Study on the high-temperature behavior and rehydration characteristics of hardened cement paste
Summary The high‐temperature behavior and rehydration characteristics of the hardened cement paste and their mechanisms have been studied in this paper. X‐ray diffraction and thermogravimetry are used to establish the effect of elevated temperatures on the mineralogical changes that occurred in the...
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| Veröffentlicht in: | Fire and materials 2015-12, Vol.39 (8), p.741-750 |
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| container_title | Fire and materials |
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| creator | Wang, Guiming Zhang, Chao Zhang, Bin Li, Qiu Shui, Zhonghe |
| description | Summary
The high‐temperature behavior and rehydration characteristics of the hardened cement paste and their mechanisms have been studied in this paper. X‐ray diffraction and thermogravimetry are used to establish the effect of elevated temperatures on the mineralogical changes that occurred in the hardened cement paste. The change of microstructure was characterized by scanning electron microscopy. The results showed that with the temperature increased, the compressive strength of hardened cement paste first increased and then decreased. According to micromeasurements, at 400°C, the porosity and average pore diameter of hardened cement paste increased slightly, while at 800°C, the porosity and average pore diameter of hardened cement paste increased sharply. When hardened cement paste was cured after exposing to 400°C, its pore structure and phase composition had no change, while when hardened cement paste was cured after exposing to 800°C, there are new hydration products, and its pore structure may be finer, but it cannot fully recover to the original state. Copyright © 2014 John Wiley & Sons, Ltd. |
| doi_str_mv | 10.1002/fam.2269 |
| format | Article |
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The high‐temperature behavior and rehydration characteristics of the hardened cement paste and their mechanisms have been studied in this paper. X‐ray diffraction and thermogravimetry are used to establish the effect of elevated temperatures on the mineralogical changes that occurred in the hardened cement paste. The change of microstructure was characterized by scanning electron microscopy. The results showed that with the temperature increased, the compressive strength of hardened cement paste first increased and then decreased. According to micromeasurements, at 400°C, the porosity and average pore diameter of hardened cement paste increased slightly, while at 800°C, the porosity and average pore diameter of hardened cement paste increased sharply. When hardened cement paste was cured after exposing to 400°C, its pore structure and phase composition had no change, while when hardened cement paste was cured after exposing to 800°C, there are new hydration products, and its pore structure may be finer, but it cannot fully recover to the original state. Copyright © 2014 John Wiley & Sons, Ltd.</description><identifier>ISSN: 0308-0501</identifier><identifier>EISSN: 1099-1018</identifier><identifier>DOI: 10.1002/fam.2269</identifier><identifier>CODEN: FMATDV</identifier><language>eng</language><publisher>Bognor Regis: Blackwell Publishing Ltd</publisher><subject>Cements ; Diffraction ; Exposure ; Fires ; hardened cement paste ; Hardening ; high-temperature behavior ; Hydration ; Pastes ; Porosity ; rehydration repair</subject><ispartof>Fire and materials, 2015-12, Vol.39 (8), p.741-750</ispartof><rights>Copyright © 2014 John Wiley & Sons, Ltd.</rights><rights>Copyright © 2015 John Wiley & Sons, Ltd.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4309-1597cbb6bbd4417b7898ac12f1668a6865066ebdac2b27f214c6ab3fd1d3c1ba3</citedby><cites>FETCH-LOGICAL-c4309-1597cbb6bbd4417b7898ac12f1668a6865066ebdac2b27f214c6ab3fd1d3c1ba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Ffam.2269$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Ffam.2269$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Wang, Guiming</creatorcontrib><creatorcontrib>Zhang, Chao</creatorcontrib><creatorcontrib>Zhang, Bin</creatorcontrib><creatorcontrib>Li, Qiu</creatorcontrib><creatorcontrib>Shui, Zhonghe</creatorcontrib><title>Study on the high-temperature behavior and rehydration characteristics of hardened cement paste</title><title>Fire and materials</title><addtitle>Fire Mater</addtitle><description>Summary
