Accelerating the reaction kinetics and improving the performance of Na2CO3-activated GGBS mixes
This study aimed to accelerate the reaction kinetics and improve the performance of Na2CO3-activated ground granulated blast-furnace slag (GGBS) via the use of reactive MgO and hydromagnesite seeds. The effect of 3–10% MgO and 0.5–1% seeds on the reaction mechanisms of Na2CO3-activated pastes was ev...
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| Veröffentlicht in: | Cement and concrete research 2019-12, Vol.126, p.105927, Article 105927 |
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| container_title | Cement and concrete research |
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| creator | Dung, N.T. Hooper, T.J.N. Unluer, C. |
| description | This study aimed to accelerate the reaction kinetics and improve the performance of Na2CO3-activated ground granulated blast-furnace slag (GGBS) via the use of reactive MgO and hydromagnesite seeds. The effect of 3–10% MgO and 0.5–1% seeds on the reaction mechanisms of Na2CO3-activated pastes was evaluated by pH, isothermal calorimetry and setting time measurements. Compressive strength results were used to assess the mechanical performance of the Na2CO3-activated GGBS concrete. A thorough investigation involving XRD, TG-DTG, and 29Si and 27Al solid-state NMR was performed to investigate the evolution of different phases. The inclusion of MgO and seeds promoted the removal of CO32−, increasing the pH and accelerating the dissolution of GGBS. The improved reaction kinetics via the use of MgO and seeds led to samples with shortened setting times, increased hydration and enhanced performance (43 vs. 14 MPa at 28 days) when compared to the control sample. |
| doi_str_mv | 10.1016/j.cemconres.2019.105927 |
| format | Article |
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The effect of 3–10% MgO and 0.5–1% seeds on the reaction mechanisms of Na2CO3-activated pastes was evaluated by pH, isothermal calorimetry and setting time measurements. Compressive strength results were used to assess the mechanical performance of the Na2CO3-activated GGBS concrete. A thorough investigation involving XRD, TG-DTG, and 29Si and 27Al solid-state NMR was performed to investigate the evolution of different phases. The inclusion of MgO and seeds promoted the removal of CO32−, increasing the pH and accelerating the dissolution of GGBS. The improved reaction kinetics via the use of MgO and seeds led to samples with shortened setting times, increased hydration and enhanced performance (43 vs. 14 MPa at 28 days) when compared to the control sample.</description><identifier>ISSN: 0008-8846</identifier><identifier>EISSN: 1873-3948</identifier><identifier>DOI: 10.1016/j.cemconres.2019.105927</identifier><language>eng</language><publisher>Elmsford: Elsevier Ltd</publisher><subject>Acceleration (A) ; Basic magnesium carbonate ; Blast furnace practice ; Compressive strength ; Compressive strength (C) ; GGBS ; Granulated blast furnace slag (D) ; Granulation ; Kinetics (A) ; Magnesium oxide ; Mechanical properties ; MgO (D) ; NMR ; Nuclear magnetic resonance ; Pastes ; Performance enhancement ; Reaction kinetics ; Reaction mechanisms ; Sodium carbonate ; Time compression</subject><ispartof>Cement and concrete research, 2019-12, Vol.126, p.105927, Article 105927</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright Elsevier BV Dec 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c382t-8ac51646a7627f58227b477071a2d902fa4436af9b379406d4f8a9a2ba543a543</citedby><cites>FETCH-LOGICAL-c382t-8ac51646a7627f58227b477071a2d902fa4436af9b379406d4f8a9a2ba543a543</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0008884619303552$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Dung, N.T.</creatorcontrib><creatorcontrib>Hooper, T.J.N.</creatorcontrib><creatorcontrib>Unluer, C.</creatorcontrib><title>Accelerating the reaction kinetics and improving the performance of Na2CO3-activated GGBS mixes</title><title>Cement and concrete research</title><description>This study aimed to accelerate the reaction kinetics and improve the performance of Na2CO3-activated ground granulated blast-furnace slag (GGBS) via the use of reactive MgO and hydromagnesite seeds. The effect of 3–10% MgO and 0.5–1% seeds on the reaction mechanisms of Na2CO3-activated pastes was evaluated by pH, isothermal calorimetry and setting time measurements. Compressive strength results were used to assess the mechanical performance of the Na2CO3-activated GGBS concrete. A thorough investigation involving XRD, TG-DTG, and 29Si and 27Al solid-state NMR was performed to investigate the evolution of different phases. The inclusion of MgO and seeds promoted the removal of CO32−, increasing the pH and accelerating the dissolution of GGBS. The improved reaction kinetics via the use of MgO and seeds led to samples with shortened setting times, increased hydration and enhanced performance (43 vs. 14 MPa at 28 days) when compared to the control sample.