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Displaying items by tag: construction and demolition materials
India: Antony Waste Handling Cell Limited (AWHCL) has won a US$124m contract for construction and demolition waste management services in Mumbai. Press Trust of India News has reported that the contract covers nine municipal subdivisions of the city and will last until 2044. AWHCL said that the contract will enable it to develop the circularity of cement and concrete within the local economy. It expects to commission 600t/day-worth of waste processing capacity by March 2023. The waste management company expects a recovery rate of 25% recyclable materials.
AWHCL chairman and managing director Jose Jacob said "This sub-segment of solid waste management provides tremendous growth opportunities given the number of infrastructure development projects underway, and the government's push to accelerate the economic growth with infrastructure being one of the important growth pillars."
Update on construction and demolition waste, February 2023
01 February 2023Cemex launched a new waste management division called Regenera this week. Cemex describes Regenera as a “business that provides circularity solutions, including reception, management, recycling, and coprocessing of waste.” The Mexico-based company has a long and leading history with sourcing and using alternative fuels in the cement sector and the new organisation looks set to utilise this experience. What is notable though is how the business is targeting three waste streams: municipal and industrial; industrial by-products; and construction, demolition and excavation waste (CDEW). Bringing the three waste streams together in this way appears to be novel for the heavy building materials sector, particularly the inclusion of CDEW, which we will explore further here.
CDEW is split into fractions, just like the municipal and solid waste streams that end up as alternative fuels at cement plants, but the biggest fractions are generally concrete, followed by bricks. The recycled concrete is then typically used as an aggregate, either in new concrete production or in areas like road construction and earthworks. The use of recycled aggregates (RA) made from CDEW goes back to at least the 1930s in its current form although ‘reusing’ materials from structures such as castles and churches goes back far further. Recycling and reusing CDEW gained a boost in 2020 when the European Union (EU) set a 70% recovery target. However, within the EU the CDEW recycling rates vary considerably and that 2020 target includes the use of CDEW in backfill applications.
In its launch statement for Regenera, Cemex noted that it operates a dock in Paris, where it receives a variety of materials, including construction debris, excavated material and inert soil. These materials are sorted, processed and then transformed into recycled aggregates or organic material used to restore quarries. Cemex then promptly followed up the official launch of Regenera on 30 January 2023 with the acquisition of a majority stake in Shtang Recycle, an Israel-based CDEW recycling company. It added that Shtang Recycle is preparing to build a recycling plant with a production capacity of 0.6Mt/yr of CDEW waste materials. The output from the plant will be used as raw materials for aggregate production.
The focus on CDEW recycling was flagged up at Cemex’s investor event in November 2022. It said that it was targeting a recycling rate of 14Mt/yr of construction and demolition waste by 2030. Other managed waste stream goals included doubling the amount of municipal and industrial waste it manages, to achieve a 50% to fossil fuel substitution rate, and increasing its usage of alternative raw materials and by-products by 30%, thereby eliminating 13Mt/yr of extracted materials.
Cemex is not alone in targeting the CDEW waste sector. Holcim’s recent work in the area goes back to at least 2016 when a recycling unit near its Retznei cement plant in Austria started processing 130,000t/yr of CDEW. It announced in December 2022 that it was setting up a similar recycling centre, also in Austria, at its Mannersdorf cement plant. In October 2022 Holcim acquired Wiltshire Heavy Building Materials in the UK. This company recycles 150,000t/yr of construction and demolition waste into aggregates and concrete. Holcim linked the acquisition to its Strategy 25 target of recycling 10Mt/yr of construction and demolition waste by 2025.
Activity by other cement companies includes the commissioning of a construction waste recycling plant at Gennevilliers in France by CRH-subsidiary Eqiom in April 2022. It was aiming for a target of 50,000t in 2022. In November 2022 Heidelberg Materials agreed to acquire RWG Holding based in Berlin, Germany. Then, in December 2022, it announced a deal to buy Mick George Group in the UK. Both proposed acquisitions are subject to competition authority approval. Heidelberg Materials’ current target is to offer circular alternatives for half of its concrete products by 2030.
