The Effect of Bottom Ash as Partial Replacement of Fine Aggregate in Different NaOH Molarities on the Compressive Strength of Geopolymer Mortar
This study compared the compressive strength of the geopolymer mortar with different percentages of bottom ash as a replacement for fine aggregate. Fly ash from two sources was blended as raw materials. Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) were used as alkaline solutions, with a rat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2024-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/06/e3sconf_aisce2023_01031.pdf |
| _version_ | 1827371907524067328 |
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| author | Nurwidayati Ratni Saniah Intan Chairunnisa Nursiah Yuniati Pratiwi Ade |
| author_facet | Nurwidayati Ratni Saniah Intan Chairunnisa Nursiah Yuniati Pratiwi Ade |
| author_sort | Nurwidayati Ratni |
| collection | DOAJ |
| description | This study compared the compressive strength of the geopolymer mortar with different percentages of bottom ash as a replacement for fine aggregate. Fly ash from two sources was blended as raw materials. Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) were used as alkaline solutions, with a ratio of 2.5 and two NaOH concentrations of 8M and 10M. The percentage of bottom ash was substituted up to 30%. The result indicated that the setting time was longer due to the higher molarity of NaOH. The compressive strength of mortar geopolymer at 10M of NaOH was higher than 8M. Higher percentages of bottom ash significantly decreased the compressive strength. However, at 10M NaOH, the compressive strength was decreased by only 11% (20% of substituting). Increasing the molarity of NaOH decreased the absorption of mortar geopolymer and increased the restrain to sodium sulfate. |
| first_indexed | 2024-03-08T10:49:33Z |
| format | Article |
| id | doaj.art-a2f1d720ddcf4666ba0773f6e982f8b5 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-08T10:49:33Z |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-a2f1d720ddcf4666ba0773f6e982f8b52024-01-26T16:52:05ZengEDP SciencesE3S Web of Conferences2267-12422024-01-014760103110.1051/e3sconf/202447601031e3sconf_aisce2023_01031The Effect of Bottom Ash as Partial Replacement of Fine Aggregate in Different NaOH Molarities on the Compressive Strength of Geopolymer MortarNurwidayati Ratni0Saniah Intan1Chairunnisa Nursiah2Yuniati Pratiwi Ade3Civil Engineering Program, Engineering Faculty, Lambung Mangkurat UniversityCivil Engineering Program, Engineering Faculty, Lambung Mangkurat UniversityCivil Engineering Program, Engineering Faculty, Lambung Mangkurat UniversityCivil Engineering Post Graduate Program, Engineering Faculty, Lambung Mangkurat UniversityThis study compared the compressive strength of the geopolymer mortar with different percentages of bottom ash as a replacement for fine aggregate. Fly ash from two sources was blended as raw materials. Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) were used as alkaline solutions, with a ratio of 2.5 and two NaOH concentrations of 8M and 10M. The percentage of bottom ash was substituted up to 30%. The result indicated that the setting time was longer due to the higher molarity of NaOH. The compressive strength of mortar geopolymer at 10M of NaOH was higher than 8M. Higher percentages of bottom ash significantly decreased the compressive strength. However, at 10M NaOH, the compressive strength was decreased by only 11% (20% of substituting). Increasing the molarity of NaOH decreased the absorption of mortar geopolymer and increased the restrain to sodium sulfate.https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/06/e3sconf_aisce2023_01031.pdf |
| spellingShingle | Nurwidayati Ratni Saniah Intan Chairunnisa Nursiah Yuniati Pratiwi Ade The Effect of Bottom Ash as Partial Replacement of Fine Aggregate in Different NaOH Molarities on the Compressive Strength of Geopolymer Mortar E3S Web of Conferences |
| title | The Effect of Bottom Ash as Partial Replacement of Fine Aggregate in Different NaOH Molarities on the Compressive Strength of Geopolymer Mortar |
| title_full | The Effect of Bottom Ash as Partial Replacement of Fine Aggregate in Different NaOH Molarities on the Compressive Strength of Geopolymer Mortar |
| title_fullStr | The Effect of Bottom Ash as Partial Replacement of Fine Aggregate in Different NaOH Molarities on the Compressive Strength of Geopolymer Mortar |
| title_full_unstemmed | The Effect of Bottom Ash as Partial Replacement of Fine Aggregate in Different NaOH Molarities on the Compressive Strength of Geopolymer Mortar |
| title_short | The Effect of Bottom Ash as Partial Replacement of Fine Aggregate in Different NaOH Molarities on the Compressive Strength of Geopolymer Mortar |
| title_sort | effect of bottom ash as partial replacement of fine aggregate in different naoh molarities on the compressive strength of geopolymer mortar |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/06/e3sconf_aisce2023_01031.pdf |
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