Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement
This paper presents the findings of an experimental investigation on optimizing pozzolanic activity of a blend of Rice Husks (RH), Spent Bleaching Earth (SBE) and Broken Bricks (BB) to form pozzolana that would have pozzolanic activity comparable to natural pozzolanas. Four ratios of RH, BB, and SBE...
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| Format: | Article |
| Language: | English |
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Elsevier
2019-09-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844019361031 |
| _version_ | 1818160249458130944 |
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| author | Protus Nalobile Jackson Muthengia Wachira Joseph Karanja Thiong'o Joseph Mwiti Marangu |
| author_facet | Protus Nalobile Jackson Muthengia Wachira Joseph Karanja Thiong'o Joseph Mwiti Marangu |
| author_sort | Protus Nalobile |
| collection | DOAJ |
| description | This paper presents the findings of an experimental investigation on optimizing pozzolanic activity of a blend of Rice Husks (RH), Spent Bleaching Earth (SBE) and Broken Bricks (BB) to form pozzolana that would have pozzolanic activity comparable to natural pozzolanas. Four ratios of RH, BB, and SBE were burnt in the Fixed Bed Kiln (FBK). The starting ratio had 20 kg of RH, 0 kg of BB and 4 kg of SBE. The amount of BB was increased by 2 kg each to a maximum of 6 kg as the mass of SBE was kept constant. The resultant ashes were subjected to various pozzolanic tests. This included; saturated lime test and compressive strength analysis. It was observed that the calcined blend with 10: 1: 2 mix of RH: BB: SBE exhibited the highest pozzolanic activity. This sample was mixed with acetylene lime sludge (ALS) in the ratio of 2:1 pozzolana: ALS. The compressive strengths for these cements were tested at 2 and 28 days of curing. The compressive strengths of this cement met the required EN standards for Portland pozzolana cement. |
| first_indexed | 2024-12-11T15:58:53Z |
| format | Article |
| id | doaj.art-7300f14ba2d14419bb87d87ca2fd3b78 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-11T15:58:53Z |
| publishDate | 2019-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-7300f14ba2d14419bb87d87ca2fd3b782022-12-22T00:59:22ZengElsevierHeliyon2405-84402019-09-0159e02443Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cementProtus Nalobile0Jackson Muthengia Wachira1Joseph Karanja Thiong'o2Joseph Mwiti Marangu3Department of Chemistry, Kenyatta University, Nairobi, Kenya; Corresponding author.Department of Physical Sciences, University of Embu, Embu, KenyaDepartment of Chemistry, Kenyatta University, Nairobi, KenyaDepartment of Physical Sciences, Meru University of Science & Technology, Meru, Kenya; Corresponding author.This paper presents the findings of an experimental investigation on optimizing pozzolanic activity of a blend of Rice Husks (RH), Spent Bleaching Earth (SBE) and Broken Bricks (BB) to form pozzolana that would have pozzolanic activity comparable to natural pozzolanas. Four ratios of RH, BB, and SBE were burnt in the Fixed Bed Kiln (FBK). The starting ratio had 20 kg of RH, 0 kg of BB and 4 kg of SBE. The amount of BB was increased by 2 kg each to a maximum of 6 kg as the mass of SBE was kept constant. The resultant ashes were subjected to various pozzolanic tests. This included; saturated lime test and compressive strength analysis. It was observed that the calcined blend with 10: 1: 2 mix of RH: BB: SBE exhibited the highest pozzolanic activity. This sample was mixed with acetylene lime sludge (ALS) in the ratio of 2:1 pozzolana: ALS. The compressive strengths for these cements were tested at 2 and 28 days of curing. The compressive strengths of this cement met the required EN standards for Portland pozzolana cement.http://www.sciencedirect.com/science/article/pii/S2405844019361031Materials scienceCivil engineeringCalcium carbide residueBroken bricksBlended cementPozzolana |
| spellingShingle | Protus Nalobile Jackson Muthengia Wachira Joseph Karanja Thiong'o Joseph Mwiti Marangu Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement Heliyon Materials science Civil engineering Calcium carbide residue Broken bricks Blended cement Pozzolana |
| title | Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement |
| title_full | Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement |
| title_fullStr | Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement |
| title_full_unstemmed | Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement |
| title_short | Pyroprocessing and the optimum mix ratio of rice husks, broken bricks and spent bleaching earth to make pozzolanic cement |
| title_sort | pyroprocessing and the optimum mix ratio of rice husks broken bricks and spent bleaching earth to make pozzolanic cement |
| topic | Materials science Civil engineering Calcium carbide residue Broken bricks Blended cement Pozzolana |
| url | http://www.sciencedirect.com/science/article/pii/S2405844019361031 |
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