The Microstructure and Chemistry of Tricalcium Aluminate Hydration [and Discussion]
Electron optical techniques have been used to study the hydration of tricalcium aluminate in the presence of gypsum at various pH levels. Calcium aluminosulphate hydrates are precipitated, which have compositional variations and structures that range from highly disordered to highly ordered. Results...
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| Veröffentlicht in: | Philosophical transactions of the Royal Society of London. Series A: Mathematical and physical sciences 1983-09, Vol.310 (1511), p.105-111 |
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| container_end_page | 111 |
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| container_issue | 1511 |
| container_start_page | 105 |
| container_title | Philosophical transactions of the Royal Society of London. Series A: Mathematical and physical sciences |
| container_volume | 310 |
| creator | Bailey, J. E. Hampson, C. J. Bensted, J. |
| description | Electron optical techniques have been used to study the hydration of tricalcium aluminate in the presence of gypsum at various pH levels. Calcium aluminosulphate hydrates are precipitated, which have compositional variations and structures that range from highly disordered to highly ordered. Results derived from solubility measurements are able to account for the metastability of ettringite with respect to calcium aluminate monosulphate hydrate at pH more than about 12.8. It is shown that the increased surface area of the precipitates formed at high pH is not sufficient to account for the observed increase in solubility. Consideration of the crystal structure of ettringite and the monosulphate hydrate suggests a further proposal for the type of defect occurring in the ettringite structure at high pH. |
| doi_str_mv | 10.1098/rsta.1983.0070 |
| format | Article |
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E. ; Hampson, C. J. ; Bensted, J.</creator><creatorcontrib>Bailey, J. E. ; Hampson, C. J. ; Bensted, J.</creatorcontrib><description>Electron optical techniques have been used to study the hydration of tricalcium aluminate in the presence of gypsum at various pH levels. Calcium aluminosulphate hydrates are precipitated, which have compositional variations and structures that range from highly disordered to highly ordered. Results derived from solubility measurements are able to account for the metastability of ettringite with respect to calcium aluminate monosulphate hydrate at pH more than about 12.8. It is shown that the increased surface area of the precipitates formed at high pH is not sufficient to account for the observed increase in solubility. 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E.</creatorcontrib><creatorcontrib>Hampson, C. J.</creatorcontrib><creatorcontrib>Bensted, J.</creatorcontrib><title>The Microstructure and Chemistry of Tricalcium Aluminate Hydration [and Discussion]</title><title>Philosophical transactions of the Royal Society of London. Series A: Mathematical and physical sciences</title><addtitle>Phil. Trans. R. Soc. Lond. A</addtitle><description>Electron optical techniques have been used to study the hydration of tricalcium aluminate in the presence of gypsum at various pH levels. Calcium aluminosulphate hydrates are precipitated, which have compositional variations and structures that range from highly disordered to highly ordered. Results derived from solubility measurements are able to account for the metastability of ettringite with respect to calcium aluminate monosulphate hydrate at pH more than about 12.8. It is shown that the increased surface area of the precipitates formed at high pH is not sufficient to account for the observed increase in solubility. Consideration of the crystal structure of ettringite and the monosulphate hydrate suggests a further proposal for the type of defect occurring in the ettringite structure at high pH.