facet | MAHSHAD YAZDANIPOUR EBRAHIM NAJAFI KANI ALI ALLAHVERDI |
| author_sort | MAHSHAD YAZDANIPOUR |
| collection | DOAJ |
| description | A number of geopolymer cement mixes were designed and produced by alkali-activation of a pumice-type natural pozzolan. Effects of blast-furnace slag on basic engineering properties of the mixes were studied. Different engineering properties of the mixes such as setting times and 28-day compressive strength were studied at different amounts of blast-furnace slag, sodium oxide content, and water-to-cement ratio. The mix comprising of 5 wt.% blast-furnace slag and 8 wt.% Na2O with a water-to-dry binder ratio of 0.30 exhibits the highest 28-day compressive strength, i.e. 36 MPa. Mixes containing 5 wt.% of ground granulated blast furnace slag showed the least efflorescence or best soundness. Laboratory techniques of X-ray diffractometry (XRD), fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) were utilized for characterizing a number of mixes and studying their molecular and micro-structure. Investigations done by scanning electron microscopy confirm that smaller blast-furnace slag particles react totally while the larger ones react partially with alkaline activators and contribute to the formation of a composite microstructure. |
| first_indexed | 2024-12-20T11:03:16Z |
| format | Article |
| id | doaj.art-04664faa645e4e4aa98a30257fa9732d |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-12-20T11:03:16Z |
| publishDate | 2011-03-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-04664faa645e4e4aa98a30257fa9732d2022-12-21T19:42:56ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472011-03-015516878EFFECTS OF BLAST-FURNACE SLAG ON NATURAL POZZOLAN-BASED GEOPOLYMER CEMENTMAHSHAD YAZDANIPOUREBRAHIM NAJAFI KANIALI ALLAHVERDIA number of geopolymer cement mixes were designed and produced by alkali-activation of a pumice-type natural pozzolan. Effects of blast-furnace slag on basic engineering properties of the mixes were studied. Different engineering properties of the mixes such as setting times and 28-day compressive strength were studied at different amounts of blast-furnace slag, sodium oxide content, and water-to-cement ratio. The mix comprising of 5 wt.% blast-furnace slag and 8 wt.% Na2O with a water-to-dry binder ratio of 0.30 exhibits the highest 28-day compressive strength, i.e. 36 MPa. Mixes containing 5 wt.% of ground granulated blast furnace slag showed the least efflorescence or best soundness. Laboratory techniques of X-ray diffractometry (XRD), fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) were utilized for characterizing a number of mixes and studying their molecular and micro-structure. Investigations done by scanning electron microscopy confirm that smaller blast-furnace slag particles react totally while the larger ones react partially with alkaline activators and contribute to the formation of a composite microstructure.http://www.ceramics-silikaty.cz/2011/pdf/2011_01_68.pdfGeopolymer cementNatural PozzolanGranulated blast furnace SlagMechanical PropertiesMicrostructure |
| spellingShingle | MAHSHAD YAZDANIPOUR EBRAHIM NAJAFI KANI ALI ALLAHVERDI EFFECTS OF BLAST-FURNACE SLAG ON NATURAL POZZOLAN-BASED GEOPOLYMER CEMENT Ceramics-Silikáty Geopolymer cement Natural Pozzolan Granulated blast furnace Slag Mechanical Properties Microstructure |
| title | EFFECTS OF BLAST-FURNACE SLAG ON NATURAL POZZOLAN-BASED GEOPOLYMER CEMENT |
| title_full | EFFECTS OF BLAST-FURNACE SLAG ON NATURAL POZZOLAN-BASED GEOPOLYMER CEMENT |
| title_fullStr | EFFECTS OF BLAST-FURNACE SLAG ON NATURAL POZZOLAN-BASED GEOPOLYMER CEMENT |
| title_full_unstemmed | EFFECTS OF BLAST-FURNACE SLAG ON NATURAL POZZOLAN-BASED GEOPOLYMER CEMENT |
| title_short | EFFECTS OF BLAST-FURNACE SLAG ON NATURAL POZZOLAN-BASED GEOPOLYMER CEMENT |
| title_sort | effects of blast furnace slag on natural pozzolan based geopolymer cement |
| topic | Geopolymer cement Natural Pozzolan Granulated blast furnace Slag Mechanical Properties Microstructure |
| url | http://www.ceramics-silikaty.cz/2011/pdf/2011_01_68.pdf |
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