Impact Factor Value 5.856 e-ISSN: 2456-3463 International Journal of Innovations in Engineering and Science, Vol 5, No.9, 2020 www.ijies.net 1 Utilization of Demolished Concrete Waste for New Construction and Comparing Their Compressive Strength after 28 Days with Normal Aggregate Concrete Mrs. Bharti Manjhi 1 , Mrs. K Divya Kotecha 2 , Miss. Anisha Mire 3 , Dr.Lokesh Singh 4 1 PG Student, 2,3 Assistant Professor, 4 Head of Civil Department, RSR Rungta Engineering college, Bhalai DOI: 10.46335/IJIES.2020.5.9.1 Abstract – The mass production of construction and demolition are creating serious problems in India. In most of the countries applicability of construction and demolished wastes are restricted to non-structural concrete, pavements and backfilling. In present day Demolished Concrete waste handling and management is challenging one in all over the countries in the world. Recycle the demolished concrete has reduces the environmental pollution and protect the natural resources. In this research paper an experimental study is carried out to investigate the recycling of demolished waste concrete for new contraction. This research included a collecting a Demolished Concrete from waste and is separated with different sizes using sieve analysis. Various sizes of aggregate is treated with heating process. Finally the demolished concrete aggregate DCA is replaced by various percentage of 10%,20%,30%,50%,100% and test can be conducted and compared with nominal concrete. I. INTRODUCTION 1.1Background Concrete is versatile it’s durability, sustainability, and economy have made it the world’s most widely used construction material. About four tons of concrete are produced per person per year worldwide. The term concrete refers to a mixture of aggregates, generally sand, and either gravel or crushed stone, held together by a binding material of cementations paste. Understanding the fundamentals of concrete is necessary to produce quality concrete according to design for the construction of durable structure. 1.2 Essentials of Quality Concrete Workmanship, mix proportions, material characteristics, and adequacy of curing is related to performance of concrete. The production of quality concrete involves a variety of materials and a number of different processes including, the production and testing of raw materials, determining the desired properties of concrete, proportioning of concrete constituents to meet the design requirements, batching, mixing, and handling to achieve consistency, proper placement, finishing, and adequate consolidation to ensure uniformity, proper maintenance of moisture and temperature conditions to promote strength gain and durability, and finally, testing for quality control and evaluation.Many people with different skills come into contact with concrete throughout its production. Ultimately, the quality of the final product depends on their workmanship. It is essential that the workforce be adequately trained for this purpose. When these factors are not carefully