Current Trends in Science and Technology

an Open Access Publication ISSN: 0976-9730 | 0976-9498

Engineering and Technology

Performance and Properties of M30 and M35 Grade of Concrete Mixed with Waste Concrete as a Course Aggregate

Rajendra S. Narkhede, Dr.G.R.Selokar , Dr.Ashok L.Varne
1Department of Civil Engineering, SSSUTMS, Sehore, Madhya Pradesh, India 2Department of Civil Engineering, K.K.Wagh Institute of Engineering Education and Research, Nashik, Maharashtra *Correspondence Author:
Online First: November 24, 2017
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Demolition of old buildings produces a large amount of waste material around the world. Out of various types of construction and demolition waste, concrete constitutes about 80% of the waste. The volume of the waste concrete has reached an unacceptable limit and also The depletion of supply of good quality aggregates in certain area, the problem of suitable method of solid waste disposal together with environmental, economic and energy consideration are some of the factor which encourage the recycle of waste concrete as aggregates in new concrete. In order to reduce the use of natural aggregate, recycled aggregate can be used as replacement aggregate. An attempt has been made to compare the properties of the aggregates obtained from the demolished waste concrete. In the present experimental work, it has been decided to conduct studies on two mixes of concrete namely, M30 and M35 which are generally and widely used in practice. The main purpose of this analysis is to find out up to what percentage natural coarse aggregate can be replaced by recycled aggregates. The recycled coarse aggregates are mixed in different percentage 0 %, 25%, 50%, 75%, and 100% along with the natural aggregates. The effect on the properties of concrete for each type of mix is studied by using recycled aggregates in various percentages along the natural aggregates. A chain of tests were carried out to determine the workability, compressive strength, flexural strength and density.

Keyword : Recycled aggregates, Mix design, Workability, Compressive strength, Flexural strength.

Nov 24, 2017
Nov 24, 2017
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