Concrete,reimagined forthe new India.
Premium AAC blocks — 3× lighter than red brick, fire-rated, thermally insulated. Engineered at our Nagpur plant. Delivered across central India.
Specified by
200+ architects & developers
Recognised by
Why AAC
The building block that's replacing the red brick.
Autoclaved Aerated Concrete is engineered, not fired. Lighter walls, tighter timelines, lower bills — without compromise on strength.
On site · Nagpur
A single mason can lay 23 m² of wall per day with VAJRA blocks.
3× lighter
Just 550–650 kg/m³ vs 1,800 for red brick. Reduces dead load, cuts foundation steel & concrete by up to 15%.
Fire-rated
Non-combustible, withstands 1,200°C. Tested to a 4-hour fire rating — among the safest walling materials.
Thermal insulation
U-value ~0.45 W/m²K — keeps interiors 4–6°C cooler in Nagpur summers. AC bills drop ~25%.
Termite & moisture-proof
Inorganic, dimensionally stable, impervious to pests, mould and salt seepage. Built for Indian humidity.
Faster to build
One AAC block replaces 7–10 bricks. Masons lay 20–25 m²/day vs 12–15 for brick — finish projects weeks sooner.
Eco-friendly
Uses fly ash from thermal plants. Saves ~180 kg CO₂ per m³ vs red brick. No topsoil destruction.
The catalog
Four sizes. Every wall in your project.
From partitions to load-bearing high-rises — engineered to IS 2185 (Part 3).
VAJRA 4″
- Weight
- 8.4 kg
- Best for
- Internal partition walls
VAJRA 6″
- Weight
- 12.6 kg
- Best for
- Internal & external walls
VAJRA 8″
- Weight
- 16.8 kg
- Best for
- External walls
VAJRA 9″
- Weight
- 18.9 kg
- Best for
- Heavy load-bearing & high-rise external
Featured project
Nirvana Heights, Nagpur.
A 14-floor residential tower wrapped end-to-end in VAJRA AAC. Delivered 18 days ahead of brick-equivalent schedule, with measurable savings on steel and foundation concrete.
“Switching to VAJRA dropped our brickwork timeline by 18 days on a 14-floor tower.”
— Ar. Mehul Deshpande, Studio Sutra Architects
Tower height
Blocks supplied
Saved vs brick
Lower dead load
By the numbers
AAC vs the alternatives.
Independently tested specifications. Numbers your structural engineer will recognise.
Density (weight)
kg/m³ · lower is betterThermal conductivity
W/mK · lower is betterCompressive strength
N/mm² · higher is betterConstruction speed
m²/mason/day · higher is better* Values are representative of typical Indian samples. AAC figures from VAJRA QC datasheets; comparison data from IS 2185, IS 3495 references and published industry sources.
Where it's used
Built into every kind of building.
From a single-storey villa to a 40-floor tower, VAJRA AAC works wherever a wall needs to go up.
T3 to T40 towers
Residential high-rises
IT parks · banks · retail
Commercial offices
Warehouses · factories
Industrial sheds
Cooler interiors
Villas & farmhouses
Internal divisions
Partition walls
Plot enclosures
Boundary walls
Sandeep Khurana
Founder & Managing Director
Third generation
Manufacturer
Khurana Group (est. 1986)
Built by people who've actually run a factory
Forty years of factory floor experience, applied to a single category we believe deeply in.
We didn't start in concrete — we started in toys, in 1986. Four decades later, what we've learned about manufacturing discipline is what makes VAJRA different. A tight tolerance isn't a marketing line. It's the only way we know how to run a factory.
Inside the plant
A walk through our Nagpur facility.
Built ground-up in 2024 to international AAC standards. Every block you receive is wire-cut to ±2 mm, autoclaved at 190°C, and inspected before it leaves the line.
70,000 sq ft facility
Hingna MIDC, Nagpur — strategically placed for pan-central-India dispatch.
Fully automated batching
Computer-controlled mixing keeps every block within ±2% density tolerance.
On-site QC lab
Compressive strength, density and dimensional checks on every production batch.
200 m³ daily capacity
Plant runs two shifts a day — ramping to 300 m³ by Q3 2026.
How it's made
Six steps. One uncompromised block.
A walk through our Nagpur plant — from raw material to palletised, ready-to-ship AAC.
- 01
Precision raw mix
Fly ash from local thermal plants is blended with cement, lime, gypsum and water in a computer-controlled batching plant.
- 02
Aluminium aeration
A precise dose of aluminium powder triggers a controlled reaction. The slurry expands ~2× and forms millions of micro air cells — the source of AAC's thermal insulation.
- 03
Moulding & pre-cure
The mix is poured into large moulds and left to set into a green cake. Once firm enough to handle, it's de-moulded for cutting.
- 04
Wire cutting
The green cake is wire-cut into precise block sizes — 4″, 6″, 8″, 9″ — with tolerances tighter than ±2 mm.
