Chloride transport under compressive load in bacteria-based self-healing concrete

Chloride transport under compressive load in bacteria-based self-healing concrete

Binti Md Yunus, B.
Schlangen, E.
Jonkers, H.M.

Civil Engineering and Geosciences

Structural Engineering

2015-12-31

An experiment was carried out in this study to investigate the effect of compressive load on chloride penetration in self-healing concrete containing bacterial-based healing agent. Bacteria-based healing agent with the fraction of 2 mm – 4 mm of particles sizes were used in this contribution. ESEM was applied to study samples which were taken by cutting the area of prisms in contact with the chloride solution and together with LIBS method to measure the total chloride content of bacterial concrete. Three load parameters of the compressive load are proposed to describe the phenomena of chloride transportation in bacterial concrete by which the results in prediction analysis of concrete performance within service life were much affected by different percentage of mechanical damage. It was found that the particles sizes of healing agent used leads to more porous-structure of concrete, subsequently affect the transport rate of chloride in concrete. Nevertheless, this investigation indicates that bacteria-based healing agent can still be considered as a measure of protection to concrete under combined action.

http://resolver.tudelft.nl/uuid:55cb6817-7fe8-4c7c-862c-44786737c87a

Proceedings of the 5th International Conference on Self-Healing Materials, ICSHM, Durham, USA, June 22-24, 2015. Extended abstract

Institutional Repository

conference paper

(c) 2015 The Author(s)