X-ray photoelectron spectroscopy of aluminium-substituted tobermorite
We have synthesised 11-Å tobermorite hydrothermally, both pure and with increasing isomorphic substitution of aluminium for silicon. The samples were analysed by X-ray photoelectron spectroscopy (XPS). Aluminium was found, on the basis of its Al 2p binding energies, to be tetrahedrally coordinated....
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| Veröffentlicht in: | Cement and concrete research 2005, Vol.35 (1), p.51-55 |
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| container_title | Cement and concrete research |
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| creator | Black, Leon Stumm, Andreas Garbev, Krassimir Stemmermann, Peter Hallam, Keith R. Allen, Geoffrey C. |
| description | We have synthesised 11-Å tobermorite hydrothermally, both pure and with increasing isomorphic substitution of aluminium for silicon. The samples were analysed by X-ray photoelectron spectroscopy (XPS). Aluminium was found, on the basis of its Al 2p binding energies, to be tetrahedrally coordinated. We observed no changes in Ca/(Si+Al) ratio upon aluminium substitution, implying that charge balancing does not occur via the incorporation of additional calcium into the tobermorite structure. Aluminium substitution into the silicate structure led to a decrease in Si 2p binding energies. This implies one of two alternatives. Firstly, that charge balancing occurs via substitution of OH
− for O
2− in the tobermorite structure. Secondly, the presence of aluminium in the tobermorite structure may negatively influence the degree of silicate polymerisation. Further work is required to determine which of these possibilities is the case. |
| doi_str_mv | 10.1016/j.cemconres.2004.08.005 |
| format | Article |
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− for O
2− in the tobermorite structure. Secondly, the presence of aluminium in the tobermorite structure may negatively influence the degree of silicate polymerisation. Further work is required to determine which of these possibilities is the case.</description><subject>Aluminium substitution</subject><subject>Analysis of cement phases and constituents</subject><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>Cement concrete constituents</subject><subject>Cements</subject><subject>Characterization</subject><subject>Crystal structure</subject><subject>Exact sciences and technology</subject><subject>Materials</subject><subject>Properties of anhydrous and hydrated cement, test methods</subject><subject>Tobermorite</subject><subject>XPS</subject><issn>0008-8846</issn><issn>1873-3948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqNkUtr3TAQRkVoobdJf0O9aXd29fJIXoaQFwS6aSE7IctjoottOZJcuP8-Sm5olslqZuDMDHyHkO-MNowy-LVvHM4uLBFTwymVDdUNpe0J2TGtRC06qT-RHaVU11pL-EK-prQvI3Chd-Tyvo72UK0PIQec0OUYliqtL01yYT1UYazstM1-8dtcp61P2ect41Dl0GOcQ_QZz8jn0U4Jv73WU_L36vLPxU199_v69uL8rnYSulyzHvgwcGeVBa5GZa3SpeuEZIi97tnAlWCug7GTtB-coNDztuMCRMsdd-KU_DzeXWN43DBlM_vkcJrsgmFLhncKGID4ACgEE233PqgBuOb8I6AEDW0B1RF0JcEUcTRr9LONB8OoeTZm9ua_MfNszFBtirGy-eP1hU3OTmO0i_PpbR1ayUCqwp0fOSxR__MYTXIeF4eDj0WcGYJ_99cTa_yxAg</recordid><startdate>2005</startdate><enddate>2005</enddate><creator>Black, Leon</creator><creator>Stumm, Andreas</creator><creator>Garbev, Krassimir</creator><creator>Stemmermann, Peter</creator><creator>Hallam, Keith R.</creator><creator>Allen, Geoffrey C.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>7QQ</scope><scope>JG9</scope><scope>7QF</scope><scope>7SR</scope><scope>8BQ</scope></search><sort><creationdate>2005</creationdate><title>X-ray photoelectron spectroscopy of aluminium-substituted tobermorite</title><author>Black, Leon ; Stumm, Andreas ; Garbev, Krassimir ; Stemmermann, Peter ; Hallam, Keith R. ; Allen, Geoffrey C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c469t-1b62dd2ca7a627f7aa78a629341eeb8b1d2731c96f940bdc306b259236352c2c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Aluminium substitution</topic><topic>Analysis of cement phases and constituents</topic><topic>Applied sciences</topic><topic>Buildings. Public works</topic><topic>Cement concrete constituents</topic><topic>Cements</topic><topic>Characterization</topic><topic>Crystal structure</topic><topic>Exact sciences and technology</topic><topic>Materials</topic><topic>Properties of anhydrous and hydrated cement, test methods</topic><topic>Tobermorite</topic><topic>XPS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Black, Leon</creatorcontrib><creatorcontrib>Stumm, Andreas</creatorcontrib><creatorcontrib>Garbev, Krassimir</creatorcontrib><creatorcontrib>Stemmermann, Peter</creatorcontrib><creatorcontrib>Hallam, Keith R.</creatorcontrib><creatorcontrib>Allen, Geoffrey C.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Materials Research Database</collection><collection>Aluminium Industry Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><jtitle>Cement and concrete research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Black, Leon</au><au>Stumm, Andreas</au><au>Garbev, Krassimir</au><au>Stemmermann, Peter</au><au>Hallam, Keith R.</au><au>Allen, Geoffrey C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>X-ray photoelectron spectroscopy of aluminium-substituted tobermorite</atitle><jtitle>Cement and concrete research</jtitle><date>2005</date><risdate>2005</risdate><volume>35</volume><issue>1</issue><spage>51</spage><epage>55</epage><pages>51-55</pages><issn>0008-8846</issn><eissn>1873-3948</eissn><coden>CCNRAI</coden><abstract>We have synthesised 11-Å tobermorite hydrothermally, both pure and with increasing isomorphic substitution of aluminium for silicon. The samples were analysed by X-ray photoelectron spectroscopy (XPS). Aluminium was found, on the basis of its Al 2p binding energies, to be tetrahedrally coordinated. We observed no changes in Ca/(Si+Al) ratio upon aluminium substitution, implying that charge balancing does not occur via the incorporation of additional calcium into the tobermorite structure. Aluminium substitution into the silicate structure led to a decrease in Si 2p binding energies. This implies one of two alternatives. Firstly, that charge balancing occurs via substitution of OH
− for O
2− in the tobermorite structure. Secondly, the presence of aluminium in the tobermorite structure may negatively influence the degree of silicate polymerisation. Further work is required to determine which of these possibilities is the case.</abstract><cop>New York, NY</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.cemconres.2004.08.005</doi><tpages>5</tpages></addata></record> |
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| subjects | Aluminium substitution Analysis of cement phases and constituents Applied sciences Buildings. Public works Cement concrete constituents Cements Characterization Crystal structure Exact sciences and technology Materials Properties of anhydrous and hydrated cement, test methods Tobermorite XPS |
| title | X-ray photoelectron spectroscopy of aluminium-substituted tobermorite |
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