The moves by the bigger cement companies into the CDEW sector follow sustainable thinking and the waste hierarchy. Yet the big prize here is to gain a route to dispose of some of their CO2 emissions through recarbonation and this has been flagged up in several net-zero roadmaps for the cement sector such as those by Cembureau and the Global Cement and Concrete Association (GCCA). Holcim has been involved in the FastCarb project in France, running a pilot at its Val d’Azergues cement plant in 2021. Heidelberg Materials has been testing its own process with so-called recycled concrete paste. The development now appears to be that utilising CDEW has entered the sustainability strategies for some of the big cement-concrete-aggregate producers, targets have been set and acquisitions are happening.
For more information on Heidelberg Materials research into concrete recycling read the January 2023 issue of Global Cement Magazine
Lafarge Zement to establish Recycling Centre Mannersdorf
14 December 2022Austria: Lafarge Zement plans to invest Euro8m in the establishment of the Recycling Centre Mannersdorf at its 1.2Mt/yr Mannersdorf cement plant in Lower Austria. Niederösterreichische Nachrichten News has reported that the facility will process demolition waste into alternative raw materials for use in the cement producer’s operations.
Plant manager Helmut Reiterer said “The Recycling Centre Mannersdorf is of great importance for the construction industry. It enables people to build in a much more environmentally friendly way, increases the recycling rate and strengthens the domestic circular economy.”
Holcim acquires Teko Mining Serbia
12 July 2022Serbia: Holcim has acquired aggregates producer Teko Mining Serbia. Teko Mining Serbia’s aggregates sales were 2.4Mt in 2021. It employs 150 people across its quarries in Batocina, Ceramide, Ladne Vode and Ljubovija.
Holcim’s Europe, Middle East and Africa regional head Miljan Gutovic said “Teko complements our existing cement and concrete operations perfectly, allowing us to add aggregates and asphalt as part of our integrated offer in this highly dynamic market. I look forward to welcoming the employees of Teko Mining, whose expertise will be invaluable in accelerating our growth, especially in the highly dynamic Serbian market, and will enable us to develop circular solutions to recycle construction and demolition waste in the future.”
Switzerland: Holcim recorded net sales of US$6.75bn in the first quarter of 2022, up by 20% year-on-year from US$5.62bn in the first quarter of 2021. The group’s recurring earnings before interest, taxation, depreciation and amortisation (EBIT) rose by 16% to US$643m from US$553m. The company has upgraded its outlook 2022 to a forecast of full-year net sales growth of at least 10%.
CEO Jan Jenisch said “I am very encouraged by the record start of the year, setting a solid foundation to our Strategy 2025 – Accelerating Green Growth.”
The first quarter of 2022 brought four new bolt-on acquisitions in addition to the group’s conclusion of its US$1.35bn Malarkey Roofing Products acquisition. The company says that it remains actively engaged in supporting humanitarian efforts in Ukraine.
Holcim has also published its industry-first Climate Report 2022. The report details the company’s progress towards achieving its sustainability targets under the four pillars of its Strategy 2025 – Accelerating Green Growth. Under the Accelerating Growth pillar, Holcim reached a total of 15 markets with its ECOPlanet reduced-CO2 cement range. Under Expanding Solutions & Products, it reduced the proportion of cement sales in its consolidated sales to 57% in 2021 from 60% in 2020. Its other pillars are Leading in Innovation and Sustainability and Delivering Superior Performance. In 2021, the company used 6.6Mt of recycled construction and demolition waste in its products, against a 2050 target of 10Mt.
Chief sustainability and innovation officer Magali Anderson said “On our net-zero journey, we are walking the talk at Holcim, taking clear science-driven action to win the race for climate.”
France: CRH subsidiary Eqiom has successfully commissioned its Gennevilliers construction waste recycling pilot plant. Prior to the plant’s opening, Eqiom recycled 10,000t of construction waste in the first quarter of 2022. It is now aiming to recycle 50,000t in 2022.
The company says that its continual efforts are making the circular economy possible in the construction sector.