DURABILITY, WATERPROOFING AND SELF-HEALING FOR CONCRETE STRUCTURES
Penetron Italia Srl, exclusive distributor of the Penetron® System, has been operating since 2000 in the field of integral waterproofing of underground structures, promoting the “white tank” concept. This approach is based on a technical-systemic vision that integrates design, specialist support and full control of the construction process.
Concrete, a fundamental material for infrastructure, presents intrinsic critical issues related to porosity and cracking, which affect its actual durability. The gap between design service life and real performance leads to high maintenance costs and environmental impacts, making the LCA approach increasingly relevant. The goal is to enhance concrete performance through technologies capable of reducing permeability, limiting the ingress of aggressive agents and restoring microstructural continuity.
Penetron’s integral crystalline technology uses additives that react with moisture, cement hydration by-products and soluble elements, generating insoluble crystals (secondary C-S-H). These densify the matrix, seal pores and capillaries and promote progressive crack closure, even under cyclic stresses. Unlike natural autogenous healing, this process is engineered and reactivates in the presence of water.
The “white tank” makes concrete intrinsically waterproof, eliminating external membranes typical of the “black tank” and the associated risk of damage. Key advantages include continuous protection, compatibility with monolithic structures and improved crack management.
Applications range from tunnels and underpasses to marine works, tanks, dams and strategic infrastructure. The system features active self-healing properties, validated by studies conducted with the Politecnico di Milano, showing crack closure, recovery of performance and increased resistance to carbonation and aggressive agents.
Penetron is also involved in the European ReSHEALience project (Horizon 2020), focused on developing ultra-durable concretes (UHDC) for severe environments, with emphasis on durability, crack mitigation and sustainability.
The Penetron System is not just an additive but an integrated system including design support, mix design control, on-site assistance and execution verification. It also includes a replacement and installation insurance policy, a distinctive feature in the sector.
The benefits are measurable: improved watertightness, durability, reinforcement protection, reduced construction time and maintenance costs, as well as lower environmental impact.
Durability thus becomes an invisible infrastructure, essential to ensure safety, operational continuity and sustainability. Crystalline technology represents an evolution in concrete engineering: from a vulnerable material to a reactive, waterproof and self-healing system.
