Starting A Production Business of AAC Blocks From Silica Sand & Lime Stone Powder | Start Production Business in Construction Sector

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Introduction

Autoclaved aerated concrete (AAC) blocks have gained wide popularity because of their remarkable features. They are affordable, easily available and are environment friendly. These AAC blocks do not require any form of protection or to be painted or covered as they are absolutely weather proof. The raw materials used for producing autoclaved aerated concrete include lime stone, cement and sand. When these dry ingredients are mixed together in correct proportions and baked under high temperature, it develops into a very hard material that can bear heavy loads. This material is called as autoclaved aerated concrete that is built using some modern techniques and equipment.

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Advantages of AAC block over other types

Lightweight and easy to install AAC blocks are extremely lightweight, which means that they can be transported using standard machinery. This makes them particularly suitable for remote locations where road infrastructure is poor. They are also very simple to transport because they can be stacked like conventional bricks without any kind of support. Finally, they require much less cement than other types of concrete, which further helps lower carbon emissions during production.

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In addition, they have a high compressive strength so it is possible to increase building heights compared with traditional building methods. In fact many tall buildings in India use AAC due to their higher load-bearing capacities when compared with reinforced concrete structures of a similar height. The low density material used in construction gives an AAC block wall excellent sound absorption qualities meaning that it does not transmit vibrations or noise into adjoining rooms or units within multi-storey buildings. It is also more resistant to earthquake damage compared with masonry. Furthermore, there is no danger of collapsing in case of fire since aerated concrete does not burn unlike mortar made from lime stone powder.

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Manufacturing Process of AAC Blocks from Silica Sand & Lime Stone Powder

Commonly known as autoclaved aerated concrete, or AAC, are air-filled foam blocks made by foaming portland cement. The manufacturing process starts with a mixture of sand, lime stone powder, and water to make slurry. This slurry is then fed into a machine called hopper, which uses a screw mechanism to stir all ingredients uniformly together. After that, a mixture of Portland cement and pulverized fuel ash (known as pozzolanic materials) is added to the slurry.

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Then comes mixing again. Concrete pump receives these slurry from hopper and it injects it in an expansion chamber before injecting it in molds that are placed in pressure vessel for curing purpose. Following curing, portions of slurry are removed from expansion chamber using main nozzle, while fresh aggregate is being supplied continuously. Concrete pump slowly feeds fresh aggregates overhead conveyor system so that they can be introduced at back side and fill up gaps created while removing cured concrete portion through main nozzle.

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When adequate amount of aggregate has been filled up in mold, then heaters inside heat vessel are turned on so that fresh aggregate gets dried out well before receiving any form of mechanical compaction forces. Once complete curing of new AAC block, moulded block is taken out of mould and cut into desired size pieces. These are then collected in pallets based on size specification and packed tightly so that those who need to ship them across country donâ€™t have difficulty carrying them due to their loose nature. Thatâ€™s how you manufacture your own set of spongy looking bricks!

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Market Demand

AAC blocks are a type of construction material that can be utilised for a wide range of applications. It is used to construct apartments, terrace houses, hospitals, schools, and commercial constructions. Highways, bridges, and runways, to name a few, can all be built with them. These blocks are in high demand, particularly in developing countries such as India, where the population is quickly increasing and resources to meet the country’s construction needs are scarce. As a result, in order to fulfil these goals without damaging the environment, firms must use cost-effective and environmentally friendly building materials. Because local resources are plentiful and require less transit, they have a lesser environmental impact.

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This lowers the overall cost of building with these materials. As a result, natural lightweight aggregates like silica sand and limestone powder are significant in a range of industries, including civil engineering, because they address challenges like global warming and lack of raw materials. To accommodate demand, autoclaved aerated concrete (AAC) blocks are created with the main materials listed above, as well as certain additional inert elements. The market for autoclaved aerated concrete (AAC) is expected to grow at a CAGR of 7.2 percent from 2020 to 2027, reaching $26,964.5 million. The AAC sector is being propelled forward by increased urbanisation and industrialization, infrastructure expansion, rising need for lightweight construction materials, expanding preferences for low-cost housing, and a growing emphasis on green and soundproof structures.

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