Concrete Waterproofing
& Protection
Protect RCC structures from carbonation, chloride attack, and rebar corrosion — before surface scaling becomes a structural crisis.
Get Free InspectionWhat is it?
Why Concrete Needs Active Protection
Reinforced concrete structures in Kanpur age faster than their design life suggests. The combination of UP’s alkaline soil, seasonal humidity swings, and high ambient CO₂ in industrial and traffic-dense zones accelerates two primary deterioration mechanisms: carbonation and chloride attack — both of which ultimately destroy the rebar and compromise structural integrity.
Carbonation-resistant surface coatings such as CarbonShield Pro form an elastomeric barrier with extremely high CO₂ diffusion resistance (SD > 50 m equivalent air layer), stopping the carbonation front from advancing toward the rebar while simultaneously bridging hairline surface cracks.
Chloride-ion barrier treatmentusing ChloroSeal 500’s two-coat system penetrates the near-surface pore matrix and creates a chemical barrier that prevents aggressive chloride ions from reaching the critical threshold concentration at the rebar surface.
Structural and non-structural cracks are sealed using polyurethane crack injection — an ultra-low-viscosity resin injected under controlled pressure to fill cracks as narrow as 0.05 mm through their full depth, restoring monolithic concrete behaviour.
Signs Your Concrete Needs Treatment
- Surface scaling or flaking of the concrete face
- Exposed or corroding steel reinforcement bars
- Rust-coloured stains spreading on the concrete surface
- Hairline or structural cracks in columns, beams, or slabs
- Concrete spalling — chunks breaking away from the surface
- Chalk-like white powder (lime bloom) forming on the surface
Early intervention saves the structure and avoids expensive structural repairs later.
Book Free InspectionOur Process
Our 5-Step Approach
Diagnosis before treatment — we never guess with structural concrete.
Core Sampling
Concrete cores are drilled from representative locations and tested for carbonation depth using phenolphthalein indicator. Results determine how far the carbonation front has advanced toward the rebar.
Crack Mapping
All visible cracks are measured, photographed, and classified as structural or non-structural. Cracks are assessed for width, depth, and whether they are live (moving) or dormant, determining the injection product and sequence.
Rebar Passivation
Exposed or near-surface rebar is treated with a migrating corrosion inhibitor and zinc-rich primer to halt active rust and restore the passive oxide layer — preventing future corrosion beneath the new coating.
Coating Application
CarbonShield Pro anti-carbonation coating or ChloroSeal 500 chloride barrier is applied in the specified number of coats at the correct DFT using airless spray or roller, in controlled ambient conditions.
Inspection & Sign-Off
DFT (dry film thickness) is verified with an elcometer gauge at multiple points. A photographic completion report and warranty certificate are issued before our team leaves site.
Specified Products
Products We Use
Every product is selected for Kanpur’s specific climate, substrate type, and exposure conditions — not generic off-the-shelf choices.
CarbonShield Pro
High-build anti-carbonation elastomeric coating that forms a flexible, CO₂-impermeable barrier over RCC structures. Bridges hairline cracks up to 0.3 mm and remains flexible across seasonal thermal cycling — critical for Kanpur's extreme summers and winters.
- DFT: 150 μm minimum
- Design life: 20 years
- CO₂ diffusion resistance: SD > 50 m
ChloroSeal 500
Two-coat chloride-ion barrier system for coastal-adjacent or saline-groundwater-exposed structures. The penetrating primer migrates into the concrete pore system while the topcoat provides a seamless surface barrier — together they stop chloride from reaching the rebar threshold.
- System: 2-coat (primer + topcoat)
- Chloride permeability: near-zero
- Coverage: 5–6 m² per litre per coat
PU Crack Injector
Ultra-low-viscosity single-component polyurethane injection resin for hairline and structural crack sealing in concrete elements. Reacts with ambient moisture to expand and fill the full depth of the crack, restoring monolithic integrity.
- Viscosity: 30–50 cP (ultra-low)
- Minimum crack width: 0.05 mm
- Tensile bond: > 2 MPa
Why Choose Katiyar Ventures?
Kanpur’s concrete protection specialists — engineered solutions, measurable results.
10-Yr
Coating Warranty
500+
Structures Protected
Free
Site Inspection
100%
Waterproof Systems
FAQ
Frequently Asked Questions
What is concrete carbonation and why is it dangerous?
Carbonation is a chemical reaction in which atmospheric CO₂ reacts with calcium hydroxide in concrete, gradually lowering its pH from around 12–13 down to below 9. At pH below 9, the passive oxide film that protects steel reinforcement breaks down. Once this protection is lost, chlorides and moisture can initiate rebar corrosion, leading to expansion, concrete cracking, and eventual structural failure. Kanpur's thermal cycling and pollution levels accelerate the process compared to rural areas.
How does chloride attack affect RCC structures?
Chloride ions sourced from saline groundwater, de-icing salts, or airborne marine aerosols penetrate through concrete's pore system and accumulate at the rebar surface. Once the chloride concentration exceeds a threshold — typically 0.4% by mass of cement — active corrosion begins regardless of the concrete's pH. Corroding rebar expands up to seven times its original volume, generating internal tensile stress that causes cover spalling. Parking structures in Kanpur, where vehicles carry road dust and occasional salt, are particularly vulnerable.
Can cracked concrete be fully repaired?
Yes — provided the root cause is addressed first. Structural cracks caused by overloading, settlement, or rebar corrosion must have those causes remediated before crack injection. Once the source is controlled, low-viscosity PU or epoxy resins are injected under pressure to fill the crack through its full depth. The injected resin bonds to the concrete faces, restoring structural continuity. Non-structural or dormant shrinkage cracks are sealed with flexible sealants to prevent water ingress.
Do you treat multi-storey parking structures and commercial buildings?
Yes. Parking decks, podium slabs, commercial towers, and industrial structures are a core part of our work. We are equipped with hydraulic lifts, rope access, and scaffold systems for high-rise facades. Our ChloroSeal 500 and CarbonShield Pro systems are specifically suited to parking decks and external facades — surfaces that face constant traffic loading, thermal movement, and exposure to pollutants.
Protect Your Structure Before It’s Too Late
Book a free concrete health assessment with our specialist engineers in Kanpur. Written report and cost estimate provided at no charge.
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