Meru University Scientists Make Clay-Based Cement for Climate Change and Affordable Housing
Meru University of Science and Technology (MUST) scientists have developed clay-based cement to tackle climate change and reduce housing costs, aiming to provide an eco-friendly and affordable alternative to meet the growing demand for housing.
Dr. Joseph Mwiti, in charge of TRC Africa and director of the Institute of Cement and Concrete at the university, expressed confidence that the innovation, known as Limestone Calcined Clay Cement (LC3), will soon be available in the market, playing a crucial role in mitigating climate change effects.
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The primary goal of this innovation is to decrease the reliance on clinker, the solid material involved in conventional cement production, which is a major contributor to carbon dioxide emissions. Mwiti emphasized that transitioning to clay-based cement will not only reduce carbon dioxide emissions but also lower production costs.
“Cement industry emits between six and eight per cent of carbon dioxide emissions, making it the third most polluting industry globally,” Mwiti stated. To support the widespread adoption of LC3 in Sub-Saharan Africa, a resource center has been established at MUST’s main campus in Nchiru, Tigania West sub-county.
Scientists from Israel, Switzerland, and Cuba visited for the launch of the alternative cement laboratory, collaborating on the development of this groundbreaking product.
The resource center, dedicated to promoting the use of limestone calcined clay cement, will serve as a hub for research and development. Once the cement undergoes thorough testing at both laboratory and industrial scales, mass production will be the next step.
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Mwiti highlighted the cost-saving aspect of LC3, asserting that it will contribute to the realization of affordable housing and essential infrastructure in the built environment. Additionally, the use of locally available clay will reduce the need for clinker imports, providing stability to cement prices and reducing vulnerability to international market fluctuations.
As Mwiti stated, “We are part of the fight against climate change and part of the solution to the much-needed cement in Sub-Saharan Africa.” The innovative approach not only addresses environmental concerns but also presents opportunities for job creation and economic development, particularly in regions abundant with clay.
Karen Scrivener from EPFL, a Swiss university, praised the launch of the center, emphasizing its potential to help Africa meet its housing needs with minimal climate impact. She noted the importance of considering climate issues while ensuring that people’s housing needs are met.
Meru University Scientists Make Clay-Based Cement for Climate Change and Affordable Housing