A Nigerian technologist’s study reveals that shifting to geopolymer concrete, made from industrial by-products, could cut emissions by up to 80 per cent, offering a promising pathway to decarbonise the construction sector amid current industry barriers.
A Nigerian architectural technologist’s study has put fresh attention on one of construction’s most stubborn climate problems: cement. Ololade Temitope Oduneye, a graduate of Coventry University, argues that the industry’s reliance on cement-heavy concrete remains a major barrier to lower-carbon building, even as more sustainable substitutes are already available.
Her research centres on geopolymer concrete, a material first developed in the 1970s by Joseph Davidovits. Instead of using Portland cement as the main binder, geopolymer formulations rely on industrial by-products such as fly ash and slag, which are then activated with alkaline solutions. That shift matters because cement manufacture is among the most emissions-intensive industrial processes in use today.
Oduneye’s study says geopolymer concrete can cut emissions by as much as 80 per cent in some applications while still delivering structural performance similar to conventional mixes. Broader academic work points in the same direction. A lifecycle study published in the journal Sustainable Materials and Technologies found geopolymer systems could substantially lower global warming potential, while earlier comparisons in the literature estimated emissions savings of about 9 per cent versus ordinary Portland cement concrete. Other case studies have also found that geopolymer concrete can combine carbon reductions with comparable technical performance.
The problem, according to the study, is not whether alternatives exist but whether the industry can scale them. Cost, fragmented supply chains and a lack of widely accepted standards continue to slow adoption. Without clearer rules for specification and certification, developers and contractors often default to familiar materials, even when lower-carbon options are available.
Oduneye points to the Global Change Institute building as an early example of geopolymer concrete being used successfully in practice. The project is presented as evidence that substantial carbon savings can be achieved without sacrificing structural integrity. Her research also widens the lens beyond binders alone, highlighting cross-laminated timber, recycled aggregates and energy-efficient systems as part of a broader low-carbon construction toolkit.
The London Aquatics Centre is cited as another illustration of that approach, with recycled content, water-saving measures and district heating contributing to lower embodied and operational emissions. For industrial decarbonisation professionals, the message is straightforward: the materials shift is technically possible, but progress will depend on standards, procurement choices and policy support catching up with the science.
That urgency is hard to ignore. The construction sector is widely estimated to account for nearly 40 per cent of global greenhouse gas emissions, with cement one of its biggest contributors. Industry data shows that producing one tonne of cement clinker releases roughly one tonne of carbon dioxide, underscoring why material substitution has become such an important part of the climate debate.
Oduneye’s findings add to a growing body of evidence that decarbonising buildings will require more than incremental efficiency gains. If the sector is serious about meeting climate targets, it will have to change what it builds with, not just how it builds.
- https://allafrica.com/stories/202605130614.html – Please view link – unable to able to access data
- https://www.sciencedirect.com/science/article/pii/S0959652621008891 – This study assesses the global warming potential of geopolymer concrete, highlighting its potential to reduce CO₂ emissions compared to traditional Ordinary Portland Cement (OPC) concrete. The research indicates that geopolymer concrete can significantly lower global warming potential, supporting its adoption as a sustainable alternative in the construction industry.
- https://www.sciencedirect.com/science/article/abs/pii/S0950061813000871 – This paper presents a comprehensive comparison of the carbon dioxide equivalent emissions between geopolymer and OPC cement concrete. The findings suggest that geopolymer concrete emits approximately 9% less CO₂ than OPC concrete, emphasizing its environmental benefits and potential for reducing the construction industry’s carbon footprint.
- https://www.sciencedirect.com/science/article/pii/S1568494625013304 – This research evaluates the carbon emissions associated with geopolymer concrete, highlighting its potential to reduce the construction industry’s carbon footprint. The study underscores the importance of adopting low-carbon alternatives to mitigate climate change impacts.
- https://link.springer.com/article/10.1007/s10853-022-07820-6 – This case study assesses the environmental, economic, and technical performance of geopolymer concrete. The findings demonstrate that geopolymer concrete offers a sustainable alternative to traditional concrete, with significant reductions in CO₂ emissions and comparable structural performance.
- https://www.sciencedirect.com/science/article/pii/S3050475925008231 – This study provides a comprehensive lifecycle and performance assessment of geopolymer concrete, comparing it to traditional Portland Cement Concrete. The results indicate that geopolymer concrete offers superior sustainability, with lower global warming potential and improved energy efficiency.
- https://scholars.uky.edu/en/publications/geopolymer-based-concrete-to-reduce-carbon-footprint-of-the-const – This research explores the development of a geopolymer-based composite as a substitute for Ordinary Portland Cement in concrete applications. The study demonstrates that geopolymer concrete can significantly lower the carbon footprint of the construction industry while maintaining structural integrity.
Noah Fact Check Pro
The draft above was created using the information available at the time the story first
emerged. We’ve since applied our fact-checking process to the final narrative, based on the criteria listed
below. The results are intended to help you assess the credibility of the piece and highlight any areas that may
warrant further investigation.
Freshness check
Score:
8
Notes:
The article was published on 13 May 2026, which is recent. However, the content closely mirrors a report from October 2025, raising concerns about originality. ([punchng.com](https://punchng.com/emerging-nigerian-architectural-technologist-driving-innovation-and-sustainability-in-uk-building-design/?utm_source=openai))
Quotes check
Score:
6
Notes:
The article includes direct quotes attributed to Ololade Temitope Oduneye. However, these quotes cannot be independently verified through available sources, which raises concerns about their authenticity.
Source reliability
Score:
5
Notes:
The article originates from AllAfrica, a news aggregator that republishes content from various sources. This raises questions about the independence and originality of the reporting.
Plausibility check
Score:
7
Notes:
The claims about geopolymer concrete reducing emissions by up to 80% are plausible and supported by existing research. However, the article lacks specific details about Oduneye’s study, making it difficult to fully assess the validity of the claims.
Overall assessment
Verdict (FAIL, OPEN, PASS): FAIL
Confidence (LOW, MEDIUM, HIGH): MEDIUM
Summary:
The article raises significant concerns regarding originality, source reliability, and the ability to independently verify quotes. The reliance on a single source and the inability to confirm the authenticity of direct quotes further undermine the credibility of the content. Given these issues, the article does not meet the necessary standards for publication.
