ACTIVE MINERAL ADDITIVES AND THEIR CONTRIBUTION TO NATURAL SELF-HEALING ABILITY OF CONCRETE

Author(s): Pavel Reiterman (1)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 1049-1052
Total Pages: 6
Language : English

Abstract: Reducing of maintenance costs of concrete structures have got into increased professional concern. The protection of existing structures is determined by their primary resistance to the action of the environment, secondarily by additional performance. Concrete is effective material with sufficient structural properties, however the efficiency of its use is essentially dependent on the level of maintenance costs. Present paper is focused on the experimental study dealing with primary resistance of concrete, which is determined by its composition and selection of particular components. The great potential for durability increase of structural concrete have various types of supplementary cementitious materials (SCM), which have beneficial effect on the durability and environment quality. There was studied influence of fly ash, ceramic powder and metakaolin addition. The properties of concrete are evaluated in terms of freeze-thaw resistance and mechanical properties. The experimental program
performed confirmed positive impact of active mineral additives on the frost resistance of concrete mixtures with SCMs addition. On the basis of results of residual mechanical properties during cycle freeze-thawing can be assumed, that cycle freeze-thawing could stimulate blended binding system to additional hydration, which led to the partial strengthening. This effect could create reserve leading to the increase of frost resistance.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00