Development and testing

Concrete with properties to repair itself –

The development of cementitious materials exhibiting properties to heal or seal, respectively, cracks is an actual topic, while autogenous healing mechanisms – in regard to fractures with water penetrating through them – were intensively investigated earlier (Yang et al. 2009; Edvardsen 1996; Jooß 1999). Some of the mechanisms are the expansion of the cementitious matrix, post-hydration or carbonization of cement via the formation of calcium carbonate. However, it is known that only small cracks can be healed by these autogenous healing mechanisms and other techniques are required (Van...

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