Reduction of water permeation through cracks in mortar by addition of bacteria based healing agent

Field performance of bacteria-based repair system: Pilot study in a parking garage

This paper presents the field performance in a parking garage of the recently developed bacteria-based repair system for concrete. This liquid-based repair system aims at the sealing of cracks and decrease of the porosity due to the production of a calcium-based biomineral. The system combines advantages of both a traditional repair system for...

Shear Resistance of Reinforced Concrete Beams without Shear Reinforcement under Sustained Loading

Development of self-healing granules having semi-capsulation effect by using cement compound, chemical/mineral admixtures & its watertight performance through crack

Granulation technique, introducing the self-healing ability to concrete, was developed by Koide, 2010 [1] based on the capsulation technology in the food/medicine industry. In this research, self-healing granules, containing cement compounds, chemical and mineral admixtures, were fabricated by a proposed granulation process and the capability of...

Resistance of cracked concrete healed by means of polyurethane against chloride penetration

A lot of damage is reported for constructions in marine environments. Marine environments are very aggressive, because of the high chloride concentration in sea water. Chlorides affect durability by initiating corrosion of the reinforcement steel. When cracks appear in the concrete structures, chlorides will penetrate faster and will initiate...