Displaying items by tag: Sustainability

We return to Brazil this week where Cimento Itambé has inaugurated a new kiln at its plant in Balsa Nova, Parana. The US$92m investment has added 0.6Mt/yr of cement production capacity to the unit, bringing its total to 3Mt/yr. Notably, the new kiln is intended to support the use of alternative fuels (AF) such as biomass and industrial waste. Local press reports that the new kiln can operate with a 50% AF thermal substitution rate (TSR) and in tests it has reached as high as 67%.

Local market leader Votorantim Cimentos has also embarked on an upgrade programme linked to increasing co-processing rates. In May 2025 it said that it had received and begun installing a new cement mill, supplied from China, at its Salto de Pirapora plant near São Paulo. Earlier in August 2025 it revealed that it was spending US$60m on upgrades at its Nobres and Cuiabá plants in Mato Grosso. A new cement grinding mill is to be installed at the Nobres plant. This should increase the site’s cement production capacity to 1.2Mt/yr from 0.6Mt/yr. At Cuiabá the company is installing a tyre shredding unit via its Verdura subsidiary to support increased rates of co-processing of AF. Work on these projects is set to start in 2025 with completion scheduled by the end of 2026.

These schemes are part of the group’s larger US$920m upgrade investment plans across the country. Announced in early 2024, this is intended to increase competitiveness and co-processing capacity and reduce CO₂ emissions. It will also add 3Mt/yr to the company’s production capacity. An investment of US$150m from the International Finance Corporation (IFC) in 2023 to Votorantim to support the uptake of AF is likely to have helped the decision to upgrade. The company currently has a target of a 50% TSR by 2030.

Of the other major producers, CSN is also aiming for a 50% TSR by 2030. It said in its 2024 sustainability report that all of its kilns were capable of processing AF. It also highlighted upgrade work at its Alhandra, Paraíba, plant in 2024 to handle, store and transport fuels, including biomass. InterCement reported some relatively high TSRs at individual plants in Brazil in 2023. For example, its Ijaci plant in Minas Gerais reportedly had a rate of 42%.

National Cement Industry Union (SNIC) data shows that the co-processing rate of AF reached 32% in 2023. The union says that this puts the sector ahead of its next target of 30% in the mid-2020s. The next one is to reach 35% by 2030. For reference, back in 2019 the country’s Cement Technology Roadmap reported that around 60% of cement kilns in the country were licensed by environmental agencies to co-process waste.

Graph 1: Sales of cement in Brazil, 2017 - 2025. Source: SNIC.

Looking at the domestic industry in general, SNIC reported growth in 2024 and the first seven months of 2025. Sales for the first seven months of the year grew by 4% year-on-year to 38.2Mt. This has been attributed to the real estate sector, boosted by the Minha Casa Minha Vida housing programme, and an expanding job market. Yet jitters remain, with fears of an economic slowdown in the second half of 2025 and uncertainty on how new US tariffs might affect the cement industry indirectly. Despite only exporting around 65,000t of cement in 2024 though, the association is wary of any indirect effects of tariffs.

It’s no surprise that cement plants in Brazil are prioritising AF usage. The market is buoyant and co-processing offers one of the cheapest routes to decarbonising cement production in the short-to-medium term. Increasing the use of AF can also potentially hedge against the cost of imported conventional fuels, such as coke, that are priced in US dollars. This is one example of SNIC’s concern over indirect effects on the cement industry from US tariffs via currency volatility. Expect AF rates to carry on rising.

The 18th Global CemFuels Conference & Exhibition on alternative fuels for cement and lime will take place on 17 - 18 September 2025 in Milan, Italy

Mexico: Cementos Moctezuma has established what it calls an ‘ambitious’ plan to reduce its embodied CO₂ emissions per tonne of cement to below 500kg by 2030. José María Barroso Ramírez, Cementos Moctezuma's CEO, explained that the company will optimise efficiency at every stage of production, without compromising cement quality. The company’s cement plants will also co-process up to 30% of alternative fuels. Maribel Leyte Jiménez, director of sustainability, environment, and continuous improvement, emphasised that reducing the clinker factor – while maintaining performance – is also key to lower emissions.

Cementos Moctezuma's 2030 roadmap is based on health and safety, energy and climate change, social responsibility and the environment, as well as biodiversity and the circular economy. These pillars are used to evaluate the company's performance each year.

One of the projects being carried out by the company is Reef Balls, in which artificial reefs are used to repopulate coastal areas with flora and fauna. Engineer José María Barroso points out that the implementation of approximately 500 Reef Balls would lead to a reduction of more than 1200t of CO₂. This initiative has been carried out in the state of Yucatán, but plans are underway to replicate the project on more beaches in Mexico.

US: Supplementary cementitious materials (SCM) producer Eco Material Technologies has published its 2024 Sustainability Report, detailing the measures it has employed to reduce its environmental impact over the year. The producer said that its SCM displaced 5% of US cement consumption, avoiding 5.5Mt of CO₂ emissions. The company diverted 6.2Mt of ash from landfill and harvested a further 0.5Mt, reducing water use by 7.57bn litres compared to conventional materials. It produced 73,292t of ‘green’ cement, avoiding over 65,000t of CO₂, and aims to double recycled material use to 20Mt by 2030.

