Hydration Products and Reactivity of Blast-Furnace Slag Activated by Various Alkalis
Pastes of blast‐furnace slag were cured for up to 90 d using sodium silicate (waterglass), NaOH, and three different mixtures of Na2CO3–Na2SO4–Ca(OH)2 to activate reactions. The highest slag reactivity was observed for NaOH activation and the least for waterglass, although nonevaporable water indica...
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| Veröffentlicht in: | Journal of the American Ceramic Society 2003-12, Vol.86 (12), p.2148-2153 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Escalante-García, Jose I. Fuentes, Antonio F. Gorokhovsky, Alexander Fraire-Luna, Pedro E. Mendoza-Suarez, Guillermo |
| description | Pastes of blast‐furnace slag were cured for up to 90 d using sodium silicate (waterglass), NaOH, and three different mixtures of Na2CO3–Na2SO4–Ca(OH)2 to activate reactions. The highest slag reactivity was observed for NaOH activation and the least for waterglass, although nonevaporable water indicated similar amounts of hydration products formed. The main hydration products found using X‐ray diffractometry in all systems were calcium silicate hydrate (C‐S‐H) and a hydrotalcite‐type phase. Microanalysis was performed on pastes activated using 50% Na2CO3·25% Na2SO4·25% Ca(OH)2, NaOH, and waterglass; the chemical composition of the C‐S‐H in the waterglass case was different relative to the other two alkalis. For all alkaline agents used, the C‐S‐H seemed finely intermixed with a hydrotalcite‐type phase of Mg/Al = 1.82, on average. |
| doi_str_mv | 10.1111/j.1151-2916.2003.tb03623.x |
| format | Article |
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The highest slag reactivity was observed for NaOH activation and the least for waterglass, although nonevaporable water indicated similar amounts of hydration products formed. The main hydration products found using X‐ray diffractometry in all systems were calcium silicate hydrate (C‐S‐H) and a hydrotalcite‐type phase. Microanalysis was performed on pastes activated using 50% Na2CO3·25% Na2SO4·25% Ca(OH)2, NaOH, and waterglass; the chemical composition of the C‐S‐H in the waterglass case was different relative to the other two alkalis. 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The highest slag reactivity was observed for NaOH activation and the least for waterglass, although nonevaporable water indicated similar amounts of hydration products formed. The main hydration products found using X‐ray diffractometry in all systems were calcium silicate hydrate (C‐S‐H) and a hydrotalcite‐type phase. Microanalysis was performed on pastes activated using 50% Na2CO3·25% Na2SO4·25% Ca(OH)2, NaOH, and waterglass; the chemical composition of the C‐S‐H in the waterglass case was different relative to the other two alkalis. For all alkaline agents used, the C‐S‐H seemed finely intermixed with a hydrotalcite‐type phase of Mg/Al = 1.82, on average.</description><subject>Aggregates and other concrete constituents</subject><subject>alkalis/alkaline earths</subject><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>calcium silicate hydrate</subject><subject>Cement concrete constituents</subject><subject>Concrete additives (fillers, pozzolanic and hydraulic materials)</subject><subject>Exact sciences and technology</subject><subject>Materials</subject><subject>slags</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqVkVtvEzEQhS0EEqHwH6xK8LbBl714eSJEvVIVKIU8WuPLIqfubrGdNvvv8SoRlfoEfhlZ8_mcGR-EDimZ03zer3OpaMFaWs8ZIXyeFOE14_PtMzSj1b71HM0IIaxoBCMv0asY1_lKW1HO0PXpaAIkN_T4axjMRqeIoTf4yoJO7t6lEQ8d_uQhpuJ4E3rQFn_38AsvpjYka7Aa8U8IbthEvPA34F18jV504KN9s68H6Mfx0fXytLj4cnK2XFwUuiqpKKBsrKqUEYRyUIoTpmzFOwNamZo0uqwFMGGFENZ0jLcdMUxpbo3gSlNo-AF6t9O9C8PvjY1J3rqorffQ2zyOZE1eXvDy30DS1hk8fAKuh2lrnxmaoYqXk-2HHaTDEGOwnbwL7hbCKCmRUyxyLadY5PT3copF7mOR2_z47d4BogbfBei1i48KFa_auuWZ-7jjHpy34384yPPF8ojRUmSJYifhYrLbvxIQbmTd8KaSq8sTufrc1qurb5eS8z_50bFN</recordid><startdate>200312</startdate><enddate>200312</enddate><creator>Escalante-García, Jose I.</creator><creator>Fuentes, Antonio F.</creator><creator>Gorokhovsky, Alexander</creator><creator>Fraire-Luna, Pedro E.</creator><creator>Mendoza-Suarez, Guillermo</creator><general>American Ceramics Society</general><general>Blackwell</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><scope>8BQ</scope></search><sort><creationdate>200312</creationdate><title>Hydration Products and Reactivity of Blast-Furnace Slag Activated by Various Alkalis</title><author>Escalante-García, Jose I. ; Fuentes, Antonio F. ; Gorokhovsky, Alexander ; Fraire-Luna, Pedro E. ; Mendoza-Suarez, Guillermo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5418-a47eb5bd8013abb302be53fdacbd607c468a28e888edf239f0d2bc3ed83bc1a73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Aggregates and other concrete constituents</topic><topic>alkalis/alkaline earths</topic><topic>Applied sciences</topic><topic>Buildings. Public works</topic><topic>calcium silicate hydrate</topic><topic>Cement concrete constituents</topic><topic>Concrete additives (fillers, pozzolanic and hydraulic materials)</topic><topic>Exact sciences and technology</topic><topic>Materials</topic><topic>slags</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Escalante-García, Jose I.</creatorcontrib><creatorcontrib>Fuentes, Antonio F.</creatorcontrib><creatorcontrib>Gorokhovsky, Alexander</creatorcontrib><creatorcontrib>Fraire-Luna, Pedro E.</creatorcontrib><creatorcontrib>Mendoza-Suarez, Guillermo</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>METADEX</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Escalante-García, Jose I.</au><au>Fuentes, Antonio F.</au><au>Gorokhovsky, Alexander</au><au>Fraire-Luna, Pedro E.</au><au>Mendoza-Suarez, Guillermo</au><au>WCA</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hydration Products and Reactivity of Blast-Furnace Slag Activated by Various Alkalis</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2003-12</date><risdate>2003</risdate><volume>86</volume><issue>12</issue><spage>2148</spage><epage>2153</epage><pages>2148-2153</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><coden>JACTAW</coden><abstract>Pastes of blast‐furnace slag were cured for up to 90 d using sodium silicate (waterglass), NaOH, and three different mixtures of Na2CO3–Na2SO4–Ca(OH)2 to activate reactions. 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| ispartof | Journal of the American Ceramic Society, 2003-12, Vol.86 (12), p.2148-2153 |
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| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Aggregates and other concrete constituents alkalis/alkaline earths Applied sciences Buildings. Public works calcium silicate hydrate Cement concrete constituents Concrete additives (fillers, pozzolanic and hydraulic materials) Exact sciences and technology Materials slags |
| title | Hydration Products and Reactivity of Blast-Furnace Slag Activated by Various Alkalis |
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