PSI - Issue 70

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

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Mahyuddin Ramli (2013) explored how incorporating short coconut fibres into high-strength concrete can mitigate crack development in marine structures exposed to aggressive environments like seawater. The experimental study concluded that incorporating up to 1.2% coconut fibre in concrete improves compressive strength by up to 13%, enhances durability in tropical climates, and reduces damage from expansion and shrinkage. However, higher fibre content increases the permeability and limits long-term performance in aggressive environments like seawater. Katrina and Thomas (2013) have examined the features of recycled concrete aggregates, their impact on the qualities of concrete materials and the wider implications of RCA on structural elements. Recycled concrete aggregates (RCA) in concrete lead to a decrease in compressive strength while either preserving or improving splitting tensile strength. Tests on full-scale beams show that RCA beams demonstrate increased midspan deflections and tighter crack spacing; however, their performance stays within acceptable limits, and the ultimate moment is not influenced by the presence of RCA. Patrick Coughlin (2012) carried out infiltration and clogging tests by clay and sand in pervious concrete. Test findings indicated that even after obstruction, the rate of infiltration remained higher than the average level of intensity of the applicable storm design. Aamer Rafique Bhutta et.al. (2012) made high-performance porous concretes with three sizes of coarse particles using the ideal combination proportions. 8. Conclusion 1. This review consolidates the usage of eco-friendly materials in drainage system. Pervious concrete helps in efficient water infiltration and reduces runoff. 2. Coconut fibre enhances structural performance and durability. Recycled concrete aggregate support circular construction while lowering carbon emissions. Swales provide good performance in runoff through biofiltration. 3. All these approaches provide cost effective and environmentally responsible alternatives to conventional drainage system. There is a need to examine long term performance, field studies and design practices. 4. The investigation of environmentally friendly drainage systems that use sustainable materials shows how promising these creative approaches are for improving urban water management and advancing environmental sustainability. 5. By lowering surface runoff and promoting water infiltration, pervious concrete drainage slabs can effectively reduce the danger of flooding and enhance groundwater recharge. In a similar vein, swales are essential parts of green infrastructure, efficiently controlling stormwater through organic processes that improve water quality and support biodiversity. 6. By recycling waste materials, the incorporation of recycled concrete aggregate not only promotes resource conservation but also lessens the carbon footprint linked to conventional concrete manufacturing. 7. Additionally, using slabs reinforced with natural fibres offers a viable way to improve drainage systems' performance and longevity while reducing their dependency on artificial materials. 8. Taking everything considered, these environmentally friendly methods work together to create resilient urban settings that emphasize on ecological balance and sustainability. 9. Future studies should keep concentrating on improving these systems and materials, evaluating their long term effectiveness, and looking into more creative approaches that support sustainable development objectives. Urban planners and engineers may greatly improve drainage system performance and promote a more sustainable future by using such methods. 10. Usage of sustainable materials reduces CO2 emission, reduces waste since the waste materials are reused and reduces Construction and Demolition waste. 11. Eco-friendly materials in drainage systems reduces stormwater runoff, lowers flood risk, reduces cost in urban areas. References Ahmad, M., Jamal, Mohd Sam, 2019. Green technology and sustainable urban drainage systems using eco-composite porous concrete: A preliminary study. IOP Conference Series: Earth and Environmental Science 220, 012039. Ali, M., Liu, A., Sou, H., Chouw, N., 2012. Mechanical and dynamic properties of coconut fibre reinforced concrete. Construction and Building