DBPapers
DOI: 10.5593/SGEM2014/B62/S26.017

ENGINEERED CEMENTITIOUS COMPOSITES (ECC) – SELF-HEALING POTENTIAL BY CRACK CONTROL MEANS

C. BAERA, M. PASTRAV, H. SZILAGYI, C. MIRCEA, C. DICO, Dr. O. Corbu, H. CONSTANTINESCU
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-21-6 / ISSN 1314-2704, June 19-25, 2014, Book 6, Vol. 2, 191-136 pp

ABSTRACT
Cracks in concrete elements are considered the main cause for beginning and further development of concrete structures deterioration. In the reality where concrete and generally cement-based materials represent the most widely used building materials, the large amounts of concrete civil infrastructure that requires repairs and maintenance constitute huge consumption of economic and energetic resources. The numbers are impressive: 18 to 21 billion US dollars annual cost for infrastructure repair only in USA, according to specialized data [1]. The green drive of the last decades, after general awareness that resources are not renewable and they have to be saved as much as possible, encouraged development of new, intelligent building materials, with improved physico-mechanical and durability characteristics, necessary for building-up a sustainable future. In the category of High-performance fibre-reinforced cementitious composites (HPFRCC) there was developed a new concept of cementitious material capable of developing a quite important self-healing behaviour due to its crack control well developed design: Engineered Cementitious Composites, a self-compacting mortar characterized by induced microcracking metal like behaviour under the applied load [2]. The aim of this paper is to present a state-of-the-art evaluation regarding ECC materials: development, design criteria, evolution and potential of ECC as building material for a long-term energy and resources saving civil infrastructure.

Keywords: concrete cracks, energy saving, Engineered Cementitious Composites (ECC), crack control, self-healing capacity