• Dr. Umesh Chand
• Dr. S.K.Duggal

In the civil engineering construction field concrete is the prime material of construction which provides durability, easy maintenance, wide range of properties and adaptability to any shape and size to the structure. Concrete, in general have two type ingredients namely active and inactive. The active part of the cement is water and cement where as inactive part contains the coarse aggregate and sand. In the aggressive environment condition the waste materials after dismantling a structure is a problem to decompose but this problem can be minimized by using recycle material in construction. In the present research waste concrete of a building was crushed to desired size and basic properties of this crushed waste concrete was compared with natural concrete. It is really surprising to know that the compressive strength as well as flexural strength of the crushed recycle concrete was at par with the natural concrete. In fact, mechanical strength is influenced by the grade of the original concrete. Workability was noticed to be reducing in the waste concrete but can be of higher value by adding admixture in it.

Recycle concrete, Characteristic strength, aggregate,

" A study for characteristic strength of construction demolished waste materials ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 9, page no.723-727, September-2017, Available :http://www.jetir.org/papers/JETIR1709108.pdf

" A study for characteristic strength of construction demolished waste materials ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 9, page no. pp723-727, September-2017, Available at : http://www.jetir.org/papers/JETIR1709108.pdf