The high‐temperature behavior and rehydration characteristics of the hardened cement paste and their mechanisms have been studied in this paper. X‐ray diffraction and thermogravimetry are used to establish the effect of elevated temperatures on the mineralogical changes that occurred in the hardened cement paste. The change of microstructure was characterized by scanning electron microscopy. The results showed that with the temperature increased, the compressive strength of hardened cement paste first increased and then decreased. According to micromeasurements, at 400°C, the porosity and average pore diameter of hardened cement paste increased slightly, while at 800°C, the porosity and average pore diameter of hardened cement paste increased sharply. When hardened cement paste was cured after exposing to 400°C, its pore structure and phase composition had no change, while when hardened cement paste was cured after exposing to 800°C, there are new hydration products, and its pore structure may be finer, but it cannot fully recover to the original state. Copyright © 2014 John Wiley & Sons, Ltd.</description><subject>Cements</subject><subject>Diffraction</subject><subject>Exposure</subject><subject>Fires</subject><subject>hardened cement paste</subject><subject>Hardening</subject><subject>high-temperature behavior</subject><subject>Hydration</subject><subject>Pastes</subject><subject>Porosity</subject><subject>rehydration repair</subject><issn>0308-0501</issn><issn>1099-1018</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp10G1LHDEQB_AgLXi1hX6EgG98szpJ9pLsSz3qVbBK6YMvQx5m3dXb3WuStb1v34giVChhCMz8GIY_IR8ZHDMAftLa4Zhz2eyRBYOmqRgw_YYsQICuYAlsn7xL6Q4AtFZyQcy3PIcdnUaaO6Rdf9tVGYctRpvniNRhZx_6KVI7Bhqx24Uy6Iv2nY3WZ4x9yr1PdGpp6QQcMVCPA46Zbm3K-J68be0m4Yfn_4D8OP_0ffW5urxeX6xOLytfCyhXLhvlnZPOhbpmyindaOsZb5mU2kotlyAlumA9d1y1nNVeWifawILwzFlxQI6e9m7j9GvGlM3QJ4-bjR1xmpNhSgFvZHmFHr6id9Mcx3JdUVw3QtSlXhb6OKUUsTXb2A827gwD85i0KUmbx6QLrZ7o736Du_86c3765V9fssM_L97GeyOVUEtzc7U2q7OfsF5_FeZG_AVOv471</recordid><startdate>201512</startdate><enddate>201512</enddate><creator>Wang, Guiming</creator><creator>Zhang, Chao</creator><creator>Zhang, Bin</creator><creator>Li, Qiu</creator><creator>Shui, Zhonghe</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7T2</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope></search><sort><creationdate>201512</creationdate><title>Study on the high-temperature behavior and rehydration characteristics of hardened cement paste</title><author>Wang, Guiming ; Zhang, Chao ; Zhang, Bin ; Li, Qiu ; Shui, Zhonghe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4309-1597cbb6bbd4417b7898ac12f1668a6865066ebdac2b27f214c6ab3fd1d3c1ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Cements</topic><topic>Diffraction</topic><topic>Exposure</topic><topic>Fires</topic><topic>hardened cement paste</topic><topic>Hardening</topic><topic>high-temperature behavior</topic><topic>Hydration</topic><topic>Pastes</topic><topic>Porosity</topic><topic>rehydration repair</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Guiming</creatorcontrib><creatorcontrib>Zhang, Chao</creatorcontrib><creatorcontrib>Zhang, Bin</creatorcontrib><creatorcontrib>Li, Qiu</creatorcontrib><creatorcontrib>Shui, Zhonghe</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Health and Safety Science Abstracts (Full archive)</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><jtitle>Fire and materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Guiming</au><au>Zhang, Chao</au><au>Zhang, Bin</au><au>Li, Qiu</au><au>Shui, Zhonghe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study on the high-temperature behavior and rehydration characteristics of hardened cement paste</atitle><jtitle>Fire and materials</jtitle><addtitle>Fire Mater</addtitle><date>2015-12</date><risdate>2015</risdate><volume>39</volume><issue>8</issue><spage>741</spage><epage>750</epage><pages>741-750</pages><issn>0308-0501</issn><eissn>1099-1018</eissn><coden>FMATDV</coden><abstract>Summary
The high‐temperature behavior and rehydration characteristics of the hardened cement paste and their mechanisms have been studied in this paper. X‐ray diffraction and thermogravimetry are used to establish the effect of elevated temperatures on the mineralogical changes that occurred in the hardened cement paste. The change of microstructure was characterized by scanning electron microscopy. The results showed that with the temperature increased, the compressive strength of hardened cement paste first increased and then decreased. According to micromeasurements, at 400°C, the porosity and average pore diameter of hardened cement paste increased slightly, while at 800°C, the porosity and average pore diameter of hardened cement paste increased sharply. When hardened cement paste was cured after exposing to 400°C, its pore structure and phase composition had no change, while when hardened cement paste was cured after exposing to 800°C, there are new hydration products, and its pore structure may be finer, but it cannot fully recover to the original state. Copyright © 2014 John Wiley & Sons, Ltd.</abstract><cop>Bognor Regis</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/fam.2269</doi><tpages>10</tpages></addata></record> |
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| ispartof | Fire and materials, 2015-12, Vol.39 (8), p.741-750 |
| issn | 0308-0501 1099-1018 |
| language | eng |
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| source | Wiley Online Library - AutoHoldings Journals |
| subjects | Cements Diffraction Exposure Fires hardened cement paste Hardening high-temperature behavior Hydration Pastes Porosity rehydration repair |
| title | Study on the high-temperature behavior and rehydration characteristics of hardened cement paste |
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