Displaying items by tag: Alternative raw materials

Switzerland: The first nine months of 2025 yielded a 2% year-on-year decline in sales for Holcim, from US$15.3bn to US$15bn. Nonetheless, the company succeeded in raising its recurring earnings before interest and taxation (EBIT) by 2% to US$2.86bn. It recorded year-on-year organic growth of 3% in sales and 11% in EBIT. Holcim noted the centrality of sustainability in its growth in the period. Its sales of ECOPlanet reduced-CO₂ cement rose from 32% to 35% of total cement sales, while its sales of ECOPact reduced-CO₂ concrete sales from 26% to 31% of total ready-mix concrete sales. Its use of construction-demolition materials (CDM) in production rose by 20% year-on-year.

During the period, Holcim continued its on-going diversification through the acquisition of Germany-based walling systems producer Xella. At the same time, the company’s cementitious division continued to target ‘profitable growth in highly attractive markets,’ as exemplified through its Australia-based joint venture Cement Australia’s acquisition of BCG Cement. Across all divisions, Holcim closed 14 value-accretive transactions in the period. It spun off Holcim North America and sold its Nigerian cement business and Iraq-based Karbala Cement Manufacturing.

CEO Miljan Gutovic thanked Holcim’s 45,000 employees, saying "We are delivering on Holcim's vision to be the leading partner for sustainable construction. With accelerating net sales growth in the third quarter of 2025, we delivered strong profitable growth for the first nine months of the year, with a 10% increase in recurring EBIT in local currency and an industry-leading margin of 19%. Margin expansion was driven by our high-value strategy, scaling up our sustainable offering to meet customer demand, and accelerating decarbonisation and circular construction for profitable growth.” Gutovic confirmed Holcim’s full-year guidance for 2025, namely: recurring EBIT growth of 6 – 10% in local currency, with a margin of above 18% and free cash flow before leases of US$2.51bn.

Canada: Progressive Planet Solutions has hired Japan-based independent technical consultant Gerhard Albrecht. Albrecht’s work for Progressive Planet Solutions will focus on issues around the increased water demand of cement replacement by pozzolanic materials.

Albrecht has created over one hundred patents and appeared in more than 30 papers during his career as Vice President at Germany-based BASF Construction Solutions from 2006 to 2017. He previously held senior research positions at Degussa Construction Chemicals and SKW Trostberg. Albrecht holds a PhD in polymer science from Friedrich-Schiller University Jena, Germany.

North Korea: State-owned Komusan Cement has successfully deployed alternative raw materials derived from quarry overburden in cement production at its Komusan cement plant in Hamgyŏng Province. State-run Korean News has reported that the producer presented the resulting products at a provincial building materials exhibition.

The Komusan cement plant reportedly had ‘decades-worth’ of overburden in stockpiles, but previously lacked the equipment to properly process it.

France: Heidelberg Materials has launched a new range of its Socli lime product that contains hemp. The product is available in two binder and two coating formulations that combine natural hydraulic lime and plant fibres. Formulated for hempcrete bio-based concrete applications, on vertical walls or for insulating intermediate floors, its high lime content increases durability, according to the producer.

Heidelberg Materials says that the Socli lime range is especially suited to the restoration of historic buildings, as it guarantees breathable walls and healthy indoor air, and prevents mould, while providing thermal and acoustic insulation. The absence of cement further increases hygrometric regulation and thermal insulation.

US: Ozinga has broken ground on a 1Mt/yr alternative cement grinding plant in East Chicago, Indiana. The plant is equipped with a Gebr. Pfeiffer MVR5300-C6 vertical roller mill. It will produce ASTM C989-compliant slag cement and other blended cements. When operational in 2026, it will be the largest of its kind in North America, and avoid 700,000t/yr of CO₂ emissions from conventional cement production. Its location offers strategic rail, road and shipping access to large markets in the US and Canada.

