Thesis abstract:

«p style="text-align:justify"»The research focuses on addressing sewer corrosion induced by microbiologically influenced corrosion (MICC) by developing specialty concrete from repurposed waste to enhance the durability of sewer structures. By utilizing repurposed waste and mine tailings, the study aims to reduce carbon emissions and waste generation while combating aggressive environments in sewer infrastructure. The use of calcium aluminate cement (CAC) and geopolymer instead of conventional cement is proposed to help mitigate atmospheric CO2 levels. The methodology involves rigorous material selection and characterization following Australian standards. Various tests, including structural, toxicity, serviceability, performance-based, and environmental impact assessments, will be conducted to evaluate the effectiveness of the specialty concrete. Precast access chambers will be deployed in the field for corrosion monitoring and field testing. Beyond corrosion mitigation, the research has broader implications, including the development of educational modules and the potential commercialization of access chambers. Future research directions may explore the application of specialty concrete in diverse infrastructure projects, expanding the scope of sustainable construction practices.«/p»