Properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water: A comparative study
The existing literature shows that rubberised concrete suffers from reduced mechanical properties when it is compared with normal density non-rubberised concrete. This is due to the underlying reduced bonding between tire rubber and other concrete ingredients. The massive sulfuric acid attack in rub...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023047229 |
| _version_ | 1797796153287245824 |
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| author | David Sinkhonde Richard Ocharo Onchiri Walter Odhiambo Oyawa John Nyiro Mwero |
| author_facet | David Sinkhonde Richard Ocharo Onchiri Walter Odhiambo Oyawa John Nyiro Mwero |
| author_sort | David Sinkhonde |
| collection | DOAJ |
| description | The existing literature shows that rubberised concrete suffers from reduced mechanical properties when it is compared with normal density non-rubberised concrete. This is due to the underlying reduced bonding between tire rubber and other concrete ingredients. The massive sulfuric acid attack in rubberised concrete must have additionally discouraged researchers from attempts to assess the phenomenon of improving performance of rubberised concrete. A research was undertaken to compare the properties of concrete mixes containing tire rubber replacing coarse aggregate and waste clay brick powder (WCBP) replacing cement exposed to sulfuric acid and cured in water. Concrete cubes and cylinders of concrete grades of 20 MPa, 25 MPa and 30 MPa were immersed in 5% sulfuric acid solution up to 90 days following moist curing of 27 days. Other concrete cubes and cylinders were cured in water for comparison. The compressive strength findings indicated that all the specimens exposed to sulfuric acid had lost more than 57% of their compressive strengths after 90 days with reference to the corresponding samples cured in water. In contrast, out of all concrete mixes investigated for all concrete grades, never were the split tensile strength losses of the specimens exposed to sulfuric acid greater than 43.1% compared with those cured in water. In each exposure condition, concrete mixes with 5% WCBP showed slight improvements in compressive and split tensile strengths in contrast with the conventional concrete mixes. Visual inspection of the specimens illustrated depositions of flaky or white substances on the outer layers of specimens exposed to sulfuric acid compared with specimens cured in water. Moreover, the split tensile strengths of specimens were not severely affected with exposure to sulfuric acid in comparison with compressive strengths. Eventually, the research identified the existence of WCBP in rubberised concrete as a promising criterion of minimising strength losses of rubberised concrete. |
| first_indexed | 2024-03-13T03:28:47Z |
| format | Article |
| id | doaj.art-d8f916bc8ca84408901b2bddeddd608a |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-13T03:28:47Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-d8f916bc8ca84408901b2bddeddd608a2023-06-25T04:43:12ZengElsevierHeliyon2405-84402023-06-0196e17514Properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water: A comparative studyDavid Sinkhonde0Richard Ocharo Onchiri1Walter Odhiambo Oyawa2John Nyiro Mwero3Department of Civil and Construction Engineering, Pan African University Institute for Basic Sciences, Technology and Innovation, Nairobi, Kenya; Corresponding author.Department of Building and Civil Engineering, Technical University of Mombasa, Mombasa, KenyaDepartment of Civil, Construction and Environmental Engineering, Jomo Kenyatta University of Agriculture and Technology, Nairobi, KenyaDepartment of Structural and Construction Engineering, The Technical University of Kenya, Nairobi, KenyaThe existing literature shows that rubberised concrete suffers from reduced mechanical properties when it is compared with normal density non-rubberised concrete. This is due to the underlying reduced bonding between tire rubber and other concrete ingredients. The massive sulfuric acid attack in rubberised concrete must have additionally discouraged researchers from attempts to assess the phenomenon of improving performance of rubberised concrete. A research was undertaken to compare the properties of concrete mixes containing tire rubber replacing coarse aggregate and waste clay brick powder (WCBP) replacing cement exposed to sulfuric acid and cured in water. Concrete cubes and cylinders of concrete grades of 20 MPa, 25 MPa and 30 MPa were immersed in 5% sulfuric acid solution up to 90 days following moist curing of 27 days. Other concrete cubes and cylinders were cured in water for comparison. The compressive strength findings indicated that all the specimens exposed to sulfuric acid had lost more than 57% of their compressive strengths after 90 days with reference to the corresponding samples cured in water. In contrast, out of all concrete mixes investigated for all concrete grades, never were the split tensile strength losses of the specimens exposed to sulfuric acid greater than 43.1% compared with those cured in water. In each exposure condition, concrete mixes with 5% WCBP showed slight improvements in compressive and split tensile strengths in contrast with the conventional concrete mixes. Visual inspection of the specimens illustrated depositions of flaky or white substances on the outer layers of specimens exposed to sulfuric acid compared with specimens cured in water. Moreover, the split tensile strengths of specimens were not severely affected with exposure to sulfuric acid in comparison with compressive strengths. Eventually, the research identified the existence of WCBP in rubberised concrete as a promising criterion of minimising strength losses of rubberised concrete.http://www.sciencedirect.com/science/article/pii/S2405844023047229Rubberised concreteWaste clay brick powderSulfuric acidSplit tensile strengthCompressive strength |
| spellingShingle | David Sinkhonde Richard Ocharo Onchiri Walter Odhiambo Oyawa John Nyiro Mwero Properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water: A comparative study Heliyon Rubberised concrete Waste clay brick powder Sulfuric acid Split tensile strength Compressive strength |
| title | Properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water: A comparative study |
| title_full | Properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water: A comparative study |
| title_fullStr | Properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water: A comparative study |
| title_full_unstemmed | Properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water: A comparative study |
| title_short | Properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water: A comparative study |
| title_sort | properties of concrete mixes containing tire rubber and brick powder exposed to sulfuric acid and cured in water a comparative study |
| topic | Rubberised concrete Waste clay brick powder Sulfuric acid Split tensile strength Compressive strength |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023047229 |
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