Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete.

Concrete, a fundamental construction material, is susceptible to various forms of damage (cracking). Formation of cracks may result due to the shrinkage effects during curing and mechanical loading which deteriorate the concrete performance especially in terms of durability aspect. Traditional metho...

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Main Author: Manzi, Evans Evalist
Format: Thesis
Language:English
Published: Kabale University 2024
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Online Access:http://hdl.handle.net/20.500.12493/2282
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author Manzi, Evans Evalist
author_facet Manzi, Evans Evalist
author_sort Manzi, Evans Evalist
collection KAB-DR
description Concrete, a fundamental construction material, is susceptible to various forms of damage (cracking). Formation of cracks may result due to the shrinkage effects during curing and mechanical loading which deteriorate the concrete performance especially in terms of durability aspect. Traditional methods of repair often involve human intervention and significant costs. In recent years, the concept of self-healing concrete has gained traction as a potential solution to mitigate the impact of cracks and enhance the longevity of structures. Self-healing concrete by using bacteria as a healing agent had gained interest among researchers. In contrast, this research delves into the intricate relationship between epoxy concentrations and the self-healing capabilities of concrete, aiming to provide comprehensive insights into optimal concentrations and their implications for construction. The experiment involved varying epoxy concentrations, ranging from 0% to 15%, in concrete mixes. Critical parameters, such as slump, compressive strength at 28 days, and microscopic structure after crack induction, were meticulously analyzed. The objective was to understand how epoxy, known for its adhesive and cohesive properties, influences the mechanical properties and self-healing potential of concrete. The experimental setup aimed to simulate real-world scenarios where concrete structures may be exposed to external stresses leading to cracks. The results revealed a consistent decrease in slump as epoxy concentrations increased, indicating a reduction in concrete work-ability. Notably, the compressive strength at 28 days exhibited a fascinating trend. At 5% epoxy, there was a modest increase in strength, while the optimal concentration of 10% demonstrated a significant enhancement. However, concentrations beyond the optimum (15% epoxy) led to a decline in compressive strength. The experiment's pivotal phase involved crack induction to assess self-healing capabilities. At 10% epoxy concentration, the compressive strength increased after crack induction. Microscopic analysis further corroborated these findings, revealing signs of self-healing within the concrete matrix. This enhancement suggested a unique healing mechanism associated with the optimal epoxy concentration.
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spelling oai:idr.kab.ac.ug:20.500.12493-22822024-08-07T00:00:41Z Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete. Manzi, Evans Evalist Investigating Performance Epoxy Concentrations Self-Healing Concrete Concrete, a fundamental construction material, is susceptible to various forms of damage (cracking). Formation of cracks may result due to the shrinkage effects during curing and mechanical loading which deteriorate the concrete performance especially in terms of durability aspect. Traditional methods of repair often involve human intervention and significant costs. In recent years, the concept of self-healing concrete has gained traction as a potential solution to mitigate the impact of cracks and enhance the longevity of structures. Self-healing concrete by using bacteria as a healing agent had gained interest among researchers. In contrast, this research delves into the intricate relationship between epoxy concentrations and the self-healing capabilities of concrete, aiming to provide comprehensive insights into optimal concentrations and their implications for construction. The experiment involved varying epoxy concentrations, ranging from 0% to 15%, in concrete mixes. Critical parameters, such as slump, compressive strength at 28 days, and microscopic structure after crack induction, were meticulously analyzed. The objective was to understand how epoxy, known for its adhesive and cohesive properties, influences the mechanical properties and self-healing potential of concrete. The experimental setup aimed to simulate real-world scenarios where concrete structures may be exposed to external stresses leading to cracks. The results revealed a consistent decrease in slump as epoxy concentrations increased, indicating a reduction in concrete work-ability. Notably, the compressive strength at 28 days exhibited a fascinating trend. At 5% epoxy, there was a modest increase in strength, while the optimal concentration of 10% demonstrated a significant enhancement. However, concentrations beyond the optimum (15% epoxy) led to a decline in compressive strength. The experiment's pivotal phase involved crack induction to assess self-healing capabilities. At 10% epoxy concentration, the compressive strength increased after crack induction. Microscopic analysis further corroborated these findings, revealing signs of self-healing within the concrete matrix. This enhancement suggested a unique healing mechanism associated with the optimal epoxy concentration. 2024-08-06T15:02:12Z 2024-08-06T15:02:12Z 2024 Thesis Manzi, Evans Evalist (2024). Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete. Kabale: Kabale University. http://hdl.handle.net/20.500.12493/2282 en Attribution-NonCommercial-NoDerivs 3.0 United States http://creativecommons.org/licenses/by-nc-nd/3.0/us/ application/pdf Kabale University
spellingShingle Investigating
Performance
Epoxy Concentrations
Self-Healing
Concrete
Manzi, Evans Evalist
Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete.
title Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete.
title_full Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete.
title_fullStr Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete.
title_full_unstemmed Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete.
title_short Investigating the Performance of Epoxy Concentrations in the Self-Healing of Concrete.
title_sort investigating the performance of epoxy concentrations in the self healing of concrete
topic Investigating
Performance
Epoxy Concentrations
Self-Healing
Concrete
url http://hdl.handle.net/20.500.12493/2282
work_keys_str_mv AT manzievansevalist investigatingtheperformanceofepoxyconcentrationsintheselfhealingofconcrete