Cold Water Extraction for determination of the free alkali metal content in blended cement pastes
In this work, Cold Water Extraction (CWE) was performed on blended cement pastes to extract the pore solution and determine the free alkali metal content. To better understand CWE results, the reactivity of cementitious materials was also investigated, complemented by TGA and quantitative XRD analys...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Cement |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666549223000257 |
| _version_ | 1797690896356999168 |
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| author | Maxime Ranger Marianne Tange Hasholt |
| author_facet | Maxime Ranger Marianne Tange Hasholt |
| author_sort | Maxime Ranger |
| collection | DOAJ |
| description | In this work, Cold Water Extraction (CWE) was performed on blended cement pastes to extract the pore solution and determine the free alkali metal content. To better understand CWE results, the reactivity of cementitious materials was also investigated, complemented by TGA and quantitative XRD analysis. The study aimed at being generic to assess the suitability of the methods, and included 9 SCMs with various compositions: limestone, coal fly ash, two calcined clays, two biomass ashes, sewage sludge ash, crushed brick and glass beads.The study highlighted the importance of assessing the reactivity of SCMs in parallel to performing CWE, as this contributes to a more certain interpretation of the results. In general, results obtained with CWE were consistent with the existing literature about the effect of binder composition on the free alkali metal content. From a practical view, CWE and SCM reactivity tests could be performed with basic laboratory equipment and appeared to be applicable to both traditional and alternative SCMs. |
| first_indexed | 2024-03-12T02:05:43Z |
| format | Article |
| id | doaj.art-edd8e1e2a68d496aa9b22542b3660292 |
| institution | Directory Open Access Journal |
| issn | 2666-5492 |
| language | English |
| last_indexed | 2024-03-12T02:05:43Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cement |
| spelling | doaj.art-edd8e1e2a68d496aa9b22542b36602922023-09-07T04:45:04ZengElsevierCement2666-54922023-09-0113100079Cold Water Extraction for determination of the free alkali metal content in blended cement pastesMaxime Ranger0Marianne Tange Hasholt1Department of Environmental and Resource Engineering, Technical University of Denmark (DTU), Kgs. Lyngby 2800, Denmark; Danish Road Directorate, Copenhagen V 1577, Denmark; Corresponding author at: Department of Environmental and Resource Engineering, Technical University of Denmark (DTU), Kgs. Lyngby 2800, Denmark.Danish Road Directorate, Copenhagen V 1577, DenmarkIn this work, Cold Water Extraction (CWE) was performed on blended cement pastes to extract the pore solution and determine the free alkali metal content. To better understand CWE results, the reactivity of cementitious materials was also investigated, complemented by TGA and quantitative XRD analysis. The study aimed at being generic to assess the suitability of the methods, and included 9 SCMs with various compositions: limestone, coal fly ash, two calcined clays, two biomass ashes, sewage sludge ash, crushed brick and glass beads.The study highlighted the importance of assessing the reactivity of SCMs in parallel to performing CWE, as this contributes to a more certain interpretation of the results. In general, results obtained with CWE were consistent with the existing literature about the effect of binder composition on the free alkali metal content. From a practical view, CWE and SCM reactivity tests could be performed with basic laboratory equipment and appeared to be applicable to both traditional and alternative SCMs.http://www.sciencedirect.com/science/article/pii/S2666549223000257Pore solutionCold Water ExtractionAlkalisBlended cementCement paste |
| spellingShingle | Maxime Ranger Marianne Tange Hasholt Cold Water Extraction for determination of the free alkali metal content in blended cement pastes Cement Pore solution Cold Water Extraction Alkalis Blended cement Cement paste |
| title | Cold Water Extraction for determination of the free alkali metal content in blended cement pastes |
| title_full | Cold Water Extraction for determination of the free alkali metal content in blended cement pastes |
| title_fullStr | Cold Water Extraction for determination of the free alkali metal content in blended cement pastes |
| title_full_unstemmed | Cold Water Extraction for determination of the free alkali metal content in blended cement pastes |
| title_short | Cold Water Extraction for determination of the free alkali metal content in blended cement pastes |
| title_sort | cold water extraction for determination of the free alkali metal content in blended cement pastes |
| topic | Pore solution Cold Water Extraction Alkalis Blended cement Cement paste |
| url | http://www.sciencedirect.com/science/article/pii/S2666549223000257 |
| work_keys_str_mv | AT maximeranger coldwaterextractionfordeterminationofthefreealkalimetalcontentinblendedcementpastes AT mariannetangehasholt coldwaterextractionfordeterminationofthefreealkalimetalcontentinblendedcementpastes |