Efficiency of an Innovative Self-Healing System in Ultra-High-Strength Concrete under a Salt Spray Test

G. Pérez, J. L.García Calvo, P. Carballosa, V. Rodríguez Allegro, J. J. Gaitero, E. Erkizia, A. Guerrero

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

Ultra-high strength concretes (UHSC) with self-healing system based on the combined action of two additions have been developed in order to seal developing cracks, thus improving their long-term durability. The present work evaluates the efficiency of the self-healing system in aggressive environmental conditions with chloride attack. UHSC with and without the addition of the self-healing system were fabricated and cracked at 28 days of curing considering two crack width. Once cracked, the specimens were subjected to a salt spray test during 90 days and, after that, they were characterized by means of capillarity tests and colorimetric methods (chloride penetration evaluation). Unlike in the concretes without the self-healing system, the initial water absorption rate of the cracked specimens of self-healing concretes is similar to that of the corresponding un-cracked samples and almost insensitive to the crack width, thus confirming a robust self-healing mechanism that even limits chloride penetration.

Original languageEnglish
Title of host publicationCONCREEP 2015
Subtitle of host publicationMechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures - Proceedings of the 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures
EditorsJohann Kollegger, Christian Hellmich, Bernhard Pichler
PublisherAmerican Society of Civil Engineers (ASCE)
Pages919-928
Number of pages10
ISBN (Electronic)9780784479346
DOIs
Publication statusPublished - 2015
Event10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures, CONCREEP 2015 - Vienna, Austria
Duration: 21 Sept 201523 Sept 2015

Publication series

NameCONCREEP 2015: Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures - Proceedings of the 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures

Conference

Conference10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures, CONCREEP 2015
Country/TerritoryAustria
CityVienna
Period21/09/1523/09/15

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