Displaying items by tag: concrete

Qatar: The Ministry of Environment and Climate Change has organised a symposium to launch a new ‘green’ cement made from sewage waste, with aims to support environmental sustainability and the circular economy in line with the Qatar National Vision 2030. The symposium highlighted the role of scientific research in transforming sewage into green cement. The cement is produced by treating sludge, resulting from solid sewage waste by burning, grinding and mixing it with catalysts, then is practically applied in the manufacture of building blocks and foam concrete. The amount of accumulated sewage waste is estimated at about 40,000t/yr, which can be used to produce 40 million bricks or 150,000m³/yr of foam concrete.

New Zealand: Fletcher Building has appointed Thornton Williams as CEO of its Concrete division. Williams has served as acting CEO of the division since 29 March 2024. The group noted Williams’ ‘significant’ leadership role in driving culture, customer satisfaction and sustainability. He has also been its chief financial officer (CFO) from 2021, before which he was group general manager, treasury and risk. He previously worked in dealer roles at Australia-based banking group ANZ and the Bank of New Zealand. Williams holds a Bachelor of Commerce degree from the University of Auckland, New Zealand.

Incoming group CEO and managing director Andrew Reding said "Thornton brings to the role a deep understanding of the commercial drivers of the Concrete business and the competitive landscape. He is therefore well-positioned to lead this high-performing division, not only as Fletcher Building navigates the current challenging trading conditions but also as economic conditions start to improve and opportunities for profitable and sustainable growth emerge.” Reding added “I look forward to working closely with Thornton and the Fletcher Building executive team when I formally commence my role on 30 September 2024. I would also like to take the opportunity to thank acting CEO Nick Traber for his support and commitment in enabling an orderly and smooth handover of the CEO role.”

US: Gabriel Carrero has taken on the role of Chief Commercial Officer (COO) at Carbon Limit, developer of the CO₂-sequestering concrete additive CaptureCrete. Carrero previously served as Senior Vice President, Sales & Marketing at fellow additive developer CarbonCure, and has held directorial roles in multiple companies in the cement and concrete chemicals innovation space, including working as COO of Sysdyne Technologies and NITROcrete and as Global Director, Specialty Construction Chemicals at GCP Applied Technologies. Carrero holds a Mechanical Engineering degree from the Centre Technological University (UNITEC) and an MBA from the University of Carabobo, both in Venezuela.

New Zealand: Neocrete has entered a partnership with major cement manufacturers, including Cemex, Heidelberg Materials, CRH, Titan, Cementos Argos and Ultratech Cement to promote its new Activator product aimed at reducing the amount of cement required in concrete. The product uses volcanic ash or residual ash from industrial processes to cut the amount of cement required by 40% to 50%, according to the company. Neocrete aims to replace cement completely, resulting in carbon-free concrete, by 2027. The new product will be submitted for life cycle assessment once a new pilot plant in Mt Wellington is operational. The plant is valued at US$2m and will produce 0.12Mt/yr of cement, to meet 10% of New Zealand’s demand.

Co-founder Zarina Bazoeva said "We don't need to produce the whole volume of cement. We activate the concrete chemically with a small catalyst at 3kg compared to 100kg of cement. So, we can scale fast."

Switzerland: Holcim has entered a partnership with Kibag and Oxara for the production and distribution of Oxacrete Oulesse, a cement-free binder developed by Oxara. This new product reportedly aims to supply up to 10% of Switzerland's annual concrete market. Oxacrete Oulesse is made with materials from deconstruction, offering a low-carbon alternative to traditional cement.

Peru: Switzerland-based Holcim has acquired ready-mix concrete producer Mixercon and industrial minerals producer Comacsa for US$100m. Comacsa owns a white cement plant in Lima. Noticias Financieras News has reported that the acquisitions mark Holcim’s entry into Peru, strengthening its hold in the South and Central American market.

Regional head Oliver Osswald said "The incorporation of Comacsa and Mixercon will allow us to generate synergies and develop export markets.”

UK: UK-based startup Cocoon has raised €4.9m in pre-seed funding to develop technology that repurposes byproducts from electrified steel furnaces into a ‘near-identical replacement’ for blast furnace slag, according to the company. The modular technology integrates into existing steel-making processes without disrupting operations or requiring high capital expenditure, reports UK Tech News. Cocoon targets a 50% replacement of cement in concrete, aiming to reduce emissions for producers. Initial tests are underway at a steel plant in northern England, followed by another in the US.

