AAC Block Factory in Akola: How Quality Fly Ash Blocks Are Made

Two blocks can look the same on a pallet but perform very differently after masonry begins. That difference starts inside the AAC block factory, long before the truck reaches your site.

Quality AAC blocks are made from fly ash, cement, lime, gypsum, water, and aluminium powder. We turn them into a slurry, allow it to rise into a green cake, cut it accurately, and cure it in an autoclave. This manufacturing process creates true autoclaved aerated concrete blocks, not lightweight concrete blocks that were simply left to dry.

India generated 340.11 million tonnes of fly ash in 2024-25 and used 332.63 million tonnes of it. Bricks and tiles used 14% of that volume, according to the government’s fly ash utilisation figures. At Dlite Blocks, we use this resource to produce reliable walling material for AAC block construction.

What Goes Into Quality AAC Blocks?

A good AAC block needs a controlled recipe. Each material affects strength, weight, thermal insulation, and dimensional accuracy.

• Fly ash forms about 60-65% of the mix. It provides silica and supports the reaction that makes the block stable.
• Cement provides early binding strength before autoclaving.
• Lime reacts with silica and forms calcium silicate hydrates, which support long-term strength.
• Gypsum controls setting time, so the mix firms evenly.
• Aluminium powder releases hydrogen gas. This creates the porous structure that makes AAC blocks lightweight.
• Water carries the materials into a smooth slurry for mixing and casting.

Fly ash quality matters as much as the formula. Coarse ash or ash with high unburnt carbon can affect strength and finish. Our fly ash blocks in Maharashtra come from our manufacturing unit at Bhusawal, near the Deepnagar power plant. The source remains close and controlled, while ash utilization reports remain publicly available.

This helps us supply steady-grade fly ash blocks to Akola and nearby markets. The Paras thermal power plants also sit within this ash belt, which supports dependable sourcing for an AAC block factory in Akola.

Inside Our AAC Block Manufacturing Plant

Dosing and Mixing

Fly ash is ground with water into a slurry. Cement, lime, and gypsum sit in silos, then screw conveyors feed them into the mixer at measured levels. Proper dosing and mixing keep every batch consistent.

That is where an organised AAC block manufacturing plant in Akola differs from a small unit working without batch control. A proper AAC block plant does not guess its proportions.

Casting, Rising and Pre-Curing

We pour the slurry into oiled moulds. Aluminium powder reacts with lime and water, releasing hydrogen gas. The mix rises and fills the mould, much like dough rising before baking.

The green cake then enters pre-curing. It rests for a few hours until it becomes firm enough for wire cutting, while still soft enough to cut without breaking.

Wire Cutting and Size Tolerance

Wire cutting controls the dimensional accuracy of an AAC wall block. Good cutting keeps the size tolerance close to ±3 mm.

That accuracy gives you real site benefits:

• Masons can use 2-3 mm joints with a thin-bed adhesive.
• Courses stay level and neat.
• Plaster thickness stays lower.
• You avoid rejection, breakage, and uneven wall lines.

AAC blocks for construction work best when their size stays consistent from one pallet to the next.

Autoclaving for Final Strength

After cutting, blocks move into the autoclave. This sealed chamber uses steam at around 12 bar and 180-190°C for 10-12 hours.

During autoclaving, lime and silica form tobermorite crystals. This is the stage that gives an autoclaved aerated concrete block its final compressive strength, dry density, and stability. Without this step, you do not get genuine autoclaved aerated blocks.

Grade, Strength, and Quality Testing

IS 2185 helps buyers understand grade through density and strength. We carry out quality testing before packing and dispatch.

Specification	Dlite Standard
Compressive strength	HD 4+ / SHD 5+ N/mm²
Dry density	HD 551-650 / SHD 651-750 kg/m³
Thermal conductivity	Under 0.24 W/m-K
Sound reduction index	45 dB for a 200 mm wall
Fire resistance	4-6 hours, based on thickness
Sizes	600x200x75 to 300 mm

Density and strength usually move together. If a block feels unusually light for its claimed grade, ask for its test report. Our compressive strength guide explains what to check.

Dlite Blocks openly lists product data for AAC fly ash blocks. Whether you need load-bearing walls, partition walls, infill panels, or framed structures, choose the grade for the actual job.

AAC Blocks vs Red Bricks

Factor	AAC Blocks	Red Bricks
Weight	Lightweight, about one-third of brick weight	Heavy
Wall speed	Larger units and fewer joints	Slower masonry
Thermal insulation	Better	Lower
Acoustic performance	Better sound control	Lower
Dead load	Lower	Higher
Structure	Can reduce steel and concrete demand	Adds more structural load

The lower dead load matters because it affects the full structure, not only the wall. Do not compare only AAC blocks price with fly ash brick price or red brick rates per piece. Compare the finished wall. Our AAC blocks vs red bricks guide makes that comparison easier.

How to Check an AAC Block Factory Before Ordering

Before choosing an AAC block supplier, ask direct questions:

1. Where does the fly ash come from, and how far does it travel?
2. What autoclave cycle do they follow? A serious process uses about 10-12 hours at 12 bar.
3. Can they show batch records for dry density and compressive strength?
4. Do they provide a compatible AAC block mortar and Jointing Mortar?

Blocks with a ±3 mm finish deserve AAC block jointing mortar in Akola, not thick cement-sand beds. Our AAC block jointing mortar works as jointing mortar for AAC blocks, offers block jointing mortar coverage of 65-70 sq.ft per bag at 2-3 mm joints, needs no curing, and can reduce mortar consumption by up to 70%.

For builders, choosing both AAC blocks and Jointing Mortar from one maker means one team stays answerable for the wall system.

AAC Blocks in Akola and Maharashtra

Dlite Blocks is an AAC block manufacturing company with ten years in business, 2.5k projects completed, and 150+ trained staff. Apple Superspeciality Hospital and Ganesh Hospital Amalner used our blocks, where fire resistance and acoustic performance matter every day.

Builders across Akola, Amravati, and Aurangabad can order from us as AAC bricks manufacturers, AAC blocks manufacturers, fly ash block manufacturers, and AAC blocks suppliers.

Ready to Order AAC Blocks?

If you need AAC blocks suppliers in Akola, send us your drawing, block size, and required CBM. Our AAC blocks manufacturer in Akola team works from Damle Chowk, Ramdaspeth, from 9 am to 10 pm, seven days a week.

Call 7030951664 or contact us. We will help you choose the right AAC block grade, quantity, and delivery plan.

Frequently Asked Questions