Brazil: Votorantim Cimentos has made progress in reducing its carbon footprint, reporting embodied CO₂ emissions of 556kg/t of cement produced in 2023, a 4% year-on-year decrease. The company aims to reach a target of 475kg of CO₂/t by 2030, aligning with the Science Based Target initiative standards.

The company's decarbonisation strategy involves four stages: co-processing, which involves substituting fossil fuel with biomass and waste; use of cementitious materials to replace clinker; enhancing energy efficiency and use of renewable energy; and developing new technologies and materials, including carbon capture. In 2023, Votorantim Cimentos achieved a 31% global thermal substitution rate through co-processing, an increase from 26.5% in 2022, with a goal of reaching 53% by 2030. The clinker factor was reduced to 72.8% in 2023 from 73.9% in 2022. This reduction means a decrease in emissions, with a target clinker factor of 68% set for 2030. Additionally, 35.1% of the electricity consumed by Votorantim Cimentos in 2023 came from renewable sources, an increase from 22.9% in 2022, with an aim of 45% by 2030.

Álvaro Lorenz, global director of sustainability, institutional relations, product development, engineering, and energy at Votorantim Cimentos, said "The most competitive and sustainable companies will be those with the lowest emissions. In all countries where we operate, we are committed to advancing in our decarbonisation journey, in line with our goal of producing carbon-neutral concrete by 2050."

Votorantim Cimentos’ environmental efforts were recognised with an A score by CDP and a Top-Rated Industry company distinction by Sustainalytics in the Latin American building materials sector. The company also announced a US$989m investment to further reduce its CO₂ emissions. This includes a project at Salto de Pirapora to increase thermal substitution, with expected completion by 2028. Votorantim Cimentos has also started constructing a solar energy complex in Paracatu, with an estimated capacity of 470MWp.

South Korea: A recent study from Daejeon explored the potential of low-lime calcium silicate cement as a low CO₂ emission alternative to Ordinary Portland Cement. Researchers from the Korea Institute of Geoscience and Mineral Resources examined the setting and flow characteristics of a mixture of Ordinary Portland Cement and low-lime calcium silicate cement under carbonation curing conditions. The study was financially supported by the Ministry of Trade, Industry & Energy's industrial strategic technology development programme.

The study aimed to explore the reaction and microstructural characteristics of these cement pastes. The low-lime calcium silicate cement was synthesised using limestone and silica fume, with varying proportions added to the Portland cement pastes. The research findings suggest improvements in compressive strength with the inclusion of 30% or more low-lime calcium silicate cement, highlighting its ability to enhance the durability and sustainability of construction materials.

US: A research team from Lehigh University has won a three-year, US$2m grant from the Department of Energy's industrial efficiency and decarbonisation office for a project on concrete decarbonisation. The team, including Carlos Romero, director of Lehigh's Energy Research Centre, aims to develop a sustainable concrete binder using calcined clay, reducing emissions associated with Ordinary Portland Cement production. The project collaborates with Buzzi Unicem USA and focuses on processing and testing calcined clay to mimic the properties of conventional cement.

Lehigh's team will explore various low-grade calcined clays, supplied by Buzzi, testing their compressive strength and durability. The goal is to halve the CO₂ emissions of traditional concrete mixes.

Chair of the Department of Civil and Environmental Engineering Shamim Pakzad said "I am excited about the expansion of the research portfolio of CEE departments into this area of greener cement, which opens many opportunities for future research and implementation in industry."

India: The Adani family has increased its stake in Ambuja Cements by 3.6% to 66.7% following an investment of just under US$800m. The move follows an investment of around US$600m that the board of the company approved in October 2022. The cement producer intends to use the additional finance to meet its target of reaching a cement production capacity of 140Mt/yr by 2028.

Ajay Kapur, the CEO of Ambuja Cements, said "This infusion of funds provides flexibility for fast-tracked growth, capital management initiatives and best-in-class balance sheet strength. It is not only the testament to steadfast belief in our vision and business model but also reinforces our commitment to delivering long-term sustainable value creation to our stakeholders and this shall propel us towards setting new benchmarks accelerating our growth and continue to deliver on operational excellence, business synergies and cost leadership."

