+
IIT Madras researchers invent cement with low carbon emissions
Cement

IIT Madras researchers invent cement with low carbon emissions

A Sustainability Impact Assessment of Limestone Calcined Clay Cement (LC3) in a project financed by the Swiss Agency for Development and Cooperation reveals a decrease of roughly 40% in CO2 emissions and 20% less energy for production when compared to standard Portland cement.

Simultaneously, research was conducted by IIT Madras, IIT Delhi, TARA (Development Alternatives) New Delhi, UCLV (Central University "Marta Abreu" of Las Vilas) in Cuba, and EPFL (Swiss Federal Institute of Technology Lausanne) in Switzerland, with funding from the Swiss Agency for Development and Cooperation, India, has shown that the concrete produced with this cement exhibits excellent strength and durability characteristics.

Limestone Calcined Clay Cement (LC3) is cement that combines Portland cement clinker, calcined kaolinitic clay, and limestone with gypsum. Because the manufacturing of clinker entails the burning of limestone, the amount of cement clinker is limited to only 50 per cent, implying a significant reduction in CO2 emissions.

The clay used in LC3 is usually a non-ceramic grade raw material extracted from China clay mines including the overburden, while the limestone used in the blend can be from low-grade sources that are not suitable for cement manufacture.

Sustainability impact assessment has clearly demonstrated a reduction of nearly 40 per cent of CO2 emissions, and about 20 per cent lower energy for the production of LC3 as compared to ordinary Portland cement.

A Sustainability Impact Assessment of Limestone Calcined Clay Cement (LC3) in a project financed by the Swiss Agency for Development and Cooperation reveals a decrease of roughly 40% in CO2 emissions and 20% less energy for production when compared to standard Portland cement. Simultaneously, research was conducted by IIT Madras, IIT Delhi, TARA (Development Alternatives) New Delhi, UCLV (Central University Marta Abreu of Las Vilas) in Cuba, and EPFL (Swiss Federal Institute of Technology Lausanne) in Switzerland, with funding from the Swiss Agency for Development and Cooperation, India, has shown that the concrete produced with this cement exhibits excellent strength and durability characteristics. Limestone Calcined Clay Cement (LC3) is cement that combines Portland cement clinker, calcined kaolinitic clay, and limestone with gypsum. Because the manufacturing of clinker entails the burning of limestone, the amount of cement clinker is limited to only 50 per cent, implying a significant reduction in CO2 emissions. The clay used in LC3 is usually a non-ceramic grade raw material extracted from China clay mines including the overburden, while the limestone used in the blend can be from low-grade sources that are not suitable for cement manufacture. Sustainability impact assessment has clearly demonstrated a reduction of nearly 40 per cent of CO2 emissions, and about 20 per cent lower energy for the production of LC3 as compared to ordinary Portland cement.

Next Story
Infrastructure Urban

Budget Proposal Aims to Boost Investments

The recent budget proposal has introduced measures designed to promote investments and generate job opportunities across various industries, as reported by the Economic Times. This initiative seeks to stimulate economic activity and strengthen the country's growth trajectory by encouraging both domestic and foreign investments. Key aspects of the proposal include targeted incentives for sectors poised for expansion, such as renewable energy, infrastructure, and technology. The government aims to create a more favorable investment climate by offering tax benefits, subsidies, and streamlined reg..

Next Story
Infrastructure Urban

Indian Financial System Resilient Amidst Challenges

The Reserve Bank of India (RBI) Deputy Governor M. Rajeshwar Rao has emphasized the robust nature of the Indian financial system despite global economic headwinds, according to Economic Times. Rao?s comments reflect confidence in the stability and resilience of India's financial sector amidst a backdrop of international economic uncertainties and financial volatility. Rao highlighted that India?s financial system is well-equipped to handle external shocks due to its solid regulatory framework and prudent risk management practices. The country?s banking sector has demonstrated resilience throug..

Next Story
Infrastructure Energy

SC Allows State Tax on Mines, Minerals

Opposition leaders have welcomed the Supreme Court's recent decision permitting states to levy taxes on mines and mineral-bearing lands, as reported. The ruling is seen as a significant victory for state governments seeking greater control and revenue from natural resource extraction within their jurisdictions. The Supreme Court?s decision empowers states to impose taxes on mining operations and mineral-rich lands, which could enhance their revenue streams and enable better management of local resources. This move is particularly important for states with substantial mineral resources, as it a..

Talk to us?