A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HEALCON : self-healing concrete to create durable and sustainable concrete structures
HEALCON is a project funded by EU-FP7 and coordinated by Prof. Nele De Belie (Ghent University). Its aim is to design smart concrete with self-healing properties to create durable and sustainable concrete structures. In a first phase of the project, different types of healing agents and encapsulation techniques have been developed and finalized. Depending on the type of damage, another self-healing concept was envisioned in the project. While superabsorbent polymers and bacterial healing agents are suitable for healing of early age cracks in structures which require liquid tightness since they produce a non-elastic material that fills the crack, elastic polymers can be used for healing of bending cracks since they can cope with the opening and closing movement of cracks under dynamic load. The efficiency of the different self-healing mechanisms with regard to mechanical behaviour, liquid-tightness and durability was firstly quantified at lab-scale. Besides, computer models were developed to simulate the fracturing and self-healing mechanisms in order to refine lab tests and to ultimately scale the mechanisms to an industrial level. Then, the most promising healing agents, for which the production could be easily up scaled, were incorporated in large scale elements (slabs and beams) to validate experimentally the self-healing methodologies. To characterize healing, non-destructive monitoring techniques have been used in the small and large scale tests. As the technologies developed have to be cost effective, functional and adaptable to engineering design, an end-user board followed the project from the start and helped to define technical and application requirements. Moreover, a life cycle cost analysis, supplemented by a life cycle assessment has been performed in order to demonstrate the impact of the self-healing technologies on environment and economy.
HEALCON : self-healing concrete to create durable and sustainable concrete structures
HEALCON is a project funded by EU-FP7 and coordinated by Prof. Nele De Belie (Ghent University). Its aim is to design smart concrete with self-healing properties to create durable and sustainable concrete structures. In a first phase of the project, different types of healing agents and encapsulation techniques have been developed and finalized. Depending on the type of damage, another self-healing concept was envisioned in the project. While superabsorbent polymers and bacterial healing agents are suitable for healing of early age cracks in structures which require liquid tightness since they produce a non-elastic material that fills the crack, elastic polymers can be used for healing of bending cracks since they can cope with the opening and closing movement of cracks under dynamic load. The efficiency of the different self-healing mechanisms with regard to mechanical behaviour, liquid-tightness and durability was firstly quantified at lab-scale. Besides, computer models were developed to simulate the fracturing and self-healing mechanisms in order to refine lab tests and to ultimately scale the mechanisms to an industrial level. Then, the most promising healing agents, for which the production could be easily up scaled, were incorporated in large scale elements (slabs and beams) to validate experimentally the self-healing methodologies. To characterize healing, non-destructive monitoring techniques have been used in the small and large scale tests. As the technologies developed have to be cost effective, functional and adaptable to engineering design, an end-user board followed the project from the start and helped to define technical and application requirements. Moreover, a life cycle cost analysis, supplemented by a life cycle assessment has been performed in order to demonstrate the impact of the self-healing technologies on environment and economy.
HEALCON : self-healing concrete to create durable and sustainable concrete structures
De Belie, Nele (author) / Gruyaert, Elke (author)
2016-01-01
HEALCON-Conference - Self-Healing Concrete for Prolonged Lifetime
Conference paper
Electronic Resource
English
DDC:
690
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