</description><subject>Aluminates</subject><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>Calcium</subject><subject>Cement concrete constituents</subject><subject>Cements</subject><subject>Crystal structure</subject><subject>Exact sciences and technology</subject><subject>Free energy</subject><subject>Gypsum</subject><subject>Hydrates</subject><subject>Materials</subject><subject>Platelets</subject><subject>Solubility</subject><subject>Surface energy</subject><subject>Teeth</subject><issn>1364-503X</issn><issn>0080-4614</issn><issn>1471-2962</issn><issn>2054-0272</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1983</creationdate><recordtype>article</recordtype><recordid>eNp9UM2L1DAUL6Lgunr14KkHrx3fa9KmOckwrq6wIrgjCCIhTVInQ6ctSap0__pNW1lcxD3l5b3f13tJ8hJhg8CrN84HuUFekQ0Ag0fJGVKGWc7L_HGsSUmzAsi3p8kz748AiGWRnyXX-4NJP1nleh_cqMLoTCo7ne4O5mRja0r7Jt07q2Sr7HhKt-14sp0MJr2ctJPB9l36fSa8s16N3sf_j-fJk0a23rz4854nX99f7HeX2dXnDx9326tM0bIMWQ05JzljFSs4xRo15YU2vGoqzQveoK4NFMowTkHXtCnBsJpVEjQ3OqfIyHmyWXXn9N6ZRgzOnqSbBIKYTyLmk4j5JGI-SSS8XgmD9HGhxslOWX_HmtMAFhFGVpjrp5i_V9aESRz70XXx-39x_xDry_V-i5zQXwTBYoEooIoloyUScWOHRW4GiNgV1vvRiAV23-Zf11er69GH3t2tQqJuFYdv1-HB_jz8ts6Ie9kWKdV3wXRhcV38EArRjG0rBt1EBXhQoZ-GqPE3l9wCI_nJig</recordid><startdate>19830924</startdate><enddate>19830924</enddate><creator>Bailey, J. 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Public works</topic><topic>Calcium</topic><topic>Cement concrete constituents</topic><topic>Cements</topic><topic>Crystal structure</topic><topic>Exact sciences and technology</topic><topic>Free energy</topic><topic>Gypsum</topic><topic>Hydrates</topic><topic>Materials</topic><topic>Platelets</topic><topic>Solubility</topic><topic>Surface energy</topic><topic>Teeth</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bailey, J. E.</creatorcontrib><creatorcontrib>Hampson, C. J.</creatorcontrib><creatorcontrib>Bensted, J.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Philosophical transactions of the Royal Society of London. Series A: Mathematical and physical sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bailey, J. E.</au><au>Hampson, C. J.</au><au>Bensted, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Microstructure and Chemistry of Tricalcium Aluminate Hydration [and Discussion]</atitle><jtitle>Philosophical transactions of the Royal Society of London. Series A: Mathematical and physical sciences</jtitle><stitle>Phil. Trans. R. Soc. Lond. A</stitle><date>1983-09-24</date><risdate>1983</risdate><volume>310</volume><issue>1511</issue><spage>105</spage><epage>111</epage><pages>105-111</pages><issn>1364-503X</issn><issn>0080-4614</issn><eissn>1471-2962</eissn><eissn>2054-0272</eissn><coden>PTRMAD</coden><abstract>Electron optical techniques have been used to study the hydration of tricalcium aluminate in the presence of gypsum at various pH levels. Calcium aluminosulphate hydrates are precipitated, which have compositional variations and structures that range from highly disordered to highly ordered. Results derived from solubility measurements are able to account for the metastability of ettringite with respect to calcium aluminate monosulphate hydrate at pH more than about 12.8. It is shown that the increased surface area of the precipitates formed at high pH is not sufficient to account for the observed increase in solubility. Consideration of the crystal structure of ettringite and the monosulphate hydrate suggests a further proposal for the type of defect occurring in the ettringite structure at high pH.</abstract><cop>London</cop><pub>The Royal Society</pub><doi>10.1098/rsta.1983.0070</doi><tpages>7</tpages></addata></record> |
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| ispartof | Philosophical transactions of the Royal Society of London. Series A: Mathematical and physical sciences, 1983-09, Vol.310 (1511), p.105-111 |
| issn | 1364-503X 0080-4614 1471-2962 2054-0272 |
| language | eng |
| recordid | cdi_crossref_primary_10_1098_rsta_1983_0070 |
| source | JSTOR Mathematics & Statistics; JSTOR Archive Collection A-Z Listing |
| subjects | Aluminates Applied sciences Buildings. Public works Calcium Cement concrete constituents Cements Crystal structure Exact sciences and technology Free energy Gypsum Hydrates Materials Platelets Solubility Surface energy Teeth |
| title | The Microstructure and Chemistry of Tricalcium Aluminate Hydration [and Discussion] |
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