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UTILIZATION POSSIBILITIES OF SELECTED WASTE KINDS IN BUILDING MATERIALS PREPARING

N. Stevulova, V. Vaclavik, J. Junak, R. Grul, M. Bacikova

First published: 2008DOI pendingView metrics

Abstract

The utilization possibilities of secondary raw materials in civil engineering are presented in this paper. Three various solid waste kinds were tested as a partial cement or natural aggregate material replacement in construction applications. The influence of mechanically and chemically activated coal fly ash as 25 wt. \% cement replacement and steel slag and recycled concrete as aggregate fraction replacement on compressive strength development of composites during hardening was investigated. The addition of the mechanically and chemically activated coal fly ash in concrete led to the higher compressive strengths of composites after 28- and 90 days hardening in comparison to the referential composites prepared without coal fly ash. The compressive strength values of experimental composites with a replacement of natural aggregate fraction by steel slag (fractions 4-8 and 8-16 mm) and recycled concrete (fraction 8/16mm) after hardening were higher than value for referential composites with conventional aggregates. Composites with cement and aggregate replacement meet the technical standard requirements and are useable as low-strength concrete.

Publication details

Title
UTILIZATION POSSIBILITIES OF SELECTED WASTE KINDS IN BUILDING MATERIALS PREPARING
Authors
N. Stevulova, V. Vaclavik, J. Junak, R. Grul, M. Bacikova
Proceedings
8th International Scientific Conference - SGEM2008
Publisher
SGEM Scientific GeoConference
Year
2008
Pages
193-200
SWS Citekey
Stevulova2008193200
ISSN
Not available yet
ISBN
954-91818-1-2
Language
en
Publication type
Conference Paper
Keywords
coal fly ashcompressive strengthconcrete mixturenatural aggregaterecycled concretesteel slag
References19

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