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AAC blocks are eco-friendly and sustainable

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Narayan Saboo, Chairman, Bigbloc Construction, discusses the qualities of AAC blocks and its environmentally friendly properties.

What is the composition of Autoclaved Aerated Concrete (AAC) blocks?
AAC is a lightweight, precast, cellular concrete. It is a green building material composed of fly ash, gypsum, lime, portland cement, water and aluminum powder. AAC blocks are made in rectangular prism shape only.

What is the core functionality of the blocks?
AAC blocks are widely used in the construction of apartments and other types of residential properties, industrial and commercial buildings. Owing to their excellent heat insulation capacity and thermal resistance, AAC blocks find application in interior and exterior construction.

What brings strength and durability to these blocks?
These materials include cement, lime, fly ash, gypsum, aluminum powder and some other additives. The precise combination and proportion of these materials contribute to their overall strength.

How do you ensure quality standards?
We make AAC blocks as per BIS code IS 2185 Part 3, guidelines in IS code to ensure quality standards.

What are the key advantages of using these blocks as building materials?
AAC blocks are eco-friendly and sustainable. They are lightweight, thermally insulated, energy efficient and fire resistant. Their other qualities include acoustics performance, easy workability, design flexibility and faster construction. AAC Blocks are one-third in weight as compared to red bricks thereby reducing the dead load on the building and resulting in huge saving of structural costs. Also, as the size is equivalent to almost nine red bricks, construction is much faster; the labour required is less; joints in the wall are also less thereby resulting in mortar savings, too.

How does it impact the environment?
AAC blocks are eco-friendly and sustainable. They are green lightweight building materials, with less transport cost. This material warms the room during the winter and cools it during the summer, reducing air-conditioning system usage by at least 25 per cent. Non-toxic and pest repellent, they prevent soil erosion and consume less water. Use of red bricks results in an upper layer of soil erosion, which makes the land barren or infertile in the long run.

What innovations can we expect from you?
We are starting with the manufacturing of ALC panels, which is further advancement of technology as ALC panels are a new age building material that is a further advancement of AAC Blocks.
Panels are reinforced with steel and they will make construction much faster, too. Also, we are looking to get many other new age building materials in our partnership with SCG.

Concrete

CCU testbeds in Tamil Nadu

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Tamil Nadu is set to host one of India’s five national carbon capture and utilisation (CCU) testbeds, aimed at reducing CO2 emissions in the cement industry as part of the country’s 2070 net-zero goal, as per a news report. The facility will be based at UltraTech Cement’s Reddipalayam plant in Ariyalur, supported by IIT Madras and BITS Pilani. Backed by the Department of Science and Technology (DST), the project will pilot an oxygen-enriched kiln capable of capturing up to two tonnes of CO2 per day for conversion into concrete products. Additional testbeds are planned in Rajasthan, Odisha, and Andhra Pradesh, involving companies like JK Cement and Dalmia Cement. Union Minister Jitendra Singh confirmed that funding approvals are underway, with full implementation expected in 2025.

Image source:https://www.heavyequipmentguide.ca/

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Concrete

JSW Cement gears up for IPO

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JSW Cement has set the price range for its upcoming initial public offering(IPO) at US$1.58 to US$1.67 per share, aiming to raise approximately US$409 million. As reported in the news, around US$91 million from the proceeds will be directed towards partially financing a new integrated cement plant in Nagaur, Rajasthan. Additionally, the company plans to utilise US$59.2 million to repay or prepay existing debts. The remaining capital will be allocated for general corporate purposes.

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Concrete

Cement industry to gain from new infrastructure spending

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As per a news report, Karan Adani, ACC Chair, has said that he expects the cement industry to benefit from the an anticipated US$2.2tn in new public infrastructure spending between 2025 and 2030. In a statement he said that ACC has crossed the 100Mt/yr cement capacity milestone in April 2025, propelling the company to get closer to its ambitious 140Mt/yr target by the 2028 financial year. The company’s capacity corresponds to 15 per cent of an all-India installed capacity of 686Mt/yr.

Image source:https://cementplantsupplier.com/cement-manufacturing/emerging-trends-in-cement-manufacturing-technology/

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