Cocoon CEO Eliot Brooks said "We’re turning a byproduct with little use into a valuable product that the market badly needs and can be easily integrated into existing supply chains. By repairing a broken link in the circular economy, Cocoon provides steel makers with a new revenue stream while meeting the low-carbon material needs of the concrete industry. For every 1t of Cocoon’s slag-based cementitious material used, 1t of CO₂ can be avoided."

Brooks hopes Cocoon's climate technology will be integrated into a pilot plant by late 2025.

Heidelberg Materials inaugurated a plant near Katowice in Poland this week for separating and sorting demolition concrete. This gives us the chance to catch up with the state of construction and demolition waste (CDW) for the cement and concrete sectors and consider the differences between the strategies of the multinational heavy building materials companies in Europe and the US.

The new CDW recycling unit has a capacity of up to 100t/hr. Heidelberg Materials says that it is the “first company in the industry to introduce high-quality, selective concrete separation at this scale.” The company is using its proprietary ReConcrete process to sort out fractions from the CDW including sand, gravel and, finest of all, recycled concrete paste (RCP). That last one is particularly valuable because it can either be used as an alternative raw material for clinker production by replacing limestone or as a secondary cementitious material. Heidelberg Materials is also promoting the potential use of RCP as a carbon sink over the lifetime of a concrete structure via ‘enforced carbonation.’ The RCP is exposed to raw exhaust gases from cement production allowing it to both mineralise CO₂ and act as a clinker substitute. To further explore this option Heidelberg Materials is building an industrial pilot at its Górażdże plant to test the concept with construction expected by the end of 2024.

Both Holcim and Heidelberg Materials have been visibly busy buying up more aggregate recycling companies over the last nine months since Global Cement Weekly last reported on CDW. Holcim acquired Germany-based Mendiger Basalt in January 2024, Switzerland-based Cand-Landi Group and UK-based Land Recovery in June 2024, and Belgium-based Mark Desmedt in July 2024. It also said at the start of the year that it aimed to conclude 15 - 20 new acquisitions in 2024 with a focus on CDW companies in Belgium, France, Germany and the UK. Heidelberg Materials bought UK-based B&A Group in May 2024 and US-based Highway Materials and Aaron Materials in July 2024. Holcim has set itself a target of recycling 12Mt/yr of CDW by 2030 by using its ECOCycle technology. It reported 8.4Mt/yr in 2023 and hopes to reach 10Mt/yr in 2024.

Some of the recycling companies mentioned above are based in the US but the pace of CDW acquisitions have generally been faster in Europe. In the US, meanwhile, the heavy building materials producers have tended to buy more general aggregates companies. Heidelberg Materials announced on 30 July 2024 that it was buying Albany-based Carver Sand & Gravel. This followed the companies mentioned above and Texas-based Victory Rock, also in July 2024. Holcim said in its first half-year results for 2024 that it had ‘executed’ a bolt-on acquisition in the US that would strengthen its aggregate and ready-mixed concrete business. Cemex also revealed a joint-venture agreement with sand and gravel supplier Couch Aggregates and marine bulk product distributor Premier Holdings in July 2024. It said that the move was part of its “ongoing strategy to accelerate growth in the US and expand its aggregates business.” A big recent deal in the sector was the merger of the US-based operations of Summit Materials and Cementos Argos that completed in January 2024. Although at the time we concentrated on the cement-side of the transaction, it also gave the organisation just under 5Bnt of aggregate reserves.

It may be a stretch to call what’s going on here a trend. Yet the large heavy building materials companies do appear to be acting differently in the US and Europe with regards to aggregate companies and CDW recyclers. The main drivers here are the strength of the US market and the stricter environmental legislation in Europe. Higher population density in Europe compared to the US may also be playing a part in the differences in speed of adoption between the two markets. The ongoing Holcim spinoff demonstrates the differences between the two market regions in bold terms. In short, the company has decided to split itself in two in order to meet the different needs of each market. As for CDW, the trickle of acquisitions keep coming and momentum is steadily building.

Singapore: Malaysia-based YTL Corporation has concluded a conditional sale and purchase agreement for an 81% stake in NSL for US$169m. YTL Cement will launch a mandatory unconditional cash offer for all outstanding shares in NSL after completing the acquisition. NSL manufactures precast concrete components and operates an environmental services division.

UK: The Materials Processing Institute has launched the next phase of the EconoMISER programme with a €5m investment to develop sustainable technologies. The institute aims to advance research in alloy development, furnace modelling and decarbonisation of cement and concrete.

The institute will establish a new cement and concrete research centre and invest in technologies such as predictive artificial intelligence for alloy development. This initiative is part of the UK's effort to decarbonise critical sectors like cement through the EconoMISER programme, supported by UK Research and Innovation.