The Material Mix Podcast

Welcome to The Material Mix, the podcast series by Holcim exploring sustainable building materials innovation.

Episode 1 - Mind the Carbon Gap

Our first episode, Mind the Carbon Gap, explores the path to decarbonisation for one of the UK’s most essential building materials, cement.

Cement is a versatile and important building commodity, but its production is also carbon intense, accounting for around 8% of global emissions and around 1.5% of all UK carbon emissions.

As an industry, we’re already exploring multiple mitigation measures to reduce the carbon per tonne in its production, but even with all this, there is still a gap to plug if we want to achieve net zero.

Ultimately, the best solution we have is to capture carbon at source, and re-use or safely store it away. How is the industry tackling this challenge?

Find out more in this episode of the material mix, where we’ll be unpacking the innovations, the policy shifts and the industry wide collaborations shaping the next generation of low carbon cement.

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Guest Details

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Hannah MacInnes is a professional broadcaster, journalist and podcast host with extensive experience interviewing leading figures across climate, culture, sport and politics, including Bill Clinton, Jacinda Ardern and Louis Theroux. She hosts How To Academy’s live programmes and podcast, regularly presents on Times Radio, and previously spent eight years at BBC Newsnight as Planning Editor.

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Diana Casey is a senior industry association leader specialising in energy-intensive industries and their transition to net zero, with a strong track record of influencing policy for the UK cement sector. She currently shares CEO responsibility for the Mineral Products Association and represents the industry on sustainability and emissions trading at national and international level.

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Leon Black is an analytical chemist specialising in the structure, stability and sustainability of cementitious materials, with a particular focus on low-clinker cements and alternative binders. He leads the Centre for Infrastructure Materials at the University of Leeds and serves in senior editorial roles across several leading cement and materials science journals.

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Tom Redfern is Head of Sustainability at Holcim UK, where he leads the company’s efforts to advance low-carbon materials, nature-positive initiatives and circular practices across the built environment. He regularly engages on sustainability strategy, biodiversity and decarbonisation in construction through industry platforms, podcasts and public commentary.

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