Delhi Metro RCC Repair & Maintenance
Specialized structural repair and maintenance of reinforced concrete structures on DMRC Line 3 & Line 4 — executed with precision, safety compliance, and zero service disruption.
Repair & Maintenance of RCC Structures — DMRC Lines 3 & 4
N Square Engineers successfully undertook the comprehensive repair and maintenance of Reinforced Concrete (RCC) structures along Delhi Metro Rail Corporation (DMRC) Line 3 (Janakpuri West – Botanical Garden) and Line 4 (Mukundpur – Shiv Vihar).
Working within the stringent operational constraints of an active metro system, our team delivered structural interventions that restored concrete integrity, extended asset life, and met DMRC's exacting quality and safety benchmarks — all without disrupting daily commuter services.
This project stands as a testament to our proven expertise in high-stakes infrastructure repair, precision engineering, and reliable execution under live-load conditions.
- Concrete spalling rectification
- Rebar corrosion treatment
- Crack injection & sealing
- Surface carbonation repair
- Protective coating application
- Structural grouting works
- Non-destructive testing (NDT)
- Quality audits & documentation
What We Delivered
Our structural repair programme covered a comprehensive range of concrete rehabilitation techniques to restore full structural integrity of DMRC's elevated infrastructure.
Concrete Spalling Repair
Removal of deteriorated concrete, surface preparation, and restoration using polymer-modified mortar to manufacturer specifications.
Anti-Corrosion Treatment
Rebar exposure, cleaning by mechanical methods, application of corrosion inhibitors, and protective barrier coatings.
Crack Injection & Sealing
Low-pressure epoxy and polyurethane crack injection for structural and non-structural cracks, restoring monolithic performance.
Protective Coating Systems
Application of elastomeric anti-carbonation coatings and waterproof sealants across pier, beam, and deck surfaces.
NDT & Structural Assessment
Rebound hammer, ultrasonic pulse velocity, and half-cell potential testing to map deterioration and validate repair effectiveness.
Quality Documentation
Comprehensive as-built records, material test certificates, and inspection reports submitted per DMRC's quality assurance framework.
Trusted for High-Stakes
Infrastructure Projects
From government metro systems to commercial complexes — we bring certified expertise, proven processes, and zero-compromise quality to every project.
Years Experience
Delivering complex structural and civil engineering projects since 2008
Projects Completed
Residential, commercial, industrial, and government infrastructure
Certified Quality
Adherence to international construction standards and safety protocols
Approved Contractor
Proven track record executing works for India's premier metro authority
Explore Our Portfolio
Browse other landmark projects delivered by N Square Engineers across Delhi NCR.
