Improving properties of Portland cement-blast furnace slag blended paste through sodium bicarbonate-induced carbonation
The addition of NaHCO3 has the potential to enhance properties of concrete by facilitating internal carbonation. This study investigates the effects of the incorporation of NaHCO3 into ordinary Portland cement-blast furnace slag paste. The results show that the addition of NaHCO3 had an impact on th...
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| Language: | English |
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Elsevier
2024-12-01
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| Series: | Developments in the Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165924002564 |
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| author | Melaku N. Seifu Daeik Jang G.M. Kim Solmoi Park |
| author_facet | Melaku N. Seifu Daeik Jang G.M. Kim Solmoi Park |
| author_sort | Melaku N. Seifu |
| collection | DOAJ |
| description | The addition of NaHCO3 has the potential to enhance properties of concrete by facilitating internal carbonation. This study investigates the effects of the incorporation of NaHCO3 into ordinary Portland cement-blast furnace slag paste. The results show that the addition of NaHCO3 had an impact on the hydration process and increased the heat of hydration on all the slag samples. NaHCO3 caused internal carbonation and facilitated the formation of calcium carbonate and different carbon-based AFm phases, such as monocarbonate. The incorporation of NaHCO3 improved the pore structure of the paste and enhanced resistance against chloride penetration. The chloride migration coefficient of the Portland cement paste sample was reduced up to 96.5% with the incorporation of 2% NaHCO3 at 70% slag replacement. The compressive strength of the samples also showed an improvement with 1% NaHCO3 addition increasing the early age strength and 2% NaHCO3 addition increasing the matured age strength. |
| format | Article |
| id | doaj-art-e879428321004b61a56bd60255f7099f |
| institution | OA Journals |
| issn | 2666-1659 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj-art-e879428321004b61a56bd60255f7099f2025-08-20T01:58:23ZengElsevierDevelopments in the Built Environment2666-16592024-12-012010057510.1016/j.dibe.2024.100575Improving properties of Portland cement-blast furnace slag blended paste through sodium bicarbonate-induced carbonationMelaku N. Seifu0Daeik Jang1G.M. Kim2Solmoi Park3Department of Civil Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of KoreaDepartment of Civil Engineering, University of Texas at Arlington, Arlington, TX, 76010, USAMineral Processing & Metallurgy Research Center, Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources, Republic of Korea; Corresponding author.Department of Civil Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea; Corresponding author.The addition of NaHCO3 has the potential to enhance properties of concrete by facilitating internal carbonation. This study investigates the effects of the incorporation of NaHCO3 into ordinary Portland cement-blast furnace slag paste. The results show that the addition of NaHCO3 had an impact on the hydration process and increased the heat of hydration on all the slag samples. NaHCO3 caused internal carbonation and facilitated the formation of calcium carbonate and different carbon-based AFm phases, such as monocarbonate. The incorporation of NaHCO3 improved the pore structure of the paste and enhanced resistance against chloride penetration. The chloride migration coefficient of the Portland cement paste sample was reduced up to 96.5% with the incorporation of 2% NaHCO3 at 70% slag replacement. The compressive strength of the samples also showed an improvement with 1% NaHCO3 addition increasing the early age strength and 2% NaHCO3 addition increasing the matured age strength.http://www.sciencedirect.com/science/article/pii/S2666165924002564Portland cementBlast furnace slagNaHCO3Carbonation |
| spellingShingle | Melaku N. Seifu Daeik Jang G.M. Kim Solmoi Park Improving properties of Portland cement-blast furnace slag blended paste through sodium bicarbonate-induced carbonation Developments in the Built Environment Portland cement Blast furnace slag NaHCO3 Carbonation |
| title | Improving properties of Portland cement-blast furnace slag blended paste through sodium bicarbonate-induced carbonation |
| title_full | Improving properties of Portland cement-blast furnace slag blended paste through sodium bicarbonate-induced carbonation |
| title_fullStr | Improving properties of Portland cement-blast furnace slag blended paste through sodium bicarbonate-induced carbonation |
| title_full_unstemmed | Improving properties of Portland cement-blast furnace slag blended paste through sodium bicarbonate-induced carbonation |
| title_short | Improving properties of Portland cement-blast furnace slag blended paste through sodium bicarbonate-induced carbonation |
| title_sort | improving properties of portland cement blast furnace slag blended paste through sodium bicarbonate induced carbonation |
| topic | Portland cement Blast furnace slag NaHCO3 Carbonation |
| url | http://www.sciencedirect.com/science/article/pii/S2666165924002564 |
| work_keys_str_mv | AT melakunseifu improvingpropertiesofportlandcementblastfurnaceslagblendedpastethroughsodiumbicarbonateinducedcarbonation AT daeikjang improvingpropertiesofportlandcementblastfurnaceslagblendedpastethroughsodiumbicarbonateinducedcarbonation AT gmkim improvingpropertiesofportlandcementblastfurnaceslagblendedpastethroughsodiumbicarbonateinducedcarbonation AT solmoipark improvingpropertiesofportlandcementblastfurnaceslagblendedpastethroughsodiumbicarbonateinducedcarbonation |