Characterisation of class F fly ash geopolymer pastes immersed in acid and alkaline solutions
► As prepared fly ash based geopolymer is weak in strong acid and alkali solutions. ► Acid and alkaline resistance of fly ash based geopolymers were improved by preliminary calcination. ► Preliminary calcination caused a partial surface crystallisation of geopolymer constituents. ► Solubilities of g...
Gespeichert in:
| Veröffentlicht in: | Cement & concrete composites 2011-11, Vol.33 (10), p.1086-1091 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1091 |
|---|---|
| container_issue | 10 |
| container_start_page | 1086 |
| container_title | Cement & concrete composites |
| container_volume | 33 |
| creator | Temuujin, J. Minjigmaa, A. Lee, M. Chen-Tan, N. van Riessen, A. |
| description | ► As prepared fly ash based geopolymer is weak in strong acid and alkali solutions. ► Acid and alkaline resistance of fly ash based geopolymers were improved by preliminary calcination. ► Preliminary calcination caused a partial surface crystallisation of geopolymer constituents. ► Solubilities of geopolymer cations in acid and alkali were reduced up to 16-fold by calcination.
Acid and alkaline resistance of class F fly ash based geopolymer pastes has been investigated. As prepared geopolymers showed high solubility in both strong alkali and acid solutions. Calcination of the fly ash based geopolymers at 600
°C resulted in a decrease of amorphous component from 63.4 to 61.6
wt.%. However, the solubility of the Al, Si and Fe ions in 14
M NaOH and 18% HCl after 5
days immersion decreased from 1.3 to 16-fold in comparison to as prepared geopolymer samples. Calcination of the geopolymers also resulted in a 30% reduction in compressive strength. Acid and alkali resistance of the geopolymers investigated strongly depends on mineralogical composition change of the calcined geopolymer. Partial crystallisation of non-reacted fly ash particles in the geopolymer decreases its solubility in acid and alkali solutions. |
| doi_str_mv | 10.1016/j.cemconcomp.2011.08.008 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_963845637</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0958946511001405</els_id><sourcerecordid>963845637</sourcerecordid><originalsourceid>FETCH-LOGICAL-c383t-5da0759976517599c66a82f22cbbc2bceadffed4c4bae756b8fe232653d195eb3</originalsourceid><addsrcrecordid>eNqFkMFq3DAQhkVJoZtt30G39mJXsixZPjZLkxQCvbTQSxHyeNxoK1uuxhvYt6_NBnprDsMw8P0_zMcYl6KUQpqPxxJwhDRBGueyElKWwpZC2FdsJ22jCtWqH1dsJ1pti7Y2-g27JjoKIUzdVDv28_Dos4cFcyC_hDTxNHCInojf8iGeuadH_gvTnOJ5xMxnTwsSD-N6EPY8TNxD6Lmf1om_fQwTckrxtHXRW_Z68JHw3fPes--3n78d7ouHr3dfDp8eClBWLYXuvWh02zZGy22DMd5WQ1VB10HVAfp-GLCvoe48Ntp0dsBKVUarXrYaO7Vn7y-9c05_TkiLGwMBxugnTCdyrVG21kY1K_nhv6Rs1CpPGb2h9oJCTkQZBzfnMPp8dlK4zb07un_u3ebeCeu2-J7dXKK4Pv0UMDuCgBNgHzLC4voUXi75C10plCw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1730083657</pqid></control><display><type>article</type><title>Characterisation of class F fly ash geopolymer pastes immersed in acid and alkaline solutions</title><source>Access via ScienceDirect (Elsevier)</source><creator>Temuujin, J. ; Minjigmaa, A. ; Lee, M. ; Chen-Tan, N. ; van Riessen, A.</creator><creatorcontrib>Temuujin, J. ; Minjigmaa, A. ; Lee, M. ; Chen-Tan, N. ; van Riessen, A.</creatorcontrib><description>► As prepared fly ash based geopolymer is weak in strong acid and alkali solutions. ► Acid and alkaline resistance of fly ash based geopolymers were improved by preliminary calcination. ► Preliminary calcination caused a partial surface crystallisation of geopolymer constituents. ► Solubilities of geopolymer cations in acid and alkali were reduced up to 16-fold by calcination.
