Effect of calcium addition at high temperature on fly ash's activation character
The surface network structure of fly ash modified by calcium addition at high-temperature was analyzed by NMR, and K a method-(ICP-AES) rapid evaluation was used too. By activity exhibition of modified fly ash in cement paste, the effect of calcium addition course at high-temperature on fly ash'...
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| creator | Luo Zhongtao Zhang Lei Yang Jiujun Wang Kai |
| description | The surface network structure of fly ash modified by calcium addition at high-temperature was analyzed by NMR, and K a method-(ICP-AES) rapid evaluation was used too. By activity exhibition of modified fly ash in cement paste, the effect of calcium addition course at high-temperature on fly ash's activity characteristics was studied. The results indicate: modified by calcium addition at high-temperature, fly ash's early K a value improvement, and ratio of activated Al 2 O 3 /SiO 2 was more than twice the average ratio of original fly ash, indicating the calcium addition course at high-temperature was not only destructive on Si-O bond, its destructive power on Al-O bond was also more apparent. Under the environment of cement paste, modified fly ash's reaction took place rapidly at early stage of cement hydration, and continually to consume Ca(OH) 2 produced by cement hydration. |
| doi_str_mv | 10.1109/ICETCE.2011.5774525 |
| format | Conference Proceeding |
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By activity exhibition of modified fly ash in cement paste, the effect of calcium addition course at high-temperature on fly ash's activity characteristics was studied. The results indicate: modified by calcium addition at high-temperature, fly ash's early K a value improvement, and ratio of activated Al 2 O 3 /SiO 2 was more than twice the average ratio of original fly ash, indicating the calcium addition course at high-temperature was not only destructive on Si-O bond, its destructive power on Al-O bond was also more apparent. Under the environment of cement paste, modified fly ash's reaction took place rapidly at early stage of cement hydration, and continually to consume Ca(OH) 2 produced by cement hydration.</description><identifier>ISBN: 9781457702891</identifier><identifier>ISBN: 1457702894</identifier><identifier>EISBN: 9781457702907</identifier><identifier>EISBN: 1457702886</identifier><identifier>EISBN: 9781457702884</identifier><identifier>EISBN: 1457702908</identifier><identifier>DOI: 10.1109/ICETCE.2011.5774525</identifier><language>chi ; eng</language><publisher>IEEE</publisher><subject>activity characteristics ; Aluminum oxide ; Calcium ; calcium addition ; Concrete ; depolymerization ; Fly ash ; Nuclear magnetic resonance ; X-ray scattering</subject><ispartof>2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011, p.5896-5899</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/5774525$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,780,784,789,790,2058,27925,54920</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/5774525$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Luo Zhongtao</creatorcontrib><creatorcontrib>Zhang Lei</creatorcontrib><creatorcontrib>Yang Jiujun</creatorcontrib><creatorcontrib>Wang Kai</creatorcontrib><title>Effect of calcium addition at high temperature on fly ash's activation character</title><title>2011 International Conference on Electric Technology and Civil Engineering (ICETCE)</title><addtitle>ICETCE</addtitle><description>The surface network structure of fly ash modified by calcium addition at high-temperature was analyzed by NMR, and K a method-(ICP-AES) rapid evaluation was used too. By activity exhibition of modified fly ash in cement paste, the effect of calcium addition course at high-temperature on fly ash's activity characteristics was studied. The results indicate: modified by calcium addition at high-temperature, fly ash's early K a value improvement, and ratio of activated Al 2 O 3 /SiO 2 was more than twice the average ratio of original fly ash, indicating the calcium addition course at high-temperature was not only destructive on Si-O bond, its destructive power on Al-O bond was also more apparent. Under the environment of cement paste, modified fly ash's reaction took place rapidly at early stage of cement hydration, and continually to consume Ca(OH) 2 produced by cement hydration.