</description><subject>Acceleration (A)</subject><subject>Basic magnesium carbonate</subject><subject>Blast furnace practice</subject><subject>Compressive strength</subject><subject>Compressive strength (C)</subject><subject>GGBS</subject><subject>Granulated blast furnace slag (D)</subject><subject>Granulation</subject><subject>Kinetics (A)</subject><subject>Magnesium oxide</subject><subject>Mechanical properties</subject><subject>MgO (D)</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><subject>Pastes</subject><subject>Performance enhancement</subject><subject>Reaction kinetics</subject><subject>Reaction mechanisms</subject><subject>Sodium carbonate</subject><subject>Time compression</subject><issn>0008-8846</issn><issn>1873-3948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFkMtOwzAQRS0EEqXwDVhineJXYntZKihIFV0Aa8t1JuDQJMVOK_h7HAXYshiNZnTvPA5Cl5TMKKHFdT1z0LiuDRBnjFCdurlm8ghNqJI841qoYzQhhKhMKVGcorMY61QWjKsJMnPnYAvB9r59xf0b4ADW9b5r8btvofcuYtuW2De70B1-NTsIVRca2zrAXYUfLVuseTb4DraHEi-XN0-48Z8Qz9FJZbcRLn7yFL3c3T4v7rPVevmwmK8yxxXrM2VdTgtRWFkwWeWKMbkRUhJJLSs1YZUVghe20hsutSBFKSpltWUbmws-xBRdjXPTmR97iL2pu31o00rDONMykaE6qeSocqGLMUBldsE3NnwZSsxA09Tmj6YZaJqRZnLORyekJw4egonOQ_q_9AFcb8rO_zvjGz4EgQs</recordid><startdate>20191201</startdate><enddate>20191201</enddate><creator>Dung, N.T.</creator><creator>Hooper, T.J.N.</creator><creator>Unluer, C.</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope></search><sort><creationdate>20191201</creationdate><title>Accelerating the reaction kinetics and improving the performance of Na2CO3-activated GGBS mixes</title><author>Dung, N.T. ; Hooper, T.J.N. ; Unluer, C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c382t-8ac51646a7627f58227b477071a2d902fa4436af9b379406d4f8a9a2ba543a543</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Acceleration (A)</topic><topic>Basic magnesium carbonate</topic><topic>Blast furnace practice</topic><topic>Compressive strength</topic><topic>Compressive strength (C)</topic><topic>GGBS</topic><topic>Granulated blast furnace slag (D)</topic><topic>Granulation</topic><topic>Kinetics (A)</topic><topic>Magnesium oxide</topic><topic>Mechanical properties</topic><topic>MgO (D)</topic><topic>NMR</topic><topic>Nuclear magnetic resonance</topic><topic>Pastes</topic><topic>Performance enhancement</topic><topic>Reaction kinetics</topic><topic>Reaction mechanisms</topic><topic>Sodium carbonate</topic><topic>Time compression</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dung, N.T.</creatorcontrib><creatorcontrib>Hooper, T.J.N.</creatorcontrib><creatorcontrib>Unluer, C.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Cement and concrete research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dung, N.T.</au><au>Hooper, T.J.N.</au><au>Unluer, C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Accelerating the reaction kinetics and improving the performance of Na2CO3-activated GGBS mixes</atitle><jtitle>Cement and concrete research</jtitle><date>2019-12-01</date><risdate>2019</risdate><volume>126</volume><spage>105927</spage><pages>105927-</pages><artnum>105927</artnum><issn>0008-8846</issn><eissn>1873-3948</eissn><abstract>This study aimed to accelerate the reaction kinetics and improve the performance of Na2CO3-activated ground granulated blast-furnace slag (GGBS) via the use of reactive MgO and hydromagnesite seeds. The effect of 3–10% MgO and 0.5–1% seeds on the reaction mechanisms of Na2CO3-activated pastes was evaluated by pH, isothermal calorimetry and setting time measurements. Compressive strength results were used to assess the mechanical performance of the Na2CO3-activated GGBS concrete. A thorough investigation involving XRD, TG-DTG, and 29Si and 27Al solid-state NMR was performed to investigate the evolution of different phases. The inclusion of MgO and seeds promoted the removal of CO32−, increasing the pH and accelerating the dissolution of GGBS. The improved reaction kinetics via the use of MgO and seeds led to samples with shortened setting times, increased hydration and enhanced performance (43 vs. 14 MPa at 28 days) when compared to the control sample.</abstract><cop>Elmsford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.cemconres.2019.105927</doi></addata></record> |
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| ispartof | Cement and concrete research, 2019-12, Vol.126, p.105927, Article 105927 |
| issn | 0008-8846 1873-3948 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Acceleration (A) Basic magnesium carbonate Blast furnace practice Compressive strength Compressive strength (C) GGBS Granulated blast furnace slag (D) Granulation Kinetics (A) Magnesium oxide Mechanical properties MgO (D) NMR Nuclear magnetic resonance Pastes Performance enhancement Reaction kinetics Reaction mechanisms Sodium carbonate Time compression |
| title | Accelerating the reaction kinetics and improving the performance of Na2CO3-activated GGBS mixes |
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