Acid and alkaline resistance of class F fly ash based geopolymer pastes has been investigated. As prepared geopolymers showed high solubility in both strong alkali and acid solutions. Calcination of the fly ash based geopolymers at 600
°C resulted in a decrease of amorphous component from 63.4 to 61.6
wt.%. However, the solubility of the Al, Si and Fe ions in 14
M NaOH and 18% HCl after 5
days immersion decreased from 1.3 to 16-fold in comparison to as prepared geopolymer samples. Calcination of the geopolymers also resulted in a 30% reduction in compressive strength. Acid and alkali resistance of the geopolymers investigated strongly depends on mineralogical composition change of the calcined geopolymer. Partial crystallisation of non-reacted fly ash particles in the geopolymer decreases its solubility in acid and alkali solutions.</description><identifier>ISSN: 0958-9465</identifier><identifier>EISSN: 1873-393X</identifier><identifier>DOI: 10.1016/j.cemconcomp.2011.08.008</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Aluminum ; Calcination ; Cements ; Chemical attack ; Crystallization ; Fly ash ; Geopolymers ; Iron ; Pastes ; Phase transformation ; Solubility</subject><ispartof>Cement & concrete composites, 2011-11, Vol.33 (10), p.1086-1091</ispartof><rights>2011 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c383t-5da0759976517599c66a82f22cbbc2bceadffed4c4bae756b8fe232653d195eb3</citedby><cites>FETCH-LOGICAL-c383t-5da0759976517599c66a82f22cbbc2bceadffed4c4bae756b8fe232653d195eb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.cemconcomp.2011.08.008$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Temuujin, J.</creatorcontrib><creatorcontrib>Minjigmaa, A.</creatorcontrib><creatorcontrib>Lee, M.</creatorcontrib><creatorcontrib>Chen-Tan, N.</creatorcontrib><creatorcontrib>van Riessen, A.</creatorcontrib><title>Characterisation of class F fly ash geopolymer pastes immersed in acid and alkaline solutions</title><title>Cement & concrete composites</title><description>► As prepared fly ash based geopolymer is weak in strong acid and alkali solutions. ► Acid and alkaline resistance of fly ash based geopolymers were improved by preliminary calcination. ► Preliminary calcination caused a partial surface crystallisation of geopolymer constituents. ► Solubilities of geopolymer cations in acid and alkali were reduced up to 16-fold by calcination.
Acid and alkaline resistance of class F fly ash based geopolymer pastes has been investigated. As prepared geopolymers showed high solubility in both strong alkali and acid solutions. Calcination of the fly ash based geopolymers at 600
°C resulted in a decrease of amorphous component from 63.4 to 61.6
wt.%. However, the solubility of the Al, Si and Fe ions in 14
M NaOH and 18% HCl after 5
days immersion decreased from 1.3 to 16-fold in comparison to as prepared geopolymer samples. Calcination of the geopolymers also resulted in a 30% reduction in compressive strength. Acid and alkali resistance of the geopolymers investigated strongly depends on mineralogical composition change of the calcined geopolymer. Partial crystallisation of non-reacted fly ash particles in the geopolymer decreases its solubility in acid and alkali solutions.</description><subject>Aluminum</subject><subject>Calcination</subject><subject>Cements</subject><subject>Chemical attack</subject><subject>Crystallization</subject><subject>Fly ash</subject><subject>Geopolymers</subject><subject>Iron</subject><subject>Pastes</subject><subject>Phase transformation</subject><subject>Solubility</subject><issn>0958-9465</issn><issn>1873-393X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkMFq3DAQhkVJoZtt30G39mJXsixZPjZLkxQCvbTQSxHyeNxoK1uuxhvYt6_NBnprDsMw8P0_zMcYl6KUQpqPxxJwhDRBGueyElKWwpZC2FdsJ22jCtWqH1dsJ1pti7Y2-g27JjoKIUzdVDv28_Dos4cFcyC_hDTxNHCInojf8iGeuadH_gvTnOJ5xMxnTwsSD-N6EPY8TNxD6Lmf1om_fQwTckrxtHXRW_Z68JHw3fPes--3n78d7ouHr3dfDp8eClBWLYXuvWh02zZGy22DMd5WQ1VB10HVAfp-GLCvoe48Ntp0dsBKVUarXrYaO7Vn7y-9c05_TkiLGwMBxugnTCdyrVG21kY1K_nhv6Rs1CpPGb2h9oJCTkQZBzfnMPp8dlK4zb07un_u3ebeCeu2-J7dXKK4Pv0UMDuCgBNgHzLC4voUXi75C10plCw</recordid><startdate>20111101</startdate><enddate>20111101</enddate><creator>Temuujin, J.