- 05
Autoclave curing
Blocks are cured under saturated steam at 190°C and 12 bar pressure for 12 hours. This is what gives AAC its final strength and crystalline structure.
- 06
QC & palletisation
Every batch is tested for density, strength and dimensional stability. Approved blocks are shrink-wrapped on pallets and dispatched.
Pan-India delivery
Nagpur to your site.
Five states. Five days.
Our Hingna plant sits 6 km from NH-44 with direct connectivity to every major central, western and south-central Indian market. 14 dedicated carriers, GPS-tracked, with on-time-delivery above 96%.
14
Carriers
96%
On-time
510+
Pallets/wk
Typical lead times from Nagpur
Nagpur (home)
MH
50 km
Wardha
MH
80 km
Amravati
MH
160 km
Chandrapur
MH
150 km
Akola
MH
250 km
Pune
MH
700 km
Nashik
MH
600 km
Indore
MP
440 km
Bhopal
MP
350 km
Jabalpur
MP
230 km
Raipur
CG
290 km
Bilaspur
CG
400 km
Hyderabad
TG
500 km
Surat
GJ
750 km
Quick estimate
How many blocks does your project need?
A rough cut for planning conversations. Tell us the wall area and block size — we'll show the count, weight, and indicative cost. Final quote always after a site visit.
Block size
VAJRA 6″ · best for internal & external walls.
Your estimate
Blocks needed
8,330
Total weight
105.0 t
Indicative cost
₹6,49,740
ex-plant · GST extra
≈ red bricks replaced
66,640
Weight saved vs red brick
128.3 tonnes
CO₂ saved
27,000 kg
Indicative pricing — actual quote depends on volume, project timeline and delivery location.
By the numbers
A plant built for India's pace.
Daily plant capacity
Blocks dispatched / day
Delivery radius from Nagpur
First-pass QC rate
Delivered across central India
Lighter walls.
Lighter footprint.
Every block we ship replaces fired clay with industrial by-product.
CO₂ saved per m³
Vs traditional red brick. A 1,500 sq ft villa saves ~16 tonnes — roughly a year of an Indian household's emissions.
Industrial waste reused
Fly ash diverted from coal thermal plants becomes the primary aggregate in every VAJRA block.
Topsoil destroyed
No clay mining. Unlike red bricks, AAC needs no agricultural land — preserving India's most fertile resource.
Standards & certifications
Specified to the standards your structural team knows.
Part 3 — AAC blocks
Compressive strength, density and dimensional standards laid down by the Bureau of Indian Standards.
Quality management
Internationally recognised QMS — covers every step from raw material intake to dispatch.
Eco-product rating
Independently assessed for low carbon footprint, fly ash content and water efficiency.
Member organisation
VAJRA contributes 1–4 LEED / IGBC credits to projects pursuing green building certification.
Registered MSME
Government-registered manufacturer with GST and pan-India dispatch invoicing.
International benchmark
We meet the American standard for autoclaved aerated concrete, on top of IS 2185.
Recent projects
A wall of walls.
A glimpse of buildings already standing on VAJRA blocks across central India.
Trusted by builders
What the people building India say.
Switching to VAJRA AAC dropped our brickwork timeline by 18 days on a 14-floor tower. The block consistency is exactly what a structural engineer wants to see.
We've tried four AAC suppliers in central India. VAJRA is the only one that hits the spec sheet every single pallet. Zero rejections last quarter.
The thermal performance is real. Our showrooms in Indore stay 5°C cooler — clients keep asking what insulation we used. It's just the walls.
Press & recognition
What people are saying about us.
Recent coverage
- Apr 2026
Construction World
Central India's AAC market gets a Nagpur-based contender
- Mar 2026
Indian Architect & Builder
Profile: VAJRA Concrete — engineering meets discipline in Hingna
- Feb 2026
The Times of India · Nagpur
Hingna AAC unit ramps to 200 m³/day, eyes 28 new dealers in 2026
- Jan 2026
Smart Cities Council India
Net-zero plant roadmaps: case studies from emerging manufacturers
Recognition
- 2026IGBC GreenPro Eco-Label · Renewed
- 2025Best Emerging AAC Manufacturer — CW Excellence
- 2025MSME-CDP Quality Certification
- 2024BIS Licence ISI Mark Authorisation
From the knowledge hub
Field notes from the people building the walls.
Frequently asked
The questions buyers ask first.
Don't see your question? Ask us directly on WhatsApp — we typically reply within an hour during business days.
Ask on WhatsAppFour standard sizes — 24×8×4″, 24×8×6″, 24×8×8″ and 24×8×9″ (100, 150, 200 and 225 mm thicknesses). Custom thicknesses available on orders above 200 m³.
Get in touch
Order a sample.
Book a site visit.
Tell us about your project. We'll send a custom quote within 24 hours and arrange free samples to your site.
Plant
Plot G-118, MIDC Industrial Area
Hingna Road, Nagpur
Maharashtra 440016
Hours
Mon–Sat
9:00 – 18:30 IST