Self-healing concrete full-scale site trials

Oliver Teall, Robert Davies, Martins Pilegis, Antonios Kanellopoulos, Trupti Sharma, Kevin Paine, Anthony Jefferson, Robert Lark, Diane Gardner, Abir Al-Tabbaa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

The development of a self-healing concrete aimed at improving the durability of concrete structures has been the focus of Materials for Life (M4L), a 3 year research project conducted by the universities of Cardiff, Bath and Cambridge. This interdisciplinary research has culminated in the UK’s first site trial of self-healing concrete on the A465 Heads of the Valleys section two project in South Wales hosted by one of the main industrial sponsors Costain Group Plc. The trial, which follows on from a series of small-scale laboratory experiments, comprises a number of concrete wall panels which contain combinations of the self-healing techniques studied during the project. These techniques include (i) encapsulation of healing agents led by Cambridge University, (ii) healing via bacterial action led by Bath University, and (iii) the use of shape memory polymer (SMP) based systems for crack closure and delivery of healing agents through vascular flow networks by Cardiff University. This paper presents the design, methodology and initial results of the site trial. The degree of self-healing is quantified via visual measurements of the crack aperture. An insight is offered into which of the combinations of techniques has shown the most promise for a selfhealing concrete solution for use within the construction industry. At a later stage of the project the regain in mechanical load and stiffness after damage and the reduction in permeability compared to that of the damaged concrete will also be assessed.

Original languageEnglish
Title of host publicationProceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016
EditorsKoichi Maekawa, Jun Yamazaki, Akio Kasuga
PublisherA.A. Balkema Publishers
Pages639-646
Number of pages8
ISBN (Electronic)9784990914806
Publication statusPublished - 1 Jan 2016
Event11th fib International PhD Symposium in Civil Engineering, FIB 2016 - Tokyo, Japan
Duration: 29 Aug 201631 Aug 2016

Publication series

NameProceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016

Conference

Conference11th fib International PhD Symposium in Civil Engineering, FIB 2016
CountryJapan
CityTokyo
Period29/08/1631/08/16

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Teall, O., Davies, R., Pilegis, M., Kanellopoulos, A., Sharma, T., Paine, K., Jefferson, A., Lark, R., Gardner, D., & Al-Tabbaa, A. (2016). Self-healing concrete full-scale site trials. In K. Maekawa, J. Yamazaki, & A. Kasuga (Eds.), Proceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016 (pp. 639-646). (Proceedings of the 11th fib International PhD Symposium in Civil Engineering, FIB 2016). A.A. Balkema Publishers.