INTERBETON, maintaining its commitment to sustainability and technological excellence, introduces to the Greek market the INTERPROOF Crystal™ series of waterproof concrete. These state-of-the-art crystalline-technology concretes are engineered to ensure total watertightness by activating sealing mechanisms within pores and capillary microcracks— even years after installation. They are designed for projects where watertightness and long-term durability are essential performance requirements. INTERPROOF Crystal™ concretes fully comply with the Concrete Technology Regulation (KTS 2016), combining proven technical reliability with extended service life, reduced maintenance requirements, and optimized environmental performance.
INTERPROOF Crystal™ is a high-performance concrete designed for constructions where waterproofing, service life, and lifecycle cost are critical parameters. It is defined by:
• Very low porosity (pore structure, size, distribution, and connectivity)
• Low water–cement ratio
• Specially graded aggregates
• Optimized cement content and types
INTERPROOF Crystal™ is further improved by crystalline self-sealing and self-healing technology, which remains active over time, “closing” pores and microcracks and ensuring long-term watertightness. This directly enhances durability and the sustainability of the structure. It is supported by an Environmental Product Declaration (EPD) and carries a VESTA™ A rating, validating its excellent environmental performance.
INTERPROOF Crystal™ incorporates an integrated crystalline sealing system that activates when exposed to moisture to provide long-lasting waterproofing. Crystalline admixtures form insoluble crystals within pores and microcracks (<0.4 mm), sealing the concrete’s capillary network. The system is self-reactivating: it activates upon contact with water even years later.
• High resistance to moisture and corrosion
• Self-healing of microcracks through crystalline activation in the presence of moisture
• Long-term secondary sealing of microcracks years after curing
• Reduced capillary absorption and overall permeability
• Engineered mix design with specially reduced porosity and permeability
• Strong resistance to chlorides, CO₂, and sulfates in aggressive environments
• Exposure classes: XC1–XC4, XS1–XS3, XD1, XA1, XF1
• Extremely low water permeability (<20 mm or <15 mm for C30/37, EN 12390-8)
• Long-term durability and protection of reinforcement, reducing lifecycle costs
• Excellent workability (S4), easy placement, pumping, and compaction
The superior watertightness of INTERPROOF Crystal™ delivers significant environmental and operational benefits throughout the structure’s service life.
Reduced Maintenance & Repair Needs
High waterproofing performance reduces or eliminates the need for future repairs, such as re-sealing, injections, or patch repairs.
Preserved Structural Integrity
Long-term reinforcement protection prevents swelling, cracking, and spalling— preserving structural capacity without deterioration.
INTERBETON participated in the modernization of the Astir Marina Vouliagmeni facilities, contributing to the completion of an emblematic “green project” by providing high value-added, environmentally friendly concrete solutions.
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