Self-cementitious properties of fly ashes from CFBC boilers co-firing coal and high-sulphur petroleum coke
Self-cementitious properties of fly ash from circulating fluidized bed combustion boiler co-firing coal and high-sulphur petroleum coke (CPFA) were investigated. CPFA was self-cementitious which was affected by its fineness and chemical compositions, especially the contents of SO3 and free lime (f-C...
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| Veröffentlicht in: | Cement and concrete research 2007-06, Vol.37 (6), p.871-876 |
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| creator | Sheng, Guanghong Li, Qin Zhai, Jianping Li, Feihu |
| description | Self-cementitious properties of fly ash from circulating fluidized bed combustion boiler co-firing coal and high-sulphur petroleum coke (CPFA) were investigated. CPFA was self-cementitious which was affected by its fineness and chemical compositions, especially the contents of SO3 and free lime (f-CaO). Higher contents of SO3 and f-CaO were beneficial to self-cementitious strength; the self-cementitious strength increases with a decrease of its 45 μm sieve residue. The expansive ratio of CPFA hardened paste was high because of generation of ettringite (AFt), which was influenced by its water to binder ratio (W/A), curing style and grinding of the ash. The paste cured in water had the highest expansive ratio, and grinding of CPFA was beneficial to its volume stability. The hydration products of CPFA detected by X-ray diffraction (XRD) and scanning electron microscopy (SEM) were portlandite, gypsum, AFt and hydrated calcium silicate (C–S–H). |
| doi_str_mv | 10.1016/j.cemconres.2007.03.013 |
| format | Article |
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CPFA was self-cementitious which was affected by its fineness and chemical compositions, especially the contents of SO3 and free lime (f-CaO). Higher contents of SO3 and f-CaO were beneficial to self-cementitious strength; the self-cementitious strength increases with a decrease of its 45 μm sieve residue. The expansive ratio of CPFA hardened paste was high because of generation of ettringite (AFt), which was influenced by its water to binder ratio (W/A), curing style and grinding of the ash. The paste cured in water had the highest expansive ratio, and grinding of CPFA was beneficial to its volume stability. The hydration products of CPFA detected by X-ray diffraction (XRD) and scanning electron microscopy (SEM) were portlandite, gypsum, AFt and hydrated calcium silicate (C–S–H).</description><identifier>ISSN: 0008-8846</identifier><identifier>EISSN: 1873-3948</identifier><identifier>DOI: 10.1016/j.cemconres.2007.03.013</identifier><identifier>CODEN: CCNRAI</identifier><language>eng</language><publisher>New York, NY: Elsevier Ltd</publisher><subject>Aggregates and other concrete constituents ; Applied sciences ; Buildings. Public works ; CALCIUM OXIDES ; CALCIUM SILICATES ; Cement concrete constituents ; CEMENTING ; CFBC fly ash ; CHEMICAL COMPOSITION ; CIRCULATING SYSTEMS ; COAL ; COKE ; COMBUSTION ; Concrete additives (fillers, pozzolanic and hydraulic materials) ; CURING ; Exact sciences and technology ; Expansion ; FLUIDIZED BEDS ; FLY ASH ; GRINDING ; GYPSUM ; HYDRATION ; Hydration product ; Materials ; MATERIALS SCIENCE ; PETROLEUM PRODUCTS ; SCANNING ELECTRON MICROSCOPY ; Self-cementing ; SULFUR ; WATER ; X-RAY DIFFRACTION</subject><ispartof>Cement and concrete research, 2007-06, Vol.37 (6), p.871-876</ispartof><rights>2007 Elsevier