Harmonizing project management and supply chain for sustainable construction: A comprehensive mathematical model and case study

The cornerstone of achieving sustainable project management success lies in the harmonious integration of its multifaceted aspects. The conventional approach of handling different project dimensions in isolation falls short of realizing true success. In this context, sustainability emerges as a central theme, driving our exploration of how "project management" and "supply chain" intersect within the realm of construction projects, with a primary focus on optimizing resource allocation, minimizing environmental impact, and promoting long-term economic stability. Our research endeavors to usher in a paradigm shift, one that aligns "project management" - encompassing considerations of time and cost - with the principles of sustainability. We introduce a comprehensive mathematical model designed to not only maximize project profitability but also enhance its adaptability and environmental conscientiousness. Recognizing the dynamic nature of project financing, we diligently account for the influence of interest rates and housing price fluctuations on revenue and expenses, ensuring that our model reflects real-world conditions. Furthermore, our model delves into the intricate balance between time and cost, particularly in situations where project schedules require acceleration while adhering to the project's original timeline. Through a nuanced analysis, we explore various scenarios, allowing for different strategies. This includes early ordering to mitigate delays at the potential cost of increased maintenance, or an intensified effort to compress activities, which might elevate compressing costs. Our objective functions are designed to identify the most optimal combination, considering both project efficiency and sustainability. In line with our commitment to sustainability, we conduct a thorough examination of environmental, social, and economic factors throughout the project lifecycle. This holistic approach ensures that our model aligns with sustainable practices and promotes eco-friendly construction methods while simultaneously fostering a positive social impact and preserving economic viability. To validate the real-world applicability of our model, we present a case study of its implementation in an actual construction project, demonstrating how sustainability principles can be translated into practical, actionable strategies for the betterment of construction projects and, ultimately, our environment and society.