Next Article in Journal
The Utilization of Graphene Oxide in Traditional Construction Materials: Asphalt
Next Article in Special Issue
A Novel Design of Autonomously Healed Concrete: Towards a Vascular Healing Network
Previous Article in Journal
Processes of Fatigue Destruction in Nanopolymer-Hydrophobised Ceramic Bricks
Previous Article in Special Issue
Experimental Study on Mechanical Properties and Porosity of Organic Microcapsules Based Self-Healing Cementitious Composite
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Materials 2017, 10(1), 46; doi:10.3390/ma10010046

Ultrasonic Monitoring of the Interaction between Cement Matrix and Alkaline Silicate Solution in Self-Healing Systems

1
Department of Applied Science and Technology, Condensed Matter and Complex Systems Physics Institute, Politecnico di Torino, 10129 Torino, Italy
2
Laboratoire de Physique des Matériaux, Université des Sciences et de la Technologie Houari Boumediene, BP 32 El Alia, Bab Ezzouar 16111, Algeria
3
Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, 10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Nele De Belie
Received: 22 November 2016 / Revised: 23 December 2016 / Accepted: 3 January 2017 / Published: 7 January 2017
(This article belongs to the Special Issue Self-Healing Concrete)
View Full-Text   |   Download PDF [1753 KB, uploaded 7 January 2017]   |  

Abstract

Alkaline solutions, such as sodium, potassium or lithium silicates, appear to be very promising as healing agents for the development of encapsulated self-healing concretes. However, the evolution of their mechanical and acoustic properties in time has not yet been completely clarified, especially regarding their behavior and related kinetics when they are used in the form of a thin layer in contact with a hardened cement matrix. This study aims to monitor, using linear and nonlinear ultrasonic methods, the evolution of a sodium silicate solution interacting with a cement matrix in the presence of localized cracks. The ultrasonic inspection via linear methods revealed that an almost complete recovery of the elastic and acoustic properties occurred within a few days of healing. The nonlinear ultrasonic measurements contributed to provide further insight into the kinetics of the recovery due to the presence of the healing agent. A good regain of mechanical performance was ascertained through flexural tests at the end of the healing process, confirming the suitability of sodium silicate as a healing agent for self-healing cementitious systems. View Full-Text
Keywords: self-healing concrete; sodium silicate; cracks; NDT; nonlinear ultrasonic inspection; scaling subtraction method self-healing concrete; sodium silicate; cracks; NDT; nonlinear ultrasonic inspection; scaling subtraction method
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Ait Ouarabi, M.; Antonaci, P.; Boubenider, F.; Gliozzi, A.S.; Scalerandi, M. Ultrasonic Monitoring of the Interaction between Cement Matrix and Alkaline Silicate Solution in Self-Healing Systems. Materials 2017, 10, 46.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top