Displaying items by tag: Recycling
UK: Tarmac has supplied its Toptint Glow glow-in-the-dark concrete for a major mixed-use commercial development called The Glass Yard in Chesterfield, Derbyshire. Construction company Blue Deer used Toptint Glow in the main walkways and first-floor balconies of the office, restaurant and retail complex. France-based Chryso supplied its Lumintech glow-in-the-dark chippings for use in the concrete. The supplier said that the chippings are fully recycled. They are available in white, stone, light grey, agate and jade to match the colour of the concrete mix. Each has a corresponding glow colour of blue, green turquoise or blue turquoise. Tarmac says that glow-in-the-dark concrete helps to enhance the nighttime built environment.
Product development manager Glanville Norman said “Tarmac is always looking to develop new and exciting materials that can complement bold design. This is the first time that Toptint Glow has been used on a major commercial development and we were delighted to be able to propose a solution that not only has high aesthetic and environmental quality but also helped to improve safety and visibility.”
Grupo Argos named in Dow Jones Sustainability Index
15 November 2021Colombia: Dow Jones has named Grupo Argos in its Sustainability Index 2021, the company’s ninth time appearing in the ranking. It achieved its highest ratings in materiality, risk management, environmental reporting, climate change strategy, social reporting and human rights. The group said that the listing constitutes its recognition as the most sustainable cement company in the world. Its sustainable initiatives include offering collection of its used cement bags, supplying all the electricity for its Colombian operations from renewable sources and currently having three credit facilities linked to environmental, social and governance indicators.
Legal and sustainability vice-president Maria Isabel Echeverri said “At Argos, we are greatly satisfied with this result which places us as a world benchmark in sustainability and reassures our commitment to closing gaps and implementing best practices in social, environmental, financial and corporate governance matters. This drives us to continue moving forward in creating social value to build the dreams of housing and infrastructure for millions of people.”
Charah Solutions wins ash and boiler slag handling contract with Associated Electric Cooperative
04 November 2021US: Charah Solutions has signed a contract with Associated Electric Cooperative (AECI) to receive bottom ash, fly ash and boiler slag from its Thomas Hill Energy Center coal-fired power plant in Missouri until 2026. Charah Solutions will recycle the by-products to produce supplementary cementitious products and redistribute these through its MultiSource materials network. The network consists of 40 locations across the US.
President and CEO Scott Sewell said "We are delighted to partner with AECI to manage their ash marketing needs at Thomas Hill while supplying our concrete producers with the high-quality material they need."
Murdoch University team develops Colliecrete fly ash-based concrete
20 September 2021Australia: Researchers from Murdoch University in Western Australia have developed a cement-free concrete called Colliecrete. ABC News has reported that the concrete comprises of 80 – 90% fly ash. Other ingredients are bauxite residue and recycled aggregates. Developer Ramon Skane said that customers can make Colliecrete ‘anywhere, at room temperature.’
Cemex Zement launches Insularis insulating cement-free concretes
17 September 2021Germany: Cemex Zement has launched Insularis cement-free concretes, a product range suitable for use in building insulating components. The range includes lightweight concretes Insularis Supra and Insularis Infra. Due to its low bulk density, Insularis Infra currently requires special case-by-case or project-related approval for use in Germany. The company said that it produces Insularis concretes from a mix of recycled and natural raw materials. It added that Insularis is itself 100% recyclable.
Cemex UK relaunches pallet recovery service
09 September 2021UK: Cemex UK has relaunched its used pallet collection service. The scheme aims to reduce timber waste in its supply chain, according to the company. It forms part of its Future in Action – Committed to Net Zero CO2 climate action strategy. Its partner ELM will collect stockists’ pallets free of charge for refurbishment and return to Cemex UK. It will reuse all repaired pallets and recycle those damaged beyond repair.
Packed cement sales manager Graeme Barton said “We want to make life easier for our merchants to work with us to reduce waste. We’d like to make pallet recovery part of the standard delivery process, as many pallets still end up in landfill. It is increasingly costly to dispose of pallet waste and there is far greater value to be gained by recycling and reuse. Rising timber costs, combined with pallet shortages, means there is a heightened need to conserve and maintain pallets throughout the supply chain. Recovery is considerably more cost effective than buying new replacements.” He added “Pallets are a standard format in transporting building products and contribute a significant financial and environmental cost which needs to be captured by the user. We saw a similar situation with supermarkets and plastic bags, but we’d rather not wait for legislation to enforce this; we’d really like to make a difference now with preventative action. The pallet recovery service is regenerative by design and aims to support the key principals of the circular economy to benefit business, society and the environment. If we all pull together it will have a significant impact across the whole supply chain.”
