The Influence of Activator Composition on the Strength, Shrinkage and Chloride Migration Resistance of Alkali-Activated Slag Mortars
Alkali-activated slag materials are known for their high chloride penetration resistance. This makes them potentially applicable as repair systems for damaged steel-reinforced concrete structures, which are exposed to chloride attack. For this purpose, the influence of the activator composition, i.e...
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| Veröffentlicht in: | Key engineering materials 2018, Vol.761, p.61-64 |
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| creator | Hu, Nan Jie Hüsken, Götz Gluth, Gregor J.G. Kühne, Hans Carsten |
| description | Alkali-activated slag materials are known for their high chloride penetration resistance. This makes them potentially applicable as repair systems for damaged steel-reinforced concrete structures, which are exposed to chloride attack. For this purpose, the influence of the activator composition, i.e. the SiO2 and Na2O concentration of the alkaline solution on a) the compressive strength, b) shrinkage and mass change and c) the resistance against chloride penetration of four alkali-activated slag mortars (AASM) were studied. An ordinary Portland cement-based mortar was used as the reference sample. Increasing SiO2 and Na2O concentrations increased the strength, shrinkage and mass loss of the AASMs. The resistance of the mortars against chloride penetration was evaluated using the non-steady-state migration coefficient Dnssm obtained from NT BUILD 492. The results indicate that the Dnssm is related to differences in the pore solution of the AASMs rather than to differences in their microstructure. An upcoming study of the authors is going to evaluate this hypothesis by the accelerated chloride penetration (diffusion) test. |
| doi_str_mv | 10.4028/www.scientific.net/KEM.761.61 |
| format | Article |
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This makes them potentially applicable as repair systems for damaged steel-reinforced concrete structures, which are exposed to chloride attack. For this purpose, the influence of the activator composition, i.e. the SiO2 and Na2O concentration of the alkaline solution on a) the compressive strength, b) shrinkage and mass change and c) the resistance against chloride penetration of four alkali-activated slag mortars (AASM) were studied. An ordinary Portland cement-based mortar was used as the reference sample. Increasing SiO2 and Na2O concentrations increased the strength, shrinkage and mass loss of the AASMs. The resistance of the mortars against chloride penetration was evaluated using the non-steady-state migration coefficient Dnssm obtained from NT BUILD 492. The results indicate that the Dnssm is related to differences in the pore solution of the AASMs rather than to differences in their microstructure. An upcoming study of the authors is going to evaluate this hypothesis by the accelerated chloride penetration (diffusion) test.</description><identifier>ISSN: 1013-9826</identifier><identifier>ISSN: 1662-9795</identifier><identifier>EISSN: 1662-9795</identifier><identifier>DOI: 10.4028/www.scientific.net/KEM.761.61</identifier><language>eng</language><publisher>Zurich: Trans Tech Publications Ltd</publisher><subject>Accelerated tests ; Chloride ; Chloride resistance ; Composition ; Compressive strength ; Concrete structures ; Migration ; Mortars (material) ; Penetration ; Penetration resistance ; Portland cements ; Reinforced concrete ; Reinforcing steels ; Shrinkage ; Silicon dioxide ; Slag ; Steel structures ; Structural damage</subject><ispartof>Key engineering materials, 2018, Vol.761, p.61-64</ispartof><rights>2018 Trans Tech Publications Ltd</rights><rights>Copyright Trans Tech Publications Ltd. Jan 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3071-e7dba311e025e1afec3cb5b4185fb3ae0252dead873a431107b0f20b322bd43b3</citedby><cites>FETCH-LOGICAL-c3071-e7dba311e025e1afec3cb5b4185fb3ae0252dead873a431107b0f20b322bd43b3</cites><orcidid>0000-0002-1463-0308</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttps://www.scientific.net/Image/TitleCover/4446?width=600</thumbnail><link.rule.ids>314,780,784,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>Hu, Nan Jie</creatorcontrib><creatorcontrib>Hüsken, Götz</creatorcontrib><creatorcontrib>Gluth, Gregor J.G.</creatorcontrib><creatorcontrib>Kühne, Hans Carsten</creatorcontrib><title>The Influence of Activator Composition on the Strength, Shrinkage and Chloride Migration Resistance of Alkali-Activated Slag Mortars</title><title>Key engineering materials</title><description>Alkali-activated slag materials are known for their high chloride penetration resistance. This makes them potentially applicable as repair systems for damaged steel-reinforced concrete structures, which are exposed to chloride attack. For this purpose, the influence of the activator composition, i.e. the SiO2 and Na2O concentration of the alkaline solution on a) the compressive strength, b) shrinkage and mass change and c) the resistance against chloride penetration of four alkali-activated slag mortars (AASM) were studied. An ordinary Portland cement-based mortar was used as the reference sample. Increasing SiO2 and Na2O concentrations increased the strength, shrinkage and mass loss of the AASMs. The resistance of the mortars against chloride penetration was evaluated using the non-steady-state migration coefficient Dnssm obtained from NT BUILD 492. The results indicate that the Dnssm is related to differences in the pore solution of the AASMs rather than to differences in their microstructure. An upcoming study of the authors is going to evaluate this hypothesis by the accelerated chloride penetration (diffusion) test.