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FREQUENTLY ASKED QUESTIONS
What is self-healing concrete?
Self-healing concrete is precast and cast-in-place concrete that repairs itself (without human intervention) when cracks appear. The technology works with micro-organisms that produce limestone. In this way, the durability of the concrete is greatly improved. Self-healing concrete is available in various products for new concrete constructions and restoration of existing concrete structures.
How does self-healing work?
Why self-healing concrete?
That concrete inevitably develops cracks, and even slight cracks (up to 0.2 mm), that are generally permissible can lead to significant problems. To prevent them from expanding a substantial amount of steel reinforcement is necessary. A self-healing agent in new concrete heals cracks up to 1 mm, prevents steel corrosion, and prolongs the lifespan of reinforced steel structures while reducing the amount of structural steel required. Self-healing concrete is waterproof because cracks in the concrete repair themselves as soon as they occur. As a result, any special coatings or waterproof membranes are normally not required.
What are the benefits of using self-healing concrete?
Self-healing concrete offers watertight protection, safeguards reinforcement, reduces the CO2 footprint, and is easy and quick to apply.
Self-healing cracks in existing concrete?
Traditional repair methods of cracks and leaks in concrete structures such as injections are more expensive, time-consuming and more difficult to apply to narrow concrete cracks. Due to its low viscosity, Liquid Self-Healing Agent easily penetrates even the smallest cracks and forms a gel that seals cracks and pores. During the self-healing process, the environmentally friendly bacteria create limestone, permanently filling the crack and healing the surface = cracks repair themselves.
Is self-healing concrete sustainable?
Self-healing concrete is a lot more sustainable than conventional concrete. Up to 40% less steel reinforcement is needed, and the CO2 footprint is reduced by 30-50%. Self-healing concrete is durable, and long-term maintenance costs are lower than conventional concrete.
What structures is the self-healing agent suitable for?
Self-healing concrete is a viable and sustainable material for bridges, marine structures (water dams), tunnels, and other concrete structures. It extends the lifespan of a reinforced concrete structure to over 100 years.