East Chicago Mayor Anthony Copeland welcomed an anticipated 150 new jobs resulting from construction and subsequent operations at the plant.

India: During the fourth quarter of the 2025 financial year (which ended on 31 March 2025), premium products constituted 16% of Shree Cement’s sales mix, up from 12% one year previously. During the period, the company further diversified its offering with the launch of two new premium cements, Bangur Marble Portland slag cement and Extra White Portland slag cement, in Bihar, Jharkhand and West Bengal. Both products are designed for maximum brightness and smoothness within their category of CEM-II Portland slag cements. The company says that its growing portfolio helped it to increase its full-year financial realisation per tonne by 5% year-on-year.

Business Today News has reported that managing director Neeraj Akhoury said "In the 2025 financial year, 74% of our cement output was blended, avoiding over 7.2Mt of CO₂ emissions."

Shree Cement crossed 60% consumption of energy from renewable sources in May 2025, Construction World News has reported. It has 582MW of installed renewable power capacity and is currently in the process of building a 1MW battery storage system at one of its cement plants in India.

US: Researchers at the Massachusetts Institute of Technology (MIT) have developed an AI tool to compare studies of alternative raw materials for cement production. A collaborative team from the MIT Concrete Sustainability Hub and MIT’s recycling research programme, Olivetti Group, published its findings in the Nature journal. The team mined 5.7m academic publications to identify 14,434 alternative raw materials. These belonged to 19 ‘types,’ including bottom ashes, fly ashes, calcined clays and slags, as well as less homogenous types such as biomass ashes, glasses and mine tailings. The study more than doubles the number of fly ashes and slags recorded on a database of this kind. The tool then provides a unified assessment of cementitious reactivity and pozzolanicity, also accounting for variables in particle size and amorphous content.

Australia: Boral will receive US$15.4m in government funding for a kiln feed optimisation project at its Berrima Cement Works, with CO₂ emissions expected to reduce by up to 100,000t/yr, based on predicted production rates. The Powering the Regions grant will support the producer’s installation of a new specialised grinding circuit and supporting infrastructure, which will raise the use of alternative raw materials in kiln feed to 23% from 9%, lowering the amount of limestone used.

Boral will use steel manufacturing by-products and industrial waste, including granulated blast furnace slag, steel slag, cement fibre board, fly ash and recycled fine concrete aggregates. The project will be operational in 2028.

The head of innovation and sustainability at Boral, Ali Nezhad, said “In terms of the resulting emissions intensity of the manufactured clinker, the project will result in up to 11% reduction in clinker emission intensity, 9% attributable to a reduction in calcination emissions and 2% attributable to thermal efficiency gains.”

US: Eco Material Technologies has secured a US$800m green term loan facility. The facility will mature in 2032. Eco Material Technologies will invest the funds in expansion to its supplementary cementitious materials (SCM) production capacities, to raise them to 20Mt/yr.

The company noted the oversubscription of the raise as demonstrative of high confidence in its proposition for the decarbonisation of cement and concrete.

Malaysia: Cahya Mata Cement will build a second line at its Mambong facility in Kuching to increase cement production and support Sarawak's infrastructure development. Construction is expected to take 24 months, with expected completion in March 2027.

The project will add 6000t/day of clinker capacity, raising output to 1.92Mt/yr. This will enable the company to become self-sufficient in its clinker supply and therefore eliminate the need for imports.

The company signed a technical consulting agreement with Sinoma Industry Engineering in November 2023 to design and construct the new production line. It will feature a waste heat recovery system, generating up to 6MW of power, alongside a dust filter designed to cut emissions to half of the current regulatory limit, according to the New Straits Times. The new line will also use locally-sourced alternative raw materials to reduce its reliance on fossil fuels.

Cahya Mata Cement acting division head Choong Ju Tang said "Once the project is approved and construction is completed, Cahya Mata Cement will be well-positioned to meet the construction industry's demand.”