International Journal of Innovative Research in Engineering & Management (IJIREM) ISSN: 2350-0557, Volume-10, Issue-2, April 2023 https://doi.org/10.55524/ijirem.2023.10.2.10 Article ID IJIR2357, Pages 53-59 www.ijirem.org Innovative Research Publication 53 Partial Replacement of RCA and LDPE in Bituminous Pavement Pramatma Ram Shah M. Tech Scholar, Department of Civil Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, India Correspondence should be addressed to Pramatma Ram Shah; ramshahpramatma2050@gmail.com Copyright © 2023 Made Pramatma Ram Shah. This is an open-access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly. ABSTRACT: Bituminous concrete mix is a composite material which is widely used for the construction of flexible pavements, surfacing of roads and airports, various parking lots etc. It generally consists of bitumen which works as a binder material, coarse aggregates, fine aggregates and filler materials which are generally mixed together in right proportion and laid down in layers followed by the compaction. In this present age of modernization and urbanization, construction is non stoppable and the construction by demolishing of old building has arisen a serious problem of treatment of demolished waste. Similarly, the use of plastic in our day- to-day life and its improper disposal is also creating serious environment pollution. So, there is big challenge in managing the demolished waste as well as the waste plastics. In this project i.e. partial replacement of RCA and LDPE in Bituminous concrete mix we have tried to replace the RCA (25%) in Natural Aggregates and LDPE (2%, 4%, 6% and 8% respectively) in bitumen content for the improvement of the pavement characteristics satisfying both the strength criteria and the economic aspectsgiving emphasize to less environment degradation and sustainability. KEYWORDS: Bituminous Concrete, Pavement, Rca, Ldpe, Subgrade, Sub-Base Course, Base Course, Binder Course, Prime Coat, Tack Coat, Seal Coat, Softening Point, Ductility, Penetration Value, Bulk Density I. INTRODUCTION This project has been developed for the reuse of the Low- density polyethylene and the Recycled concrete aggregate obtained from the demolition of the buildings. The main aim of this project is to replace the certain amount of Natural Aggregates and the bitumen by the RCA and LDPE respectively for the improvement of the Bituminous pavement characteristics satisfying both the strength criteria and the economic aspects giving emphasize to less environment degradation. In this project we have used LDPE in the partial replacement of Bitumen and checked whether it met the specifications and standard. LDPE used in this project has been obtained by converting the plastic (polythene bags, milk pouches, lotion bottles, eye drop bottles into smaller pieces of size less than (2.36mm). II. LITERATURE REVIEW The aim of this study [1] is to investigate the impact of using polymerized pellets as an additive to improve the properties of asphalt mix. The research compares the stiffness, rutting, fatigue, and thermal cracking resistance properties of asphalt mixtures modified with polymerized pellets to those containing unmodified and polymer- modified binders. The study focuses on evaluating the performance of a modified bituminous concrete mix that incorporates rubber and plastic waste materials. The objective is to utilize these waste materials as a partial replacement for bitumen in order to develop a modified binder for creating bituminous concrete mixtures. To simulate real-world conditions[2], the researchers conducted "Marshall Stability Analysis" on samples prepared by partially replacing the "Optimum Bitumen Content" with various percentages of waste plastic (4%, 6%, 8%, and 10%) and crumb rubber (5%, 10% and 15%). Experimental results demonstrate that partial substitution of bitumen with waste plastic results up to 16% increment in strength whereas with rubber material, about 50% increment in strength was observed as compared to the conventional mix (CM). The purpose of this study [3] was to investigate the engineering properties of asphalt mixtures incorporating different percentages (4%, 6%, 8%, and 10% by weight of bitumen) of waste plastic. The researchers conducted several experimental tests, including stability, tensile strength, resilient modulus, and dynamic creep tests. The results revealed important findings regarding the performance of the modified asphalt mixtures. The mixture containing 4% plastic additive exhibited the highest stability, with a value of 184 kN. However, as the percentage of plastic additive increased, the stability slightly decreased. In terms of tensile strength, the modified asphalt mixture with 8% plastic achieved the highest value of 1049 kPa. The research initially focused on investigating [4] the properties of bitumen when replaced with plastic and the properties of aggregates mixed with plastic. Subsequently, the researchers conducted Marshall Stability tests and flow tests using different percentages of plastic replacement. The study concluded that incorporating 15% plastic content by weight in bitumen resulted in an increase in the Marshall stability value, indicating improved resistance to permanent deformation under load. Additionally, the flow value decreased, indicating enhanced resistance to deformation. The aim of this study [5] to explore the potential of waste plastic and crumb rubber as partial replacements for conventional bitumen in road mixtures, with the goal of improving the desired mechanical properties. Specifically,