Wpływ struktury syntetycznego szkła popiołowego na właściwości zaczynów i zapraw cementowych
Work analyzes relationship between fly ash pozzolanic activity and structure of its glass component. Model silica fly ashes are prepared by mixing synthetic glass, synthetic mullite and SiO2. Chemical composition of glasses was based on value of parameter ASI, defined as ratio of Al2O3/(Na2O+K2O+2Ca...
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| Veröffentlicht in: | Budownictwo i Architektura 2013, Vol.12 (4), p.29-40 |
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| creator | Tkaczewska, Ewelina |
| description | Work analyzes relationship between fly ash pozzolanic activity and structure of its glass component. Model silica fly ashes are prepared by mixing synthetic glass, synthetic mullite and SiO2. Chemical composition of glasses was based on value of parameter ASI, defined as ratio of Al2O3/(Na2O+K2O+2CaO). Glass structure was built main by tetrahedra SiO4. In glass of parameter ASI1, additionally in octahedra AlO6. It was found that glass containing in its structure Al ion in coordination 4 and 6 shows greater reactivity – more active Al2O3, higher pozzolanic indexes and positive effect on lime mortar strength. Cement with addition of ash containing glass of higher value of ASI has higher hydration heat and higher compressive strength. Using 20wt% of ashes it is possible to obtain cement CEM II/A-V, class 32.5R (Al ion in AlO4) or class 42.5N (Al ion in AlO4 and AlO6) |
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Model silica fly ashes are prepared by mixing synthetic glass, synthetic mullite and SiO2. Chemical composition of glasses was based on value of parameter ASI, defined as ratio of Al2O3/(Na2O+K2O+2CaO). Glass structure was built main by tetrahedra SiO4. In glass of parameter ASI<1, Al ions occur only in tetrahera AlO4, but in glass of parameter ASI>1, additionally in octahedra AlO6. It was found that glass containing in its structure Al ion in coordination 4 and 6 shows greater reactivity – more active Al2O3, higher pozzolanic indexes and positive effect on lime mortar strength. Cement with addition of ash containing glass of higher value of ASI has higher hydration heat and higher compressive strength. 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Model silica fly ashes are prepared by mixing synthetic glass, synthetic mullite and SiO2. Chemical composition of glasses was based on value of parameter ASI, defined as ratio of Al2O3/(Na2O+K2O+2CaO). Glass structure was built main by tetrahedra SiO4. In glass of parameter ASI<1, Al ions occur only in tetrahera AlO4, but in glass of parameter ASI>1, additionally in octahedra AlO6. It was found that glass containing in its structure Al ion in coordination 4 and 6 shows greater reactivity – more active Al2O3, higher pozzolanic indexes and positive effect on lime mortar strength. Cement with addition of ash containing glass of higher value of ASI has higher hydration heat and higher compressive strength. 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(DFG Nationallizenzen)</collection><collection>CEEOL: Open Access</collection><collection>Central and Eastern European Online Library</collection><jtitle>Budownictwo i Architektura</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tkaczewska, Ewelina</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Wpływ struktury syntetycznego szkła popiołowego na właściwości zaczynów i zapraw cementowych</atitle><jtitle>Budownictwo i Architektura</jtitle><addtitle>Civil Engineering and Architecture</addtitle><date>2013</date><risdate>2013</risdate><volume>12</volume><issue>4</issue><spage>29</spage><epage>40</epage><pages>29-40</pages><issn>1899-0665</issn><eissn>2544-3275</eissn><abstract>Work analyzes relationship between fly ash pozzolanic activity and structure of its glass component. Model silica fly ashes are prepared by mixing synthetic glass, synthetic mullite and SiO2. Chemical composition of glasses was based on value of parameter ASI, defined as ratio of Al2O3/(Na2O+K2O+2CaO). Glass structure was built main by tetrahedra SiO4. In glass of parameter ASI<1, Al ions occur only in tetrahera AlO4, but in glass of parameter ASI>1, additionally in octahedra AlO6. It was found that glass containing in its structure Al ion in coordination 4 and 6 shows greater reactivity – more active Al2O3, higher pozzolanic indexes and positive effect on lime mortar strength. Cement with addition of ash containing glass of higher value of ASI has higher hydration heat and higher compressive strength. Using 20wt% of ashes it is possible to obtain cement CEM II/A-V, class 32.5R (Al ion in AlO4) or class 42.5N (Al ion in AlO4 and AlO6)</abstract><pub>Lublin University of Technology Library</pub><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 1899-0665 |
| ispartof | Budownictwo i Architektura, 2013, Vol.12 (4), p.29-40 |
| issn | 1899-0665 2544-3275 |
| language | eng ; pol |
| recordid | cdi_ceeol_journals_906960 |
| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Architecture Geography, Regional studies |
| title | Wpływ struktury syntetycznego szkła popiołowego na właściwości zaczynów i zapraw cementowych |
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