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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

Lokesh Lays Stone For Rs 31 Billion Cement Unit In Kadapa

Line-2 expansion to make Kadapa a major cement hub

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Andhra Pradesh Education and IT Minister Nara Lokesh on Wednesday laid the foundation stone for the Line-2 expansion of Dalmia Bharat Cement at Chinnakomerla village in Mylavaram Mandal in Kadapa district. The project carries an investment of Rs 31 billion (bn) and is slated for completion by the third quarter of the financial year 2028. The expansion is intended to boost industrial growth and employment generation across the Rayalaseema region.

Once commissioned, the Kadapa facility will become Dalmia Bharat’s largest integrated cement manufacturing ecosystem in southern India, creating over 1,000 direct and indirect jobs and opening new business avenues for regional micro, small and medium enterprises and transport operators. Lokesh said the expansion signalled growing corporate confidence in the state and reflected the practical ease of doing business that secured repeat investment.

He placed the project within the government’s wider economic targets and recalled the Yuvagalam padayatra commitment to generate two million (mn) jobs within five years, noting that the state would cultivate talent while industry created opportunities. Lokesh highlighted Andhra Pradesh’s competitive pursuit of major manufacturing accounts, mentioning past successes and a personal initiative to engage global investors when persuading them to anchor expansion in the state.

The plant will leverage Kadapa’s abundant limestone reserves to scale production and sustainability. Clinker capacity is planned to rise from two point five million tonnes per annum (mn tpa) to six point one mn tpa, while overall cement output will increase from three point six mn tpa to nine point six mn tpa. The unit is designed to operate on over eighty per cent renewable energy and deploy waste heat recovery, zero liquid discharge, water recycling and advanced AI systems to optimise efficiency. Industries Minister TG Bharat, BC Welfare Minister S. Savitha and Jammalamadugu MLA C. Adinarayana Reddy attended the ceremony.

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Concrete

Cement Prices to Stay Flat in Q2 FY27 as Costs Squeeze Margins

HDFC Securities warns monsoon slowdown and higher fuel costs

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HDFC Securities has said the cement industry is unlikely to register a sequential increase in prices in Q2 FY27 as monsoon-related demand moderation coincides with rising fuel and packaging costs that will squeeze margins. The brokerage observed that price gains remained modest, with increases of two to three per cent quarter-on-quarter across regions, and noted subdued offtake in May with improvement in June as a delayed monsoon supported construction activity. The brokerage added that modest pricing gains so far have been insufficient to offset the input cost escalation.

The report stated that input cost pressures intensified in Q1 FY27 owing to the West Asia conflict, which pushed up coal and pet coke prices and is expected to keep fuel costs elevated, with a likely peak in Q2 FY27. It assessed that total variable costs, including packing, could rise by around Rs 150 per t quarter-on-quarter and that lower offtake and seasonal operating deleverage could further raise operating expenditure by about Rs 50 per t quarter-on-quarter.

Overall, cement prices were estimated to remain flat in Q2 FY27 as monsoon-led demand weakness offsets limited upside in realisation, and rising fuel costs alongside seasonal deleverage were expected to compress industry margins by over Rs 100 per t quarter-on-quarter to below Rs 880 per t. The brokerage indicated that the combined impact of energy inflation and higher packing expenditure would be the principal drivers of margin contraction in the near term. HDFC Securities projected a recovery in margins in H2 FY27 should the West Asia turmoil subside and energy and packing costs cool off.

The brokerage expressed optimism on long-term demand fundamentals and said improving realisation together with an anticipated cost cool-off should support a margin rebound from H2 FY27 onward, underpinning favourable industry prospects over the medium term. Its outlook rests on monsoon normalisation and a decline in imported fuel prices in the second half of the fiscal year.

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Concrete

Dalmia Bharat Begins Rs 31 Bn Green Cement Unit in Kadapa

New Andhra Pradesh plant to add 9.6 MTPA cement capacity by FY28

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Dalmia Bharat Limited recently laid the foundation stone for its second manufacturing unit at Kadapa in Andhra Pradesh. The company will invest Rs 31 billion in developing the next-generation integrated cement manufacturing facility.
The foundation-laying ceremony was attended by Nara Lokesh, Andhra Pradesh Minister for Information Technology, Electronics and Communications, Real-Time Governance and Human Resources Development, along with Puneet Dalmia, Managing Director and Chief Executive Officer, Dalmia Bharat, senior government officials and company representatives.
Scheduled to be commissioned by the third quarter of FY28, the Kadapa unit will become Dalmia Bharat’s largest integrated manufacturing facility in southern India. It will have a clinker production capacity of 6.1 million tonnes per annum and a cement manufacturing capacity of 9.6 million tonnes per annum.
The facility is designed to produce what the company describes as one of the world’s greenest cements. It is also expected to generate approximately 1,000 direct and indirect employment opportunities while supporting local MSMEs, transporters, contractors and service providers.
Lokesh said the investment reflected Dalmia Bharat’s confidence in Andhra Pradesh and aligned with the state’s objective of promoting sustainable industrialisation, job creation and technology-led economic growth.
Puneet Dalmia said the project represented the company’s long-term vision of developing low-carbon cement manufacturing assets. He added that the facility would establish new benchmarks in operational efficiency and sustainability while supporting India’s infrastructure and environmental goals.
Dalmia Bharat will also expand its regional community development programmes in education, healthcare, skill development and welfare through its DIKSHa and Gram Parivartan initiatives.
The company currently has an installed cement manufacturing capacity of 54.7 million tonnes across 19 manufacturing units in 12 states. It is also the first cement company globally to commit to the RE100, EP100 and EV100 initiatives.

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