Water is one of the main factors in concrete degradation. Infiltration can lead to corrosion of the reinforcement, crack formation, and structural deterioration.

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The main problems related to the waterproofing of underground structures include:

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• Hydrostatic pressure: water pressure can cause infiltration through pores, joints, and cracks.
• Freeze-thaw cycles: water that penetrates the pores of concrete can expand when frozen, causing structural damage.
• Chemical attacks: sulfates, chlorides, and other aggressive agents present in the soil can compromise the integrity of the concrete.
• Structural movements: soil settlement and temperature variations can generate micro-cracks that facilitate water passage.

To create waterproof underground structures, several solutions can be adopted. Among the most advanced and effective is integral waterproofing through the use of crystalline admixtures, which transform the concrete into an autonomous waterproof barrier.

The use of crystalline admixtures, such as Drymix and Drymix Ultra, allows for the integration of waterproofing directly into the concrete matrix.

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This technology is based on a chemical reaction that occurs upon contact with water, generating insoluble crystals that block pores and micro-cracks up to 0.4 mm wide.

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Advantages of crystalline technology:

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✅ Permanent and self-healing waterproofing.
✅ Reduction of the concrete's permeability coefficient.
✅ Increased resistance to aggressive chemical agents.
✅ Elimination of external membranes subject to damage.
✅ Simple application and reduced maintenance costs.

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The DRYBOXSYSTEM® from Drykos is an advanced solution that combines the use of crystalline admixtures with the strategic management of critical points in the structure, such as joints and utility penetrations.

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System components:

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• Crystallizing additives (Drymix and Drymix Ultra) to waterproof the concrete in mass.
• Systems for construction and expansion joints, with hydro-expansive profiles and high-performance sealants.
• Protective coatings and waterproofing mortars for interventions on existing structures.

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Applications of Waterproof Underground Structures

Waterproofing with the DRYBOXSYSTEM® is ideal for numerous applications, including:

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• Foundations and retaining walls of residential and commercial buildings.
• Underground parking lots subject to infiltration and humidity.
• Potable water tanks and wastewater treatment plants.
• Tunnels, galleries, and transport infrastructures.

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Underground waterproof structures require an advanced technical approach to ensure protection and durability over time. The use of crystalline admixtures and integrated solutions such as the DRYBOXSYSTEM® is now the most reliable choice for achieving permanent waterproofing with low maintenance impact.

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If you want to discover more about our concrete waterproofing technologies, contact us for a personalized technical consultation!

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