PSI - Issue 70

Charumathi Manickam et al. / Procedia Structural Integrity 70 (2025) 564–571

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3. Factors on climate change Eco-drainage systems offer an innovative strategy for managing stormwater in urban environments, aiming to alleviate the negative impacts of climate change while bolstering urban resilience. As climate change results in unpredictable weather patterns, including heavier rainfall and flooding, conventional drainage systems frequently fail to manage these challenges effectively. This inadequacy can lead to urban flooding and deteriorating water quality. Eco-drainage systems are designed to integrate more naturally with the environment, mimicking natural hydrological processes to enhance water management and reduce runoff, thereby addressing both flooding and pollution issues effectively, by Faram et.al. (2002) 4. Reduced carbon footprint Traditional concrete production is resource-intensive, contributing significantly to greenhouse gas emissions. By partially replacing cement with natural coconut fibre, Coconut Fibre Reinforced Concrete slabs reduce the demand for cement, lowering the carb on footprint. Coconut Fibre Reinforced Concrete can reduce CO₂ emissions by up to 10% in slab applications, contributing to more sustainable construction practices, by Habibunnisa Syed et al. (2020) 5. Swales drainage system Swales are linear, shallow channels created to efficiently control stormwater drainage in urban settings. Surface water is transported, stored, and treated by these vegetative systems, among other uses. Swales lessen the negative effects of urbanization on the amount and quality of water by simulating natural drainage processes. Swales can efficiently manage stormwater from various design storms, typically using a 10-year annual recurrence interval as a standard. To enhance design efficiency, a portion of surface runoff should be infiltrated. The effectiveness of grass swales may be constrained by the infiltration capacity of underlying soil, particularly in low-permeability soils, by Sujit.A.Ekka et.al.(2021). Depending on variables like soil moisture content and input rates, swales can reduce runoff volume by 30% to 87%. Water quality is improved by dense vegetation in swales, which helps trap sediments and particle contaminants. The capacity of wet swales to preserve wetland conditions at the base further enhances the efficacy of pollutant removal. The kind of soil and moisture content have a significant impact on the infiltration capacity. Although there are many recommended swale lengths, research indicates that lengths above 60 meters with slopes under 3% maximize performance. Smaller aggregate sizes in pervious concrete mixes result in poorer permeability than larger aggregate sizes since interconnected pore size is the primary determinant of permeability. The permeability significantly decreased in tandem with the decrease in angularity number, both in the presence and absence of fine aggregate. Every mix has permeability values ranging from 0.401 cm/sec to 1.258 cm/sec, which is enough for a pavement drainage layer, by Uma Maguesvari et.al. (2013) The permeability values of pervious concrete ranged from 0.25 to 3.3 cm/s, indicating that it is suitable for use as a drainage layer in porous concrete blocks or pavement systems. The gradation of the aggregates always influenced permeability; smaller aggregate sizes led to reduced permeability. Furthermore, the influence of cohesive agent on permeability was similar to that on total void ratio of high-performance pervious concrete, by Bhutta et.al. (2012). Since smaller aggregate sizes make up less mix void space, decreased permeability in pervious concrete is usually linked to an increased binder volume fraction. By improving adherence of Recycled Aggregate to the modified paste, Steryene-butadiene Latex produces a denser structure. Although permeability is decreased by Steryene-butadiene Latex (SBL), this change is negligible and unlikely to have an impact on real-world 6. Parameters considered for performance of drainage systems 6.1 Permeability