Xypex Crystalline Technology
Xypex Crystalline Technology works inside the concrete. It waterproofs under extreme hydrostatic pressurem extends service life, and shelf-heals when water is present.
For engineers specifying underground infrastructure, integral waterproofing provides measurable, verifiable advantages over traditional tunnel waterproofing. Trusted in over countries for more than years, Xypex protects cobcrete from the inside out and extends the service life of tunnels.
Integral Waterproofing and Increased Service Life
Xypex reacts with the by-products of cement hydration and water to form a non-soluble crystalline structure deep within the concrete. In this condition, the concrete becomes impermeable for water, preventing the pentration of liquids from any direction, even under extreme hydrostatic pressure.
The chemical-resistant crystalline matrix prevents chloride ingress and mitigates sulphate attack. It has also proven effective against carbonation and can self-heal ststic crack up to 0.5 mm, ensuring long-term concrete performance even under harsh environmental conditions.
The Xypex Advantage
- Permanent increase in durability and extended service life
- Protects against chlorides, sulphate attack and carbonation
- Permanently seals concrete from water ingress
- Self-heals static cracks up to 0.5 mm
- Lower carbon footprint than other waterproofing technologies.
Waterproofing in Tunnels: Xypex vs Traditional
Fewer Layers, Fewer Processes. Less Time, Less Risk, Less Cost.
Traditional surface-applied water proofing membranes provide a thin, impermeable barrier that can be punctured during construction, may delaminate, and can fail within the structure’s service life. Xypex Crystalline Technology works differently. Integrated directly into the concrete mix or applied to the surface, it reacts with water and by-products of cement hydration to form a permanent, non-soluble crystalline structure deep within the pores abd capillary tracts of the concrete matrix.
The resulting Xypex-treated concrete is waterproof, without the risk of damage during construction, and enhances durability, especially when exposed to aggresive soils and groundwater. Trusted in tunnel applications globally, Xypex delivers permanent, integral protection for all tunnelling construction methods.
The Xypex Tunnelling Advantages
- Shortens construction time and saves money
- Permanent increase in durability and extends service life
- Designed for greater efficiency with nozzle-added accelerators
- Self-heals static cracks up to 0.5 mm
- Suitable for use in aggressive soils and groundwater
- Compatible with ground feezing methods
- Suitable for all types of tunnel construction
- Globally available
Xypex Extended Service Life: Engineered for Superior Performance
Concrete permeability is the proimary predictor of service life in concrete infrastructure. It is directly related to the rate of deterioration from chloride-induced corrosion, sulphate attack, and carbonation.
Xypex Crystalline Technology reduces concrete permeability within its microstructure. Gloabl independant testing confirms consistent, measurable performance improvement.
Lifecycle Advantage
Xypex’s integral waterproofing extends the active service life of tunnel structures, increases the time to first repair, and lowers total lifecycle costs. These are critica factors for infrastructure requiring a service life of 100+ years.
86.7% Permeability Reduction
Continued Reactivity
This 11-year study shows that the water permeability of Xypex-treated concrete continues to improve over time. While the average water penetration at 28 days was alreadt low, the depth of penetration was further reduced by 86.7% at 360 days.
100+ Years Service Life Without Repair
Verified Real-World Performance
Service life modelling is critical for infrastructure; however, real-world performance does not always align with predictive models. Independant service life assessments of two marine structures confirm that Xypex-trated concrete outperforms expectations. After 19 and 26 years in service, testing shows exceptionally low chloride concentartionws, with a predicted service life exceeding 100 years without repair.
Reduces Corrosion Rate
Crack Healing and Reduced Rate of Corrosion
This long-term independant study provides substantial evidence supporting Xypex’s efficacy. The results show that Xypex-trated concrete reduces rebar corrosion rates by 40% in uncracked concrete and by up to 50% in cracked concrete. The author theorised that Xypex’s crack-healing capability reduced corrosion loss by up to 67% in the cracked specimens
Cut and Cover
Key Benefits of Xypex in Cut and Cover
- Reduced excavation width by eliminating externally applied waterproofing
- Reduced labour oniste
- No risk of membrane puncture during construction
- Extended service life
Immersed Tube
Key Benefits of Xypex in Immersed Tube
- Self-healing of cracks up to 0.5 mm
- Increased durability and protection from harsh marine chlorides, sulphates and other aggressive groundwater
- Waterproofs against extreme hydrostatic pressure aftersubmersion
- Consistent integral protection across precast elements and closure pours
Xypex: A More Sustainable Solution
Sustainability
Our Crystalline technology provides permanent concrete waterproofing that supports resilient infrastructure, extends service life, and enables circular construction practices. Central to our commitment is helping projects recude their carbon footprint while achieving their durability and sustainability objectives.
Confirm Presence of Xypex in Hardened Concrete
Xypex Admix products include the proprietary Visual Detection System (VDS) tracer, allowing engineers and inspectors to verify the presence of Xypex in hardened concrete. This unique feature allows for independent confirmation of crystalline in the concrete.