</creator><creator>Minjigmaa, A.</creator><creator>Lee, M.</creator><creator>Chen-Tan, N.</creator><creator>van Riessen, A.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>20111101</creationdate><title>Characterisation of class F fly ash geopolymer pastes immersed in acid and alkaline solutions</title><author>Temuujin, J. ; Minjigmaa, A. ; Lee, M. ; Chen-Tan, N. ; van Riessen, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c383t-5da0759976517599c66a82f22cbbc2bceadffed4c4bae756b8fe232653d195eb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Aluminum</topic><topic>Calcination</topic><topic>Cements</topic><topic>Chemical attack</topic><topic>Crystallization</topic><topic>Fly ash</topic><topic>Geopolymers</topic><topic>Iron</topic><topic>Pastes</topic><topic>Phase transformation</topic><topic>Solubility</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Temuujin, J.</creatorcontrib><creatorcontrib>Minjigmaa, A.</creatorcontrib><creatorcontrib>Lee, M.</creatorcontrib><creatorcontrib>Chen-Tan, N.</creatorcontrib><creatorcontrib>van Riessen, A.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Cement & concrete composites</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Temuujin, J.</au><au>Minjigmaa, A.</au><au>Lee, M.</au><au>Chen-Tan, N.</au><au>van Riessen, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Characterisation of class F fly ash geopolymer pastes immersed in acid and alkaline solutions</atitle><jtitle>Cement & concrete composites</jtitle><date>2011-11-01</date><risdate>2011</risdate><volume>33</volume><issue>10</issue><spage>1086</spage><epage>1091</epage><pages>1086-1091</pages><issn>0958-9465</issn><eissn>1873-393X</eissn><abstract>► As prepared fly ash based geopolymer is weak in strong acid and alkali solutions. ► Acid and alkaline resistance of fly ash based geopolymers were improved by preliminary calcination. ► Preliminary calcination caused a partial surface crystallisation of geopolymer constituents. ► Solubilities of geopolymer cations in acid and alkali were reduced up to 16-fold by calcination.
Acid and alkaline resistance of class F fly ash based geopolymer pastes has been investigated. As prepared geopolymers showed high solubility in both strong alkali and acid solutions. Calcination of the fly ash based geopolymers at 600
°C resulted in a decrease of amorphous component from 63.4 to 61.6
wt.%. However, the solubility of the Al, Si and Fe ions in 14
M NaOH and 18% HCl after 5
days immersion decreased from 1.3 to 16-fold in comparison to as prepared geopolymer samples. Calcination of the geopolymers also resulted in a 30% reduction in compressive strength. Acid and alkali resistance of the geopolymers investigated strongly depends on mineralogical composition change of the calcined geopolymer. Partial crystallisation of non-reacted fly ash particles in the geopolymer decreases its solubility in acid and alkali solutions.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.cemconcomp.2011.08.008</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0958-9465 |
| ispartof | Cement & concrete composites, 2011-11, Vol.33 (10), p.1086-1091 |
| issn | 0958-9465 1873-393X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_963845637 |
| source | Access via ScienceDirect (Elsevier) |
| subjects | Aluminum Calcination Cements Chemical attack Crystallization Fly ash Geopolymers Iron Pastes Phase transformation Solubility |
| title | Characterisation of class F fly ash geopolymer pastes immersed in acid and alkaline solutions |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-22T11%3A15%3A40IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Characterisation%20of%20class%20F%20fly%20ash%20geopolymer%20pastes%20immersed%20in%20acid%20and%20alkaline%20solutions&rft.jtitle=Cement%20&%20concrete%20composites&rft.au=Temuujin,%20J.&rft.date=2011-11-01&rft.volume=33&rft.issue=10&rft.spage=1086&rft.epage=1091&rft.pages=1086-1091&rft.issn=0958-9465&rft.eissn=1873-393X&rft_id=info:doi/10.1016/j.cemconcomp.2011.08.008&rft_dat=%3Cproquest_cross%3E963845637%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1730083657&rft_id=info:pmid/&rft_els_id=S0958946511001405&rfr_iscdi=true |