An X-ray photoelectron spectroscopy study of the hydration of C2S thin films
Electron-beam evaporation was used to produce thin films of β-dicalcium silicate. Chemical and mineralogical compositions were characterized by X-ray photoelectron spectroscopy (XPS) and grazing-angle X-ray diffraction (GAXRD), respectively. Results show that no fractionation occurs during evaporati...
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| Veröffentlicht in: | Cement and concrete research 2014-06, Vol.60, p.83-90 |
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| creator | Rheinheimer, Vanessa Casanova, Ignasi |
| description | Electron-beam evaporation was used to produce thin films of β-dicalcium silicate. Chemical and mineralogical compositions were characterized by X-ray photoelectron spectroscopy (XPS) and grazing-angle X-ray diffraction (GAXRD), respectively. Results show that no fractionation occurs during evaporation and isostructural condensation of the material as synthesized films have the same composition as the initial bulk material. Samples were gradually hydrated under saturated water spray conditions and analyzed with XPS. Polymerization of the silicate chains due to hydration, and subsequent formation of C-S-H, has been monitored through evaluation of energy shifts on characteristic silicon peaks. Quantitative analyses show changes on the surface by the reduction of the Ca/Si ratio and an increase on the difference between binding energies of bridging and non-bridging oxygen. Finally, SEM/FIB observation shows clear differences between the surface and cross section of the initial sample and the reacted sample. |
| doi_str_mv | 10.1016/j.cemconres.2014.03.005 |
| format | Article |
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Chemical and mineralogical compositions were characterized by X-ray photoelectron spectroscopy (XPS) and grazing-angle X-ray diffraction (GAXRD), respectively. Results show that no fractionation occurs during evaporation and isostructural condensation of the material as synthesized films have the same composition as the initial bulk material. Samples were gradually hydrated under saturated water spray conditions and analyzed with XPS. Polymerization of the silicate chains due to hydration, and subsequent formation of C-S-H, has been monitored through evaluation of energy shifts on characteristic silicon peaks. Quantitative analyses show changes on the surface by the reduction of the Ca/Si ratio and an increase on the difference between binding energies of bridging and non-bridging oxygen. 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Chemical and mineralogical compositions were characterized by X-ray photoelectron spectroscopy (XPS) and grazing-angle X-ray diffraction (GAXRD), respectively. Results show that no fractionation occurs during evaporation and isostructural condensation of the material as synthesized films have the same composition as the initial bulk material. Samples were gradually hydrated under saturated water spray conditions and analyzed with XPS. Polymerization of the silicate chains due to hydration, and subsequent formation of C-S-H, has been monitored through evaluation of energy shifts on characteristic silicon peaks. Quantitative analyses show changes on the surface by the reduction of the Ca/Si ratio and an increase on the difference between binding energies of bridging and non-bridging oxygen. Finally, SEM/FIB observation shows clear differences between the surface and cross section of the initial sample and the reacted sample.</description><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>C-S-H</subject><subject>Cement</subject><subject>Cement concrete constituents</subject><subject>Cements</subject><subject>Ciment</subject><subject>Enginyeria civil</subject><subject>Exact sciences and technology</subject><subject>Hidratació</subject><subject>Hydration</subject><subject>Materials</subject><subject>Materials i estructures</subject><subject>Materials i estructures de formigó</subject><subject>Properties of anhydrous and hydrated cement, test methods</subject><subject>Thin films</subject><subject>X-ray photoelectron spectroscopy</subject><subject>ß-Dicalcium silicate</subject><subject>Àrees temàtiques de la UPC</subject><subject>β-Dicalcium silicate</subject><issn>0008-8846</issn><issn>1873-3948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>XX2</sourceid><recordid>eNqFkE1LAzEQhoMoWKu_wb143HXy0U32WIpfUPCggreQzs7SlHZ3SbbC_ntTK_UoTJjMME8m78vYLYeCAy_vNwXSDrs2UCwEcFWALABmZ2zCjZa5rJQ5ZxMAMLkxqrxkVzFuUlkKaSZsOW-zzzy4MevX3dDRlnAIXZvF_ucSsevHLA77esy6JhvWlK3HOrjBp5nUWIi31PRt1vjtLl6zi8ZtI9385in7eHx4Xzzny9enl8V8maPkesi1XAHUmleuBHIrqaFutFkZVFhyWZWKOyMqbXRJmAJUQ9wp0cycmaGbkZwyfnwX4x5tIKSAbrCd83_F4QjQwgphSq4So3-ZpCoGamwf_M6F0XKwByPtxp6MtAcjLUibjEzk3ZHsXUS3bYJr0ccTLoySspKHDfPjHCXpX56CjeipRap9-tVg687_u-sb1nyNjQ</recordid><startdate>20140601</startdate><enddate>20140601</enddate><creator>Rheinheimer, Vanessa</creator><creator>Casanova, Ignasi</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>XX2</scope></search><sort><creationdate>20140601</creationdate><title>An X-ray photoelectron spectroscopy study of the hydration of C2S thin films</title><author>Rheinheimer, Vanessa ; Casanova, Ignasi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c317t-73b00d719a60eab370df78b8c4c6139641a8297876ec6ec04fe1a42f5a85ca5e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied sciences</topic><topic>Buildings. Public works</topic><topic>C-S-H</topic><topic>Cement</topic><topic>Cement concrete constituents</topic><topic>Cements</topic><topic>Ciment</topic><topic>Enginyeria civil</topic><topic>Exact sciences and technology</topic><topic>Hidratació</topic><topic>Hydration</topic><topic>Materials</topic><topic>Materials i estructures</topic><topic>Materials i estructures de formigó</topic><topic>Properties of anhydrous and hydrated cement, test methods</topic><topic>Thin films</topic><topic>X-ray photoelectron spectroscopy</topic><topic>ß-Dicalcium silicate</topic><topic>Àrees temàtiques de la UPC</topic><topic>β-Dicalcium silicate</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rheinheimer, Vanessa</creatorcontrib><creatorcontrib>Casanova, Ignasi</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Recercat</collection><jtitle>Cement and concrete research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rheinheimer, Vanessa</au><au>Casanova, Ignasi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An X-ray photoelectron spectroscopy study of the hydration of C2S thin films</atitle><jtitle>Cement and concrete research</jtitle><date>2014-06-01</date><risdate>2014</risdate><volume>60</volume><spage>83</spage><epage>90</epage><pages>83-90</pages><issn>0008-8846</issn><eissn>1873-3948</eissn><coden>CCNRAI</coden><abstract>Electron-beam evaporation was used to produce thin films of β-dicalcium silicate. 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| ispartof | Cement and concrete research, 2014-06, Vol.60, p.83-90 |
| issn | 0008-8846 1873-3948 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present); Recercat |
| subjects | Applied sciences Buildings. Public works C-S-H Cement Cement concrete constituents Cements Ciment Enginyeria civil Exact sciences and technology Hidratació Hydration Materials Materials i estructures Materials i estructures de formigó Properties of anhydrous and hydrated cement, test methods Thin films X-ray photoelectron spectroscopy ß-Dicalcium silicate Àrees temàtiques de la UPC β-Dicalcium silicate |
| title | An X-ray photoelectron spectroscopy study of the hydration of C2S thin films |
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