Low Carbon Cement for Sustainable Development of Emerging Economies
November 15, 2016

Development Alternatives (DA) and IITs to share the potential of LC3 cement in promoting sustainable development at the ongoing Marrakech Climate Change Conference tomorrow

By IAT Bureau, New Delhi / MOROCCO

November 15, 2016: World cement production is projected to be around 6 billion tons in 2050. Currently emerging economies are the leading producers and emitters of CO2 in the world from cement production. Production of cement also consumes natural resources in bulk quantities. The sheer volumes of its production contributed about 8% to global CO2 emissions in 2014. However there is a large potential from cement industry in contributing towards sustainable development of emerging economies by shifting to blended cements.

To share more about the possibilities of blended cements, Indian experts will participate in a side event at the ongoing Marrakech Climate Change Conference in Marrakech, Morocco on November 16, 2016. During the event, Dr. Soumen Maity, Team Leader — Technology & Action For Rural Advancement, a subsidiary of global Think Tank- Development Alternatives (DA), will talk about “Application and benefits of LC3 – The India Perspective” and Prof. Ravindra Gettu, Associate Dean — Industrial Consultancy and Sponsored Research, IIT Madras will focus on “Life Cycle Assessment of LC3 – Global Implications.”

The event focuses to showcase the potential of Limestone Calcined Clay Cement (LC3) contributing towards achieving Sustainable Development Goals 9,11, 12 and additional support to 13, reducing CO2 emissions and saving natural limestone resources while achieving durability properties similar to that of general purpose cements. The event will present the global research and application results of LC3 technology and its contribution to lower the carbon emissions. The event will also bring together various stakeholders i.e. research, industry and government in the same platform and discuss on the contribution of LC3 towards sustainable growth of emerging economies around the world.


Limestone Calcined Clay Cement (LC3)

This new blend of cement which substitutes up to 50% of clinker from conventional cement and reduces 30% of CO2 has been developed by a consortium of EPFL, IIT Delhi, IIT-Madras, IIT-Bombay, TARA and CIDem through a project supported by Swiss Agency for Development and Corporation (SDC). The blend has two major advantages for sustainable production, one; about 45% of raw material in the blend is waste, two; clinker content is reduced to 50%. Waste china clay is calcined at 800-9000C and ground with clinker, gypsum and waste limestone. The produced cement is named as Limestone Calcined Clay Cement (LC3). Life Cycle Analysis reveals that LC3 production can reduce CO2 emissions up to 30% and save up to 50% limestone as compared to conventional cement. The cement is found have comparable durability and strength with conventional cement.

About Marrakech Climate Change Conference

The Marrakech Climate Change Conference will continue till 18th November 2016, in Marrakech, Morocco. At this session the 22nd Conference of the Parties (COP 22) to the UN Framework Convention on Climate Change (UNFCCC), the 12th Conference of the Parties serving as the Meeting of the Parties to the Kyoto Protocol (CMP 12), and the 1st Conference of the Parties serving as the Meeting of the Parties to the Paris Agreement (CMA 1) will take place. The 45th sessions of the Subsidiary Body for Implementation (SBI 45) and the Subsidiary Body for Scientific and Technological Advice (SBSTA 45), and the second meeting of the first session of the Ad Hoc Working Group on the Paris Agreement (APA 1-2) will also convene.