Lighter than water. Stronger than the standard.
AIWON AAC blocks are three-quarters air, so they float. Independent NABL labs measured an average 4.85 N/mm² where IS 2185 asks for 4.0. Made by Brickcem on a fully automatic line in Kapadvanj, Gujarat.
Three-quarters of every block is air.
In the mixer, a pinch of aluminium powder reacts with lime and cement and lets off hydrogen. The wet mass rises like bread, millions of closed cells form, and high-pressure steam turns the cake to stone. The air stays locked inside — that is what keeps heat out, keeps the weight down, and keeps a block afloat.
Average dry density in independent lab reports — a third of a red clay brick.
Average thermal conductivity. Red clay brick is around 0.81.
Average compressive strength. IS 2185 Grade 1 asks for 4.0 at this density.
This is a sawn AIWON face under a low light. Move across it and the light follows.
One wall, two AIWON products
The block and the mortar are designed together: a true-to-size block, laid on a 3 mm joint that is stronger than the block it holds.
- 600 × 200 mm face, 75 to 300 mm thick
- IS 2185 (Part 3) Grade 1, BIS licence
- Sand base and fly-ash base
- ±2 mm from an automatic gantry
AIWONBond- 3 mm joints instead of 10–15 mm
- No water curing; plaster after 24 hours
- 110–120 sq ft of 150 mm wall per 40 kg bag
- Ready-mixed: add water only
The afternoon test
A west wall in Ahmedabad in May. The sun reaches it at noon and the face heats past 55 °C. Slide through the day and watch the heat travel through a 230 mm brick wall and a 200 mm AIWON wall into a room cooled to 26 °C.
Red brick, 230 mm
— W of heat into the room per m²
AIWON, 200 mm
— W of heat into the room per m²
Heat the AC must remove in a day: — kWh through brick, — kWh through AIWON.
less heat through the wall — about — units of electricity over a 100-day summer with an ordinary AC.
How this is worked out: heat flow through a single-material wall, calculated every few seconds over four days until the days repeat. Air 28–42 °C, afternoon sun on a mid-grey face, room held at 26 °C, AC efficiency 3. Brick 1,900 kg/m³ and 0.81 W/m·K; AIWON 630 kg/m³ and 0.19 W/m·K, as measured. Plaster, shade and colour change the numbers for a real house, not which wall wins.
Measured, not promised
The average of independent NABL-accredited lab reports, against the limits IS 2185 sets. The green band is where the standard wants the result; the dot is AIWON.
Six stamps in the passport
Every AIWON block travels on the same papers: a BIS licence to IS 2185, the CII GreenPro ecolabel, three ISO management systems and IGBC membership. We show them as stamps — tap one and the original is a click away.
Not all AAC is the same AAC
Most AAC in the market is made on mixed or semi-manual lines, where the result depends on who is on shift. Brickcem was built to remove that guesswork.
| AIWON by Brickcem | Typical AAC supplier | |
|---|---|---|
| The line | Fully automatic KEDA Suremaker line with Forbes Marshall steam and autoclave control | Mixed or semi-manual machinery |
| Raw material | Bulk silos, measured feed ratios, no hand-batching | Manual feeding, batch-to-batch variation |
| Cutting | Automatic gantry, ±2 mm — inside the ±3 mm IS 2185 allows on height and thickness | Wider spread, thicker plaster to hide it |
| Proof | Independent NABL lab reports, plant lab testing every control unit, test certificates anyone can check online | Limited validation |
| Systems | BIS licence, GreenPro, ISO 9001, 14001 and 45001 | Informal controls |
| What you buy | A wall system: AIWON blocks with AIWON Bond, made for each other | Blocks only; joint mortar mixed on site |
Predictability is engineered
Five stations, one programme, no shortcuts. The plant at Salod, Kapadvanj was built as a manufacturing system, not an assembly operation.
Raw materialFly ash and sand in dedicated storage, fed in measured ratios.
MixingKEDA dosing and mixing to a fixed recipe, every batch.
CastingThe slurry rises in the mould as the air cells form.
Precision cuttingWires cut the green cake to size on an automatic gantry.
AutoclavingHigh-pressure steam curing, controlled by Forbes Marshall systems.
Watch the factory film
Come and see it run
Builders, architects and dealers are welcome at the plant. Walk the line, pull a block from the stack and take it to any lab you like.
Work out your walls in two minutes
Type in the walls, get blocks, cubic metres, AIWON Bond bags and trucks — then send the list to us for a price.