IIT Madras researchers invent cement with low carbon emissions

04 Oct 2022 CW Team

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.

Infrastructure Urban

06 Nov 2025

Concord Control Systems Limited Reports ~85% YoY Growth in H1 FY26

Concord Control Systems Limited (BSE: CNCRD | 543619), India’s leading manufacturer of embedded electronic systems and critical electronic solutions, announced its unaudited financial results for the half year ended September 30, 2025.Financial Highlights – H1 FY26 (YoY Comparison)Revenue from Operations rose to ₹815.45 million, up from ₹497.53 million in H1 FY25, marking a 63.90% year-on-year growth.EBITDA increased to ₹217.34 million, compared to ₹142 million in the same period last year.EBITDA Margin stood at 26.65%, compared to 28.54% in H1 FY25, with the decline attributed to ..

Gateway Distriparks Announces Q2 FY25 Results

Gateway Distriparks Limited (GDL), one of India’s leading multimodal logistics providers, announced its financial results for the quarter ended 30 September 2025.For Q2, the company reported total revenue of INR 154.8 crore (H1: INR 316.9 crore), EBITDA of INR 20.56 crore (H1: INR 45.65 crore), PBT of INR –4.23 crore (H1: INR –0.28 crore), and PAT of INR –2.91 crore (H1: INR –0.37 crore). The company stated that these numbers reflect the consolidation of accounts following Snowman Logistics transitioning from an associate company to a subsidiary in December 2024.Commenting on the per..

Last-Mile Connectivity a Prime Focus, Says Ms. Ashwini Bhide,

The IMC Chamber of Commerce and Industry (IMC) hosted a high-impact Managing Committee session today on the theme “Mumbai Metro: Transforming Connectivity and Commuting.” The session featured an insightful address by Ms. Ashwini Bhide, Managing Director, Mumbai Metro Rail Corporation Ltd. (MMRCL), who shared updates on key transport infrastructure developments across Mumbai and the MMR region.Emphasising the city’s critical economic role, Ms. Bhide noted, “Mumbai is the economic powerhouse of Maharashtra, with more than 95% of the region’s population living in urban areas. As Maharas..