This paper presents reviews of the authors for the use of construction and demolished waste of building in concrete as recycled coarse aggregates. It is observed that from many years ago that the peoples of rural areas shifted from villages/small towns to developed city centers. Due to this huge number of migration of peoples creates problems accommodations and their basic needs. For the solution of accommodation and other problems demolish old structures and construction will shift from horizontal to vertical space such as: high rise building. However, demolition of old structures creates many issues and for the solution those issues on and only the better option of reused of Construction & Demolition waste as in green concrete. The views of the several authors and construction industry are the utilization by consuming it in new concrete in various ways. Replacement of fine aggregates, coarse aggregates and even cement has been attempted. Green concrete is produced by replacing natural coarse aggregates in 50% dosage with coarse aggregates obtained from demolished old concrete which was suggested by the several authors. Use of recycled in concrete has not much effect on the basic properties (specific gravity, water absorption, unit weight and density) of Recycled coarse aggregates comparison with natural coarse aggregates. Therefore, the use of this waste in new concrete not only helps in reducing the waste management issues but also help to protect the environment greatly.

A.H. Buller, B.A. Memon, I.N. Sodhar,M. Oad & A.S. Buller."Reuse Of Construction and Demolished Waste as Aggregates in Concrete: A Review". International Journal of Computer Engineering In Research Trends (IJCERT) , ISSN:2349-7084, Vol.7, Issue 08,pp.41-48, August - 2020, URL:http://ijcert.org/ems/ijcert_papers/V7I807.pdf,

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