Adani Group acquired Ambuja Cements and ACC from Switzerland-based Holcim in September 2022.

India: UltraTech Cement has increased its cement production capacity by 2.4Mt/yr through debottlenecking at integrated and grinding plants in Gujarat, Rajasthan and West Bengal. Following the improvement exercise its total domestic capacity is 141Mt/yr and worldwide it is 146Mt/yr. The improvements were made at the Pali integrated plant in Rajasthan and grinding plants at Magdall in Gujarat, Sonar Bangla in West Bengal and Neem ka Thana in Rajasthan.

India: UltraTech Cement plans to acquire a 26% stake in O2 Renewable Energy for around US$2m. It is making the purchase to support the energy requirements of its plants from renewable sources, according to the Times of India newspaper. O2 Renewable Energy is currently building a solar power plant in Karnataka that is expected to generate 35 – 48MW.

Kyrgyzstan: The Terek-Tash cement plant in the Kemin district is expected to commence operations in August 2024. Akylbek Japarov, the chair of the country’s Cabinet of Ministers, made the announcement as part of a tour of the Chuy region, according to the Trend News Agency. The plant will have a production capacity of over 1Mt/yr and has had an investment of US$160m. The Russian-Kyrgyz Development Fund has contributed US$45m to the project. Once completed the plant is expected to be one of the country’s largest industrial units. It will also use ash from the Bishkek thermal power plant.

UAE: Fujairah Cement’s revenue fell by 8% year-on-year to US$93.6m in 2023 from US$102m in 2022. It reported a net loss of US$72.3m, up by 85% from a loss of US$39.2m. The company blamed the situation on higher production costs due to rising coal and fuel prices. It said that it plans to increase its cement sales volumes domestically and internationally to improve its capacity utilisation rate. It operates an integrated cement plant at Dibba in Fujairah Emirate.

South Africa: PPC’s revenue grew strongly in the 10 month period to 31 January 2024 mainly due to sales growth from its subsidiary in Zimbabwe. Revenue also mounted in the group’s South African and Botswana cement business, where prices rises offset falling sales volumes. Earnings grew across the business. The company said that sales volumes in the coastal region of South Africa “experienced a sharper decline than in the inland region, mainly due to a weaker retail market and a lack of infrastructure projects in the area.” It added that the performance in group’s South Africa and Botswana units had further deteriorated in February and March 2024. In Zimbabwe sales benefitted from both residential construction and government funded infrastructure projects, constrained imports and a low base in the previous reporting period.

PPC completed the sale of its 51% stake in Rwanda-based Cimerwa to Kenya-based Devki Group subsidiary National Cement in late January 2024.

Netherlands: Ireland-based Ecocem has agreed a deal with Overslagbedrijf Moerdijk (OBM) to expand production and storage capacity at the company’s Moerdijk slag cement grinding plant. The project is intended to allow the unit to both produce and store the company’s advanced cement technology (ACT) product. It will quadruple the storage capacity for key materials at the site up to 40,000t. Ecocem has signed a long-term agreement to lease the site from OBM, who will manage the handling and storing materials on Ecocem’s behalf.

This expansion of the Moerdijk plant is part of Ecocem’s plans to expand its manufacturing and storage capacity to support the commercialisation of ACT across all its plants. It follows the expansion of its Dunkirk plant in France, which was announced in June 2023. These expansion plans will be supported by licencing and partnership strategies to accelerate availability and adoption of scalable low clinker cement at speed.

Conor O’Riain, Managing Director (Europe), at Ecocem, said: “We are increasing our capacity at all of our locations and our deal with OBM is a hugely important aspect of our expansion strategy. It will accelerate our ability to manufacture ACT our low clinker cement technology and make it available commercially by 2026. At the same time, we are actively pursuing licensing and partnership agreements in the construction industry to ensure the benefits of this technology are shared widely and we accelerate progress to Net Zero.”

In February 2024 Ecocem said that its ACT technology received an ETA (European Technical Assessment), which provides the technology with a route to full commercialisation by 2026.