Expert RCC Work
Services in Mumbai

RCC stands for Reinforced Cement Concrete — a composite material where steel bars (TMT rods) are embedded inside a concrete matrix. Concrete is strong in compression but weak in tension; steel is strong in tension. Together, they create a structural material that can handle bending, shear, and compression forces — making it the most widely used structural material in India for buildings, bridges, and infrastructure.

For a standard G+3 or G+4 residential building in Mumbai, M20 is typically used for slabs, M25 for beams and columns, and M25 or M30 for foundations depending on the soil bearing capacity. The correct grade must be determined by your structural engineer based on the design loads. We always follow your SE's drawings — never substitute a lower grade to save cost.

As per IS 456:2000, ordinary Portland Cement concrete must be cured for a minimum of 7 days. For blended cements (PPC, PSC) or high-strength grades (M30+), curing should continue for 10–14 days. Research shows that adequate curing can increase concrete strength by 20–30% compared to poorly cured concrete. At Devki Projects, we never deshutter or stop curing before the specified period.

As per IS 456, minimum deshuttering periods are: columns (16–24 hours), beam sides (24 hours), slab soffit (14 days), beam soffit for spans >4.5 m (21 days). These are minimum periods — we usually wait longer, especially for large-span slabs, to ensure adequate strength before removing props and shuttering.

Cube testing involves casting 150 mm concrete cube samples at the time of pouring, curing them alongside the structure, and testing their compressive strength at 7 and 28 days at an approved laboratory. IS 456 mandates cube testing for all structural concrete. The 28-day strength must meet or exceed the design grade. Devki Projects performs cube testing on every structural pour and provides you with the lab report.

Yes — in most cases, cracked or deteriorated RCC can be repaired without demolition. We assess the damage type (surface cracks, spalling, carbonation, exposed/corroded steel) and apply the appropriate repair method: epoxy crack injection for structural cracks, chipping and re-casting with micro-concrete for spalled sections, and anti-corrosion treatment for exposed reinforcement. Full demolition is only recommended when the structural integrity is beyond repair.