</description><subject>activity characteristics</subject><subject>Aluminum oxide</subject><subject>Calcium</subject><subject>calcium addition</subject><subject>Concrete</subject><subject>depolymerization</subject><subject>Fly ash</subject><subject>Nuclear magnetic resonance</subject><subject>X-ray scattering</subject><isbn>9781457702891</isbn><isbn>1457702894</isbn><isbn>9781457702907</isbn><isbn>1457702886</isbn><isbn>9781457702884</isbn><isbn>1457702908</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2011</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNpNkEtLw0AUhUdEUGp-QTezc5V45z13KSVqoaCL7st0HmYksSWZCv33Bu3Cszl8h8PlcghZMmgYA3xcr9rtqm04MNYoY6Ti6opUaCyTMwJHMNf_2SK7JdU0fcIsrZFZuCPvbUrRF3pI1Lve59NAXQi55MMXdYV2-aOjJQ7HOLpyGiOd49SfqZu6h4k6X_K3--36zo0zxvGe3CTXT7G6-IJsn-c_X-vN28t69bSpM0KpPUJA6ZNUXkGQ4FEzE_a4FwwRlDCKC8VRxGhE8Bqt51Z6HV0wGk2yYkGWf2dzjHF3HPPgxvPuMoP4AR6bUHg</recordid><startdate>201104</startdate><enddate>201104</enddate><creator>Luo Zhongtao</creator><creator>Zhang Lei</creator><creator>Yang Jiujun</creator><creator>Wang Kai</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>201104</creationdate><title>Effect of calcium addition at high temperature on fly ash's activation character</title><author>Luo Zhongtao ; Zhang Lei ; Yang Jiujun ; Wang Kai</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i90t-c90d94cf45c50d40c9617db9b319905375235293ee73dc698c284c6ead7697f83</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>chi ; eng</language><creationdate>2011</creationdate><topic>activity characteristics</topic><topic>Aluminum oxide</topic><topic>Calcium</topic><topic>calcium addition</topic><topic>Concrete</topic><topic>depolymerization</topic><topic>Fly ash</topic><topic>Nuclear magnetic resonance</topic><topic>X-ray scattering</topic><toplevel>online_resources</toplevel><creatorcontrib>Luo Zhongtao</creatorcontrib><creatorcontrib>Zhang Lei</creatorcontrib><creatorcontrib>Yang Jiujun</creatorcontrib><creatorcontrib>Wang Kai</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Luo Zhongtao</au><au>Zhang Lei</au><au>Yang Jiujun</au><au>Wang Kai</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Effect of calcium addition at high temperature on fly ash's activation character</atitle><btitle>2011 International Conference on Electric Technology and Civil Engineering (ICETCE)</btitle><stitle>ICETCE</stitle><date>2011-04</date><risdate>2011</risdate><spage>5896</spage><epage>5899</epage><pages>5896-5899</pages><isbn>9781457702891</isbn><isbn>1457702894</isbn><eisbn>9781457702907</eisbn><eisbn>1457702886</eisbn><eisbn>9781457702884</eisbn><eisbn>1457702908</eisbn><abstract>The surface network structure of fly ash modified by calcium addition at high-temperature was analyzed by NMR, and K a method-(ICP-AES) rapid evaluation was used too. By activity exhibition of modified fly ash in cement paste, the effect of calcium addition course at high-temperature on fly ash's activity characteristics was studied. The results indicate: modified by calcium addition at high-temperature, fly ash's early K a value improvement, and ratio of activated Al 2 O 3 /SiO 2 was more than twice the average ratio of original fly ash, indicating the calcium addition course at high-temperature was not only destructive on Si-O bond, its destructive power on Al-O bond was also more apparent. Under the environment of cement paste, modified fly ash's reaction took place rapidly at early stage of cement hydration, and continually to consume Ca(OH) 2 produced by cement hydration.</abstract><pub>IEEE</pub><doi>10.1109/ICETCE.2011.5774525</doi><tpages>4</tpages></addata></record> |
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| language | chi ; eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | activity characteristics Aluminum oxide Calcium calcium addition Concrete depolymerization Fly ash Nuclear magnetic resonance X-ray scattering |
| title | Effect of calcium addition at high temperature on fly ash's activation character |
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