Using waste concrete as aggregate

When restrictions severely limit local access to concrete aggregate, broken pieces of waste concrete (WCA) are used as aggregate. Today environmental studies discussing the recycling and reuse of waste materials are gaining great importance. Using waste material which was obtained from razed buildin...

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Bibliographic Details
Published in:Cement and concrete research 1995, Vol.25 (7), p.1385-1390
Main Authors: TOPCU, I. B, GÜNCAN, N. F
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Environmental protection
Exact sciences and technology
Materials
Q1
Recovery materials
Recycling
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Summary:When restrictions severely limit local access to concrete aggregate, broken pieces of waste concrete (WCA) are used as aggregate. Today environmental studies discussing the recycling and reuse of waste materials are gaining great importance. Using waste material which was obtained from razed buildings that was cleaned and later reduced to aggregate form, is considered an appropriate solution to environmental pollution. In this study, various mechanical properties of concretes were examined. These concretes were obtained with the addition of C 16 (28-day compressive strength of 16 MPa) pieces as aggregate in weight percentages of (referred to total aggregate) 0, 30, 50, 70 and 100 %. From σ − ε diagrams modulus of elasticity, toughness, plastic and elastic energy capacities were calculated. In the concretes, it was observed that as the amount of WCA increases, density, compressive strength, modulus of elasticity and value of toughness decrease.
ISSN:0008-8846
1873-3948
DOI:10.1016/0008-8846(95)00131-U