DBPapers
DOI: 10.5593/sgem2017/62/S26.012

DESIGNING SELF-COMPACTING FIBRE REINFORCED CONCRETE COMPOSITIONS BY OPTIMAL MATERIALS SYNTHESIS

H. SZILAGYI, C.BAERA, M.PASTRAV, O. GHERMAN, H.CONSTANTINESCU
Tuesday 12 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-13-3 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 62, 89-96 pp, DOI: 10.5593/sgem2017/62/S26.012

ABSTRACT

Self-compacting fibre reinforced concrete summarizes both the advantages of selfcompacting concrete: reducing environmental noise pollution, faster construction time, improved quality of concrete surfaces etc., as well as the fibres benefits: better mechanical performance, ductile failure and so on. Self-compacting fibre reinforced concrete is not currently used in Romania especially due to the lack of normative research respectively the national regulations in this particular field. One of the national research programs, whose purpose is filling up this gap, is developed at N.I.R.D. URBAN-INCERC Cluj-Napoca Branch and it is focused on fundamental, experimental and industrial research regarding the concept, technology and specific properties of the self-compacting fibre reinforced concrete with self-healing potential. The project’s first two research stages have been conducted in order to identify optimal materials for selfcompacting steel or polymer fibre reinforced concrete compositions and preliminary experimental development of self-compacting reinforced concrete without coarse aggregate. Different filler types (slurry or powder, natural or waste - materials) evaluation was performed for the purpose of potential local sources identification. In the same time steel, glass and polymeric fibres rating was carried out for achieving the optimal range of materials in self-compacting reinforced concrete mixes. In the process of laboratory casting, for the initial experimental mixes, homogeneity and fibres congestion avoiding was another important goal of preliminary research. It can be concluded that raw materials (filler additions, fibres and admixtures) properties, laboratory mixing technology and the role of a proper fibre-matrix compatibility have a major influence in designing optimal self-compacting fibre reinforced concrete.

Keywords: sustainable design, green building material, energy-saving technologies