© 2023, IRJET | Impact Factor value: 8.226 | ISO 9001:2008 Certified Journal | Page 885 Experimental Study on Partial Replacement of Coarse Aggregate with Over Burnt Bricks in Pervious Concrete Mr. Dhruv Vijayvargiya 1 , Mr. Aakash Suthar 2 1 Student, Master in Structural Engineering, L.J.I.E.T, Gujarat, India 2 Assistant Professor, Structural Engineering Department, L.J.I.E.T, Gujarat, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract – The research focuses on using overburnt brick aggregate as a sustainable and cost-effective alternative material for pavement construction. This study looks at pervious concrete, which is recognized for its ecologically benign and hydrologically sustainable properties. Several design parameters, including as aggregate gradation, water-cement ratio, and fine aggregate percentage, are investigated to determine their influence on the mechanical strength and pore characteristics of pervious concrete mixes. Prediction equations are constructed based on statistical analysis of experimental data to estimate the porosity, permeability, and compressive strength of these mixtures. This study advances the understanding and utilization of overburnt brick aggregate as a sustainable choice in construction, notably for pavement systems. The data given here provide important information for developing and implementing pervious concrete mixture Key Words: Pervious Concrete, Over Burnt Bricks, Compressive Test 1.INTRODUCTION Concrete, a frequently used artificial material in building, is made up of cement, sand, coarse aggregate, and water. Due to the escalating cost of cement and sand, it is necessary to investigate less expensive alternatives. This research will look at the impacts of partially substituting cement and sand with waste products like fly ash and stone dust. The study aims to achieve equivalent performance in terms of overall building quality with these substitutes. Finding sustainable alternatives becomes increasingly important as natural resources decrease and CO2 levels grow. River sand, a key component of concrete strength, is being replaced with stone dust, and fly ash is being utilized in place of cement. Varying quantities of fly ash and stone dust are tested to see how they affect flexural and compressive strength. By deploying new materials as partial replacements in concrete buildings, the research hopes to contribute to environmental preservation and cost reduction in construction. 2. Material properties Pervious concrete is a porous type of concrete designed for water permeability. It comprises overburnt bricks, fly ash, cement, coarse aggregate, fine aggregate, and water. Overburnt bricks replace some coarse aggregate, providing voids for water flow. Fly ash enhances strength and permeability. Cement acts as a binding agent, while coarse aggregate consists of larger particles and fine aggregate consists of smaller particles, improving strength and workability. Water hydrates the cement, forming a solid structure. Pervious concrete benefits stormwater management, reduces runoff, and promotes groundwater recharge. It finds applications in parking lots, sidewalks, and green infrastructure. 2.1 Cement Cement is a binding agent that holds the concrete mixture together. It reacts with water to form a paste that hardens over time, providing strength to the pervious concrete. 2.2 Fine Aggregate Fine aggregate consists of smaller particles, such as sand. It helps fill the gaps between the larger particles, improving the overall strength and workability of the pervious concrete mixture. 2.3 Coarse Aggregate Coarse aggregate consists of larger particles, such as crushed stone or gravel. In pervious concrete, overburnt bricks are sometimes used as a partial replacement for coarse aggregate to create voids and promote water infiltration. 2.4 Fly Ash Fly ash is a byproduct of coal combustion in power plants. It is commonly used as a supplementary cementitious material in concrete production. In pervious concrete, fly ash is often added to the cement mixture to enhance its strength, durability, and permeability. 2.5 Over Burnt Bricks These are bricks that have been subjected to high temperatures during the manufacturing process, resulting in a darker color and increased porosity. They are used as a partial replacement for traditional coarse aggregate in International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 10 Issue: 06 | Jun 2023 www.irjet.net p-ISSN: 2395-0072