The construction industry needs to find cost-effective materials to enhance the properties of concrete. Cement and aggregate are the major constituents in concrete production. This has inevitably led to a continuous and increasing exploitation of natural materials to produce the constituents for concrete production. The result has been the depletion of virgin raw materials and increased effects of environmental degradation. In this research, a study was carried out on the use of recycled rubber tyres as a partial replacement for coarse aggregates in concrete production. Recycled waste tyre rubber is a promising material in the construction industry due to its reduced weight, elasticity, energy absorption, sound and heat insulating properties. Literature suggests that there is a significant loss in the strength of rubberized concrete with increasing tyre content. Further, workability and bond properties have been reported to reduce as well. Therefore, it is necessary to control this loss of strength and other parameters in concrete in the replacement process of natural aggregates. This research aimed at studying the compressive, tensile and bond properties of used tyre rubber reinforced concrete. Test results from laboratory experiments enabled determination of mechanical, physical and durability properties, as well as establishment of the extent of substitution of normal aggregates with waste rubber as aggregate in concrete. Three classes of concrete, C15, C20 and C25 were produced by substitution of selected percentages of aggregates by treated chopped waste tire rubber. The percentage replacement of coarse aggregates was 5, 15 and 25 per cent. The size of the chopped rubber aggregates varied from 20 mm to 19 mm. Slump, permeability and bulk density tests were conducted on fresh concrete mixes for both the normal and treated rubber modified concrete. Similarly, compressive strength, tensile splitting strength, bond test and durability against acid attack tests were conducted on hardened concrete. The research established that rubber modified concrete compares favourably with standard concrete, with up to 15 per cent replacement of coarse aggregate. At 15 per cent replacement, only 0.1 per cent loss of strength was established. There was noticeable reduction in properties with 25 per cent replacement. However, Rubber modified concrete performed better by gradual cracking at elevated temperatures. There is potential for rubber modified concrete products in Zambia which in turn mitigates adverse impacts resulting from over exploitation of natural aggregates and disposal of used rubber tires.
| Published in | Journal of Civil, Construction and Environmental Engineering (Volume 7, Issue 4) |
| DOI | 10.11648/j.jccee.20220704.14 |
| Page(s) | 73-80 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Waste Tyre, Aggregate, Concrete, Crumb Rubber, Percentage Replacement, Rubberized Concrete
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APA Style
Theresa Bwalya, Michael Mulenga, Chizyuka Chizyuka. (2022). Used Tyre as a Resource in Concrete Production in Zambia. Journal of Civil, Construction and Environmental Engineering, 7(4), 73-80. https://doi.org/10.11648/j.jccee.20220704.14
ACS Style
Theresa Bwalya; Michael Mulenga; Chizyuka Chizyuka. Used Tyre as a Resource in Concrete Production in Zambia. J. Civ. Constr. Environ. Eng. 2022, 7(4), 73-80. doi: 10.11648/j.jccee.20220704.14
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Download@article{10.11648/j.jccee.20220704.14,
author = {Theresa Bwalya and Michael Mulenga and Chizyuka Chizyuka},
title = {Used Tyre as a Resource in Concrete Production in Zambia},
journal = {Journal of Civil, Construction and Environmental Engineering},
volume = {7},
number = {4},
pages = {73-80},
doi = {10.11648/j.jccee.20220704.14},
url = {https://doi.org/10.11648/j.jccee.20220704.14},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jccee.20220704.14},
abstract = {The construction industry needs to find cost-effective materials to enhance the properties of concrete. Cement and aggregate are the major constituents in concrete production. This has inevitably led to a continuous and increasing exploitation of natural materials to produce the constituents for concrete production. The result has been the depletion of virgin raw materials and increased effects of environmental degradation. In this research, a study was carried out on the use of recycled rubber tyres as a partial replacement for coarse aggregates in concrete production. Recycled waste tyre rubber is a promising material in the construction industry due to its reduced weight, elasticity, energy absorption, sound and heat insulating properties. Literature suggests that there is a significant loss in the strength of rubberized concrete with increasing tyre content. Further, workability and bond properties have been reported to reduce as well. Therefore, it is