Development of Sustainable Concrete Mix Designs Incorporating Recycled Aggregates

Thesis Abstract

Abstract
The construction industry is one of the largest consumers of natural resources and producers of waste globally. In response to the environmental challenges posed by the industry, there is a growing emphasis on developing sustainable practices, including the use of recycled materials in concrete production. This thesis focuses on the development of sustainable concrete mix designs by incorporating recycled aggregates as a replacement for natural aggregates. The objective of this research is to investigate the feasibility of using recycled aggregates in concrete production and to optimize mix designs to enhance the performance and sustainability of the resulting concrete. The introduction provides an overview of the research background, highlighting the increasing interest in sustainable construction practices and the potential benefits of incorporating recycled aggregates in concrete mix designs. The problem statement underscores the need for sustainable solutions in the construction industry and identifies the limitations of traditional concrete production methods. The objectives of the study are outlined, including the evaluation of the mechanical properties, durability, and environmental impact of concrete mixes containing recycled aggregates. The literature review chapter presents a comprehensive analysis of existing studies related to the use of recycled aggregates in concrete production. Key topics discussed include the properties of recycled aggregates, the effects of incorporating recycled materials on concrete performance, and the environmental implications of using recycled aggregates. The chapter also reviews various mix design methods and optimization techniques to achieve sustainable concrete mixes with recycled aggregates. The research methodology chapter outlines the experimental approach adopted to investigate the performance of concrete mixes containing different proportions of recycled aggregates. The methodology includes material characterization tests, mix design calculations, and mechanical testing to assess the compressive strength, flexural strength, and durability properties of the concrete samples. The chapter also describes the experimental setup, data collection procedures, and analysis methods used to evaluate the performance of the concrete mixes. The discussion of findings chapter presents the results of the experimental testing conducted on the concrete samples with varying percentages of recycled aggregates. The findings include the effects of recycled aggregate content on the mechanical properties and durability of the concrete mixes. The chapter also discusses the implications of the results in terms of sustainability, cost-effectiveness, and performance criteria for sustainable concrete production. In conclusion, this thesis highlights the potential for developing sustainable concrete mix designs by incorporating recycled aggregates. The research findings demonstrate that utilizing recycled materials in concrete production can contribute to reducing environmental impact while maintaining acceptable performance standards. The study emphasizes the importance of optimizing mix designs to achieve the desired balance between sustainability and performance in concrete construction. Overall, this research contributes to the ongoing efforts to promote sustainable practices in the construction industry through the use of recycled aggregates in concrete production.