</description><subject>Accelerated tests</subject><subject>Chloride</subject><subject>Chloride resistance</subject><subject>Composition</subject><subject>Compressive strength</subject><subject>Concrete structures</subject><subject>Migration</subject><subject>Mortars (material)</subject><subject>Penetration</subject><subject>Penetration resistance</subject><subject>Portland cements</subject><subject>Reinforced concrete</subject><subject>Reinforcing steels</subject><subject>Shrinkage</subject><subject>Silicon dioxide</subject><subject>Slag</subject><subject>Steel structures</subject><subject>Structural damage</subject><issn>1013-9826</issn><issn>1662-9795</issn><issn>1662-9795</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqNkEtLAzEQxxdR8PkdAuLNXfPY50FESn1gi2D1HLLZ2d3UNalJavHuBze1Sq_CwAzD_wG_KDojOEkxLS9Wq1XipALtVatkosFfPIynSZGTJCc70QHJcxpXRZXthhsTFlclzfejQ-fmGDNSkuwg-nruAd3rdliCloBMi66lVx_CG4tG5m1hnPLKaBTGB-XMW9Cd78_RrLdKv4oOkNANGvWDsaoBNFWdFT-OJ3DKefGXOryKQcW_4dCg2SA6NDXWC-uOo71WDA5OfvdR9HIzfh7dxZPH2_vR9SSWDBckhqKpBSMEMM2AiBYkk3VWp6TM2pqJ9Zs2IJqyYCINOlzUuKW4ZpTWTcpqdhSdbnIX1rwvwXk-N0urQyWnpKpwkeU0C6rLjUpa45yFli-sehP2kxPM1-B5AM-34HkAzwN4HsDznAT_1cbvrdDOg-y3Nf9L-AYtwpae</recordid><startdate>2018</startdate><enddate>2018</enddate><creator>Hu, Nan Jie</creator><creator>Hüsken, Götz</creator><creator>Gluth, Gregor J.G.</creator><creator>Kühne, Hans Carsten</creator><general>Trans Tech Publications Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>F28</scope><scope>FR3</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><orcidid>https://orcid.org/0000-0002-1463-0308</orcidid></search><sort><creationdate>2018</creationdate><title>The Influence of Activator Composition on the Strength, Shrinkage and Chloride Migration Resistance of Alkali-Activated Slag Mortars</title><author>Hu, Nan Jie ; Hüsken, Götz ; Gluth, Gregor J.G. ; Kühne, Hans Carsten</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3071-e7dba311e025e1afec3cb5b4185fb3ae0252dead873a431107b0f20b322bd43b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Accelerated tests</topic><topic>Chloride</topic><topic>Chloride resistance</topic><topic>Composition</topic><topic>Compressive strength</topic><topic>Concrete structures</topic><topic>Migration</topic><topic>Mortars (material)</topic><topic>Penetration</topic><topic>Penetration resistance</topic><topic>Portland cements</topic><topic>Reinforced concrete</topic><topic>Reinforcing steels</topic><topic>Shrinkage</topic><topic>Silicon dioxide</topic><topic>Slag</topic><topic>Steel structures</topic><topic>Structural damage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hu, Nan Jie</creatorcontrib><creatorcontrib>Hüsken, Götz</creatorcontrib><creatorcontrib>Gluth, Gregor J.G.</creatorcontrib><creatorcontrib>Kühne, Hans Carsten</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><jtitle>Key engineering materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hu, Nan Jie</au><au>Hüsken, Götz</au><au>Gluth, Gregor J.G.</au><au>Kühne, Hans Carsten</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Influence of Activator Composition on the Strength, Shrinkage and Chloride Migration Resistance of Alkali-Activated Slag Mortars</atitle><jtitle>Key engineering materials</jtitle><date>2018</date><risdate>2018</risdate><volume>761</volume><spage>61</spage><epage>64</epage><pages>61-64</pages><issn>1013-9826</issn><issn>1662-9795</issn><eissn>1662-9795</eissn><abstract>Alkali-activated slag materials are known for their high chloride penetration resistance. This makes them potentially applicable as repair systems for damaged steel-reinforced concrete structures, which are exposed to chloride attack. For this purpose, the influence of the activator composition, i.e. the SiO2 and Na2O concentration of the alkaline solution on a) the compressive strength, b) shrinkage and mass change and c) the resistance against chloride penetration of four alkali-activated slag mortars (AASM) were studied. An ordinary Portland cement-based mortar was used as the reference sample. Increasing SiO2 and Na2O concentrations increased the strength, shrinkage and mass loss of the AASMs. The resistance of the mortars against chloride penetration was evaluated using the non-steady-state migration coefficient Dnssm obtained from NT BUILD 492. The results indicate that the Dnssm is related to differences in the pore solution of the AASMs rather than to differences in their microstructure. An upcoming study of the authors is going to evaluate this hypothesis by the accelerated chloride penetration (diffusion) test.</abstract><cop>Zurich</cop><pub>Trans Tech Publications Ltd</pub><doi>10.4028/www.scientific.net/KEM.761.61</doi><tpages>4</tpages><orcidid>https://orcid.org/0000-0002-1463-0308</orcidid></addata></record> |
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| subjects | Accelerated tests Chloride Chloride resistance Composition Compressive strength Concrete structures Migration Mortars (material) Penetration Penetration resistance Portland cements Reinforced concrete Reinforcing steels Shrinkage Silicon dioxide Slag Steel structures Structural damage |
| title | The Influence of Activator Composition on the Strength, Shrinkage and Chloride Migration Resistance of Alkali-Activated Slag Mortars |
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