Ltd</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c404t-37c7be0569a4045f6496821e6c74537995ed1e1537bae79732ba0068ba5541f73</citedby><cites>FETCH-LOGICAL-c404t-37c7be0569a4045f6496821e6c74537995ed1e1537bae79732ba0068ba5541f73</cites><orcidid>0000-0002-2969-8276</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.cemconres.2007.03.013$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3548,27923,27924,45994</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18825315$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/20995389$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Sheng, Guanghong</creatorcontrib><creatorcontrib>Li, Qin</creatorcontrib><creatorcontrib>Zhai, Jianping</creatorcontrib><creatorcontrib>Li, Feihu</creatorcontrib><title>Self-cementitious properties of fly ashes from CFBC boilers co-firing coal and high-sulphur petroleum coke</title><title>Cement and concrete research</title><description>Self-cementitious properties of fly ash from circulating fluidized bed combustion boiler co-firing coal and high-sulphur petroleum coke (CPFA) were investigated. CPFA was self-cementitious which was affected by its fineness and chemical compositions, especially the contents of SO3 and free lime (f-CaO). Higher contents of SO3 and f-CaO were beneficial to self-cementitious strength; the self-cementitious strength increases with a decrease of its 45 μm sieve residue. The expansive ratio of CPFA hardened paste was high because of generation of ettringite (AFt), which was influenced by its water to binder ratio (W/A), curing style and grinding of the ash. The paste cured in water had the highest expansive ratio, and grinding of CPFA was beneficial to its volume stability. The hydration products of CPFA detected by X-ray diffraction (XRD) and scanning electron microscopy (SEM) were portlandite, gypsum, AFt and hydrated calcium silicate (C–S–H).</description><subject>Aggregates and other concrete constituents</subject><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>CALCIUM OXIDES</subject><subject>CALCIUM SILICATES</subject><subject>Cement concrete constituents</subject><subject>CEMENTING</subject><subject>CFBC fly ash</subject><subject>CHEMICAL COMPOSITION</subject><subject>CIRCULATING SYSTEMS</subject><subject>COAL</subject><subject>COKE</subject><subject>COMBUSTION</subject><subject>Concrete additives (fillers, pozzolanic and hydraulic materials)</subject><subject>CURING</subject><subject>Exact sciences and technology</subject><subject>Expansion</subject><subject>FLUIDIZED BEDS</subject><subject>FLY ASH</subject><subject>GRINDING</subject><subject>GYPSUM</subject><subject>HYDRATION</subject><subject>Hydration product</subject><subject>Materials</subject><subject>MATERIALS SCIENCE</subject><subject>PETROLEUM PRODUCTS</subject><subject>SCANNING ELECTRON MICROSCOPY</subject><subject>Self-cementing</subject><subject>SULFUR</subject><subject>WATER</subject><subject>X-RAY DIFFRACTION</subject><issn>0008-8846</issn><issn>1873-3948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFUU2v1CAUJUYTx9HfIInRXSsUWmD5nPjU5CUu1DWhzOWVkZYK1OT9e2nmRZeuuCec-3HOQeg1JS0ldHh_aS3MNi4JctsRIlrCWkLZE3SgUrCGKS6fogMhRDZS8uE5epHzpcKhY_KALt8guKZOgKX44uOW8ZriCql4yDg67MIDNnmqwKU449PthxMeow-QMraxcT755b5WJmCznPHk76cmb2GdtoRXKCkG2Ob6_xNeomfOhAyvHt8j-nH78fvpc3P39dOX081dYznhpWHCihFIPyhTce8GrgbZURis4D0TSvVwpkBrORoQSrBuNFWNHE3fc-oEO6I317kxF6-z9QXsVA1awBbdkTqASVVZ766sKvfXBrno2WcLIZgFqgu6U0oJzneiuBJtijkncHpNfjbpQVOi9wT0Rf9NQO8JaMJ0TaB2vn1cYbI1wSWzWJ__tUvZ9awKOaKbKw-qK789pP1oWCycfdpvPkf_311_APUdoCs</recordid><startdate>20070601</startdate><enddate>20070601</enddate><creator>Sheng, Guanghong</creator><creator>Li, Qin</creator><creator>Zhai, Jianping</creator><creator>Li, Feihu</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-2969-8276</orcidid></search><sort><creationdate>20070601</creationdate><title>Self-cementitious properties of fly ashes from CFBC boilers co-firing coal and high-sulphur petroleum coke</title><author>Sheng, Guanghong ; Li, Qin ; Zhai, Jianping ; Li, Feihu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c404t-37c7be0569a4045f6496821e6c74537995ed1e1537bae79732ba0068ba5541f73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Aggregates