Chief executive officer Grant Quasha said “We're proving that domestic fly ash is not only a powerful climate solution, but also a resilient and scalable one. The infrastructure transformation is already underway, and we're proud to be leading it.”

Eco Material Technologies operates 125 sites in 42 states and employs 1100 people.

Costa Rica: Holcim Costa Rica has issued its first sustainability report, which states that it reduced CO₂ emissions by 19% between 2018 and 2024. During the last year, the company prevented the release of more than 4600t of CO₂ thanks to improvements in thermal efficiency. It also processed more than 72,000t of municipal and industrial waste as energy or alternative fuel in cement production and reused more than 90% of the industrial water consumed at its cement plant. It reported that it has reached gender equality within its executive team, with 50% female and 50% male leadership.

Holcim Costa Rica’s 2030 goals include achieving a 32% reduction in primary CO₂ emissions from cement plant operations, a 5% reduction in electricity consumption and a 21% reduction in logistics emissions, while reaching a net positive impact on biodiversity, and reducing the use of fresh water.

Mexico: Holcim has placed Mexico at the centre of its NextGen Growth 2030 strategy to ‘drive profitable expansion’ in Europe, Australia, North Africa and Latin America following the spin-off of its North American business. Mexico now plays a strategic role in scaling sustainable construction solutions across the region and will allow Holcim to respond to key global trends such as urbanisation, housing shortages, resilient infrastructure and environmental sustainability.

Holcim Mexico CEO Christian Dedeu said “Mexico is now a strategic market where we will scale innovative solutions for circular and low-carbon construction. Our goal is to triple the recycling of demolition materials, double the Disensa store network and expand our sustainable offering through ECOPact and ECOPlanet.”

Dedeu added “In a region facing major social and environmental challenges, Mexico and Latin America have the potential to lead a new era of sustainable construction. At Holcim, we are committed to scaling solutions that address the climate emergency while building progress for people and the planet.”

US: Hoffmann Green Cement Technologies has obtained ASTM C1157 certification for its H-UKR 0% clinker cement after several months of testing and trials at the University of Miami.

The benchmark standard evaluates cements on their performance, regardless of their composition. H-UKR cement is now officially recognised as a hydraulic cement that can be used in all general construction applications, whether structural or non-structural. Hoffmann Green said that this is the first time that a 0% clinker cement has obtained this certification.

Co-founders Julien Blanchard and David Hoffmann said “This international technical recognition marks a decisive step forward in our certification process, which is part of a broader ambition to expand the applications of our 0% clinker cement through continuous innovation. It validates the reliability and sustainability of our technology on a global scale, in accordance with the most demanding standards. With this certification, H-UKR has confirmed itself as a game changer technology capable of profoundly transforming an industry that has remained unchanged for more than two centuries.”

Ghana: Ghacem has launched ECO COOL, Ghana’s first eco-friendly cement, according to My Joy Online news. The producer says the new product reduces environmental impact while maintaining high construction standards.

At the launch event, managing director Frank Huber said “At Ghacem, we want to lead the path in sustainable construction. We’ve set a clear target — to become 100% CO₂ neutral by 2050. ECO COOL is designed for all building applications, but with significantly lower environmental impact.”

Togo: Cement producers in Togo have committed to reduce CO₂ emissions by 2050 by lowering the clinker factor and increasing the use of alternative fuels. At a meeting in Lomé on 30 June 2025, manufacturers set out a roadmap that includes large-scale adoption of limestone calcined clay cement (LC3) to reduce clinker content from 65% to 40%, potentially cutting emissions by up to 40% without sacrificing performance, according to the Togo First newspaper.

The strategy also involves replacing coal with agricultural or municipal waste. Industry data shows that cement production generated 0.9Mt of CO₂ in 2023, which could rise to 1.8Mt by 2050 without intervention. Manufacturers are seeking regulatory support to help deliver the roadmap, which aligns with Togo’s Paris Agreement commitments.

Sweden: SaltX has announced a partnership with Holcim to develop technology and solutions that electrify and enable the decarbonisation of the entire cement manufacturing process. As part of the partnership, Holcim is becoming a strategic shareholder in SaltX through an investment of approximately US$4m. 

The companies intend to co-develop and advance SaltX’s electrification technology for calcination, including the production of Portland cement clinker. The goal is to be the first in the world to establish a scalable plant concept for fully electrified cement facilities. The parties’ intention is for the partnership to be extensive, featuring a collaborative go-to-market and scale-up plan. The initial focus is on developing the world’s first all-electric pilot plant for emission-free cement production. This will set the foundation to establish multiple large-scale production facilities based on SaltX’s electrification technology.  

Greece: Titan Group has been named by Time Magazine as one of the most sustainable companies in the world, rising 158 positions to 150th in the annual list of 500 companies. Titan Group said that it is the highest-ranked building materials company and one of only a handful on the list. Time Magazine and data firm Statista assessed companies based on external ratings, commitments and various environmental and social Key performance indicators (KPIs) disclosed in externally-assured reports.

Leonidas Canellopoulos, Chief Innovation and Sustainability Officer at Titan Group, said "Being named one of the world’s most sustainable companies by Time for the second year in a row is a powerful endorsement of our growth strategy in action. Sustainability is woven into every decision we make – from bold innovation in new products and decarbonised processes to transparent execution.”