Holcim Deutschland joins Madaster
17 August 2021Germany: Holcim Deutschland says it has joined Madaster, an online registry for materials and products. Under the scheme, buildings are registered, including the materials and products that were used in their construction. This is intended to make the reuse or recycling of the materials easier, to encourage ‘smart’ design and to eliminate waste. Thorsten Hahn, the chief executive officer of Holcim Deutschland said “The use of alternative raw materials and the closing of product cycles are among the greatest challenges in the construction industry. We owe it to future generations to use the resources that are available to us responsibly and sensibly.”
Low carbon cements go global
28 July 2021Holcim has started to unify its low carbon cement product range this week with the launch of its ECOPlanet label globally. The products are already available in Germany, Romania, Canada, Switzerland, Spain, France and Italy. The plan is to extend this to 15 countries by the end of 2021 and then to double its ‘market presence’ by the end of 2022.
The headline news is that the range will include what Holcim says is the world’s first cement product with 20% recycled construction and demolition waste. This appears to be an improvement on the group’s Susteno cement products that use fine fractions from concrete and demolition waste. This product is currently sold in Switzerland where it is advertised as saving 10% of CO2 emissions compared to a standard cement product. Both Holcim and HeidelbergCement already sell concrete products that use the coarse waste from building demolition. Other than this, Holcim says that the range will also include cements that contain calcined clay. In June 2021 subsidiary Lafarge France announced that it would produce a cement product under the ECOPlanet banner using kaolin clay with its proprietary ProximA Tech process at its integrated La Malle cement plant in Bouc-Bel-Air.
We will have to wait and see how far Holcim goes in standardisng the range between different countries. Yet, judging from what the countries that are already selling ECOPlanet are doing, it looks like it will be a variety of blended cements. At present, for example, Holcim Germany offers four products in the ECOPlanet range. These are all slag cements, with three having effective CO2 reductions of up to 70% and the fourth, ECOPlanet Zero, reaching 100% through a carbon offsetting scheme in conjunction with MoorFutures. Holcim Italy also launched a product in the range called ECOPlanet Prime using calcined clay in June 2021.
Incidentally, LafargeHolcim US announced a research project this week with the US Army about using demolition waste. It’s going to start working with the US Army Corps of Engineers’ Engineer Research and Development Center and Geocycle to look at how construction and demolition materials from military installations can be used for energy recovery and mineral recycling. Group resources at Geocycle’s Holly Hill Research Center in South Carolina, US and Holcim’s Global Innovation Center in Lyon, France will be used in the scheme.
Other low carbon cement products are available of course. Holcim is far from alone in launching low CO2 cement and concrete products. Yet the use of worldwide brand names is different. Cemex is doing something similar with the global rollout of its Vertua concrete products. It first launched Vertua in France in 2018 before going global in 2020. Holcim started to launch ECOPact Concrete in 2019. Now, Holcim has gone further by doing the same thing with cement. Given how localised cement and concrete products are, it will be instructive to see how global branding for low carbon cementitious products helps these companies. For instance, who is the target audience? It could be eco-minded self-build customers or project specifiers or government departments or industry lobbyists. Or perhaps it is simply another marketing channel to reinforce the sector’s sustainable offerings.
The other point worth considering is when will the multinational cement producers start selling sustainable cements and concretes in less rich parts of the world? While Holcim was playing with blended cements and marketing this week, Dangote Cement said that it was ready to start commissioning its new 6Mt/yr integrated plant at Okpella, Edo State in Nigeria. Another 5Mt/yr plant is also on the way in the country from Madugu Cement. It has just signed a contract for China-based Sinoma International Engineering Company to build it. When Holcim and the other cement companies start selling low carbon cements in places like Nigeria then the rise of these products will be complete.
Atotonilco de Tula municipal government supports Cemex’s Ecomunidad recycling initiative
11 June 2021Mexico: The municipal administration of Atotonilco de Tula, Hidalgo province, has given US$3050 to Cemex to help with the running of its Ecomunidad recycling initiative. In June 2021, the initiative involves recycling collection at 11 Cemex sites and has educated 11,000 people. Since its foundation at 20 local schools in 2019, the initiative has recycled 37t of plastic waste.
Sika develops CO2-binding concrete recycling process
11 March 2021Switzerland: Sika has developed ReCO2ver, a process which produces limestone, sand and gravel from the combination of concrete and CO2 with an additive developed by the supplier. The process enables demolition companies to completely recycle used concrete, while storing captured CO2 at a rate of 60kg/t of crushed concrete. The materials produced can be used as aggregates to make concrete of comparable strength to an all-new product.
Chief executive officer Paul Schuler said, "The five largest European Union countries alone generate roughly 300Mt/yr of old concrete. With complete recycling of these materials, up to 15Mt/yr of CO2 emissions can be stored. We are convinced that our new process has the potential to benefit both our customers and the environment."