necessary to control this loss of strength and other parameters in concrete in the replacement process of natural aggregates. This research aimed at studying the compressive, tensile and bond properties of used tyre rubber reinforced concrete. Test results from laboratory experiments enabled determination of mechanical, physical and durability properties, as well as establishment of the extent of substitution of normal aggregates with waste rubber as aggregate in concrete. Three classes of concrete, C15, C20 and C25 were produced by substitution of selected percentages of aggregates by treated chopped waste tire rubber. The percentage replacement of coarse aggregates was 5, 15 and 25 per cent. The size of the chopped rubber aggregates varied from 20 mm to 19 mm. Slump, permeability and bulk density tests were conducted on fresh concrete mixes for both the normal and treated rubber modified concrete. Similarly, compressive strength, tensile splitting strength, bond test and durability against acid attack tests were conducted on hardened concrete. The research established that rubber modified concrete compares favourably with standard concrete, with up to 15 per cent replacement of coarse aggregate. At 15 per cent replacement, only 0.1 per cent loss of strength was established. There was noticeable reduction in properties with 25 per cent replacement. However, Rubber modified concrete performed better by gradual cracking at elevated temperatures. There is potential for rubber modified concrete products in Zambia which in turn mitigates adverse impacts resulting from over exploitation of natural aggregates and disposal of used rubber tires.},
year = {2022}
}
TY - JOUR T1 - Used Tyre as a Resource in Concrete Production in Zambia AU - Theresa Bwalya AU - Michael Mulenga AU - Chizyuka Chizyuka Y1 - 2022/07/20 PY - 2022 N1 - https://doi.org/10.11648/j.jccee.20220704.14 DO - 10.11648/j.jccee.20220704.14 T2 - Journal of Civil, Construction and Environmental Engineering JF - Journal of Civil, Construction and Environmental Engineering JO - Journal of Civil, Construction and Environmental Engineering SP - 73 EP - 80 PB - Science Publishing Group SN - 2637-3890 UR - https://doi.org/10.11648/j.jccee.20220704.14 AB - The construction industry needs to find cost-effective materials to enhance the properties of concrete. Cement and aggregate are the major constituents in concrete production. This has inevitably led to a continuous and increasing exploitation of natural materials to produce the constituents for concrete production. The result has been the depletion of virgin raw materials and increased effects of environmental degradation. In this research, a study was carried out on the use of recycled rubber tyres as a partial replacement for coarse aggregates in concrete production. Recycled waste tyre rubber is a promising material in the construction industry due to its reduced weight, elasticity, energy absorption, sound and heat insulating properties. Literature suggests that there is a significant loss in the strength of rubberized concrete with increasing tyre content. Further, workability and bond properties have been reported to reduce as well. Therefore, it is necessary to control this loss of strength and other parameters in concrete in the replacement process of natural aggregates. This research aimed at studying the compressive, tensile and bond properties of used tyre rubber reinforced concrete. Test results from laboratory experiments enabled determination of mechanical, physical and durability properties, as well as establishment of the extent of substitution of normal aggregates with waste rubber as aggregate in concrete. Three classes of concrete, C15, C20 and C25 were produced by substitution of selected percentages of aggregates by treated chopped waste tire rubber. The percentage replacement of coarse aggregates was 5, 15 and 25 per cent. The size of the chopped rubber aggregates varied from 20 mm to 19 mm. Slump, permeability and bulk density tests were conducted on fresh concrete mixes for both the normal and treated rubber modified concrete. Similarly, compressive strength, tensile splitting strength, bond test and durability against acid attack tests were conducted on hardened concrete. The research established that rubber modified concrete compares favourably with standard concrete, with up to 15 per cent replacement of coarse aggregate. At 15 per cent replacement, only 0.1 per cent loss of strength was established. There was noticeable reduction in properties with 25 per cent replacement. However, Rubber modified concrete performed better by gradual cracking at elevated temperatures. There is potential for rubber modified concrete products in Zambia which in turn mitigates adverse impacts resulting from over exploitation of natural aggregates and disposal of used rubber tires. VL - 7 IS - 4 ER -
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