and other concrete constituents</topic><topic>Applied sciences</topic><topic>Buildings. Public works</topic><topic>CALCIUM OXIDES</topic><topic>CALCIUM SILICATES</topic><topic>Cement concrete constituents</topic><topic>CEMENTING</topic><topic>CFBC fly ash</topic><topic>CHEMICAL COMPOSITION</topic><topic>CIRCULATING SYSTEMS</topic><topic>COAL</topic><topic>COKE</topic><topic>COMBUSTION</topic><topic>Concrete additives (fillers, pozzolanic and hydraulic materials)</topic><topic>CURING</topic><topic>Exact sciences and technology</topic><topic>Expansion</topic><topic>FLUIDIZED BEDS</topic><topic>FLY ASH</topic><topic>GRINDING</topic><topic>GYPSUM</topic><topic>HYDRATION</topic><topic>Hydration product</topic><topic>Materials</topic><topic>MATERIALS SCIENCE</topic><topic>PETROLEUM PRODUCTS</topic><topic>SCANNING ELECTRON MICROSCOPY</topic><topic>Self-cementing</topic><topic>SULFUR</topic><topic>WATER</topic><topic>X-RAY DIFFRACTION</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sheng, Guanghong</creatorcontrib><creatorcontrib>Li, Qin</creatorcontrib><creatorcontrib>Zhai, Jianping</creatorcontrib><creatorcontrib>Li, Feihu</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>OSTI.GOV</collection><jtitle>Cement and concrete research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sheng, Guanghong</au><au>Li, Qin</au><au>Zhai, Jianping</au><au>Li, Feihu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Self-cementitious properties of fly ashes from CFBC boilers co-firing coal and high-sulphur petroleum coke</atitle><jtitle>Cement and concrete research</jtitle><date>2007-06-01</date><risdate>2007</risdate><volume>37</volume><issue>6</issue><spage>871</spage><epage>876</epage><pages>871-876</pages><issn>0008-8846</issn><eissn>1873-3948</eissn><coden>CCNRAI</coden><abstract>Self-cementitious properties of fly ash from circulating fluidized bed combustion boiler co-firing coal and high-sulphur petroleum coke (CPFA) were investigated. CPFA was self-cementitious which was affected by its fineness and chemical compositions, especially the contents of SO3 and free lime (f-CaO). Higher contents of SO3 and f-CaO were beneficial to self-cementitious strength; the self-cementitious strength increases with a decrease of its 45 μm sieve residue. The expansive ratio of CPFA hardened paste was high because of generation of ettringite (AFt), which was influenced by its water to binder ratio (W/A), curing style and grinding of the ash. The paste cured in water had the highest expansive ratio, and grinding of CPFA was beneficial to its volume stability. The hydration products of CPFA detected by X-ray diffraction (XRD) and scanning electron microscopy (SEM) were portlandite, gypsum, AFt and hydrated calcium silicate (C–S–H).</abstract><cop>New York, NY</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.cemconres.2007.03.013</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-2969-8276</orcidid></addata></record> |
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| subjects | Aggregates and other concrete constituents Applied sciences Buildings. Public works CALCIUM OXIDES CALCIUM SILICATES Cement concrete constituents CEMENTING CFBC fly ash CHEMICAL COMPOSITION CIRCULATING SYSTEMS COAL COKE COMBUSTION Concrete additives (fillers, pozzolanic and hydraulic materials) CURING Exact sciences and technology Expansion FLUIDIZED BEDS FLY ASH GRINDING GYPSUM HYDRATION Hydration product Materials MATERIALS SCIENCE PETROLEUM PRODUCTS SCANNING ELECTRON MICROSCOPY Self-cementing SULFUR WATER X-RAY DIFFRACTION |
| title | Self-cementitious properties of fly ashes from CFBC boilers co-firing coal and high-sulphur petroleum coke |
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