Paper Title
Green Drainage Concrete: A Sustainable Solution for Outdoor Sports Courts

Abstract
Waste tyre disposal is a growing global environmental concern, with billions of tyres discarded annually and limited recycling efforts. This study investigates the use of waste tyre rubber as a partial replacement for natural aggregates in permeable concrete, referred to as recycled rubber pervious concrete, for outdoor sports court applications. The proposed material aims to reduce surface water accumulation after rainfall, thereby improving player safety. Various mix proportions are evaluated to achieve an optimal balance between permeability and mechanical strength. Performance is assessed through infiltration rate, void ratio, permeability, and compressive strength tests, alongside the evaluation of suitable drainage system designs. Results indicate that recycled rubber pervious concrete enhances surface drainage while contributing to sustainable waste management. This approach offers a practical and environmentally friendly solution for safer and more resilient outdoor sports facilities. Keywords - Green Drainage Concrete, Concrete mixing ratio, Waste tyre rubber disposal, Outdoor sport court, Drainage system.