Displaying items by tag: Sustainability

US: The Portland Cement Association has announced the winners of the Energy Environment Awards 2020. Cementos Argos’ 1.1Mt/yr Harleyville, South Carolina cement plant won the Energy Efficiency Award “by reducing kiln specific heat consumption and increasing the utilisation of the new vertical cement mill,” while CRH subsidiary Ash Grove Cement’s 1.0Mt/yr Midlothian cement plant won the Environmental Performance Award for “operating a whole-tyre burning system utilising a first-in-the-US hot disk system supplied with whole tyres from a nearby tyre recycling company.” Other winners were GCC’s 0.9Mt/yr Odessa, Texas cement plant for Innovation, LafargeHolcim’s 2.2Mt/yr Holly Hill, South Carolina plant for Land Stewardship, Titan Cement's Roanoke Cement Troutville plant for Outreach and HeidelbergCement subsidiary Lehigh Hanson’s 3.2Mt/yr Union Bridge, Maryland plant for Overall Environmental Excellence.

PCA president and chief executive officer (CEO) Michael Ireland said, “America’s cement manufacturers continue to focus on researching and developing new and innovative ways to reduce environmental footprint. The companies receiving these awards are great examples of our industry’s commitment to sustainability and energy efficiency.”

US: Solidia Technologies and France-based Chryso have announced a collaborative partnership for the further development of the Solidia ‘ultra-low’ CO₂ concrete product. The companies plan to use their “combined expertise to improve the sustainability performance and material properties” of the concrete.

“Incorporating Chryso’s exclusive water-reducing admixtures adapted to the specific chemistry of Solidia Concrete, will further reduce water consumption in the curing process,” said Tom Schuler, president and chief executive officer (CEO) of Solidia Technologies.

UK: Cemex UK says that construction company Kier used concretes from its reduced-carbon dioxide (CO₂) Vertua range to complete a net-zero CO₂ residential construction project at the University Warwick. Sales executive Matthew Doran said that the student accommodation, called Cryfield, “was the first project for which Kier has chosen to use the Vertua range and it was an exciting opportunity for Cemex to demonstrate the value of this product as both a high-performance and sustainable choice.”

The Bureau of Indian Standards (BIS) has warned local cement producers to rein in their more outlandish claims. In a letter reported upon by the Economic Times newspaper this week, the government department has accused some manufacturers of making both objective and subjective claims about their products that strained credulity and didn’t fit the corresponding official standards. One industry source from the newspaper blamed the crackdown on some producers claiming that their cement products helped protect people from Covid-19! In their view the bureau was now over-enforcing its rules in retaliation. Given the severity of the outbreak in India - it has the second highest number of reported cases in the world this week - the response of the authorities is understandable to say the least.

The distinction between objective and subjective exaggeration that the BIS makes it worth looking at in more detail. For example, objective or supposedly fact-based claims the BIS cited included: ‘Protect Steel in Concrete’; ‘Protect Concrete from Corrosion’; ‘Corrosion Resistant’; ‘Weather Proof’; and ‘Damp Proof.’ Then, there were subjective, or more emotionally evocative, claims along the lines of ‘strong’ or ‘high performance.’ The BIS then outlines the specific ways in which objective and subjective assertions can be used. Objective claims should be avoided on marketing and packaging material. Subjective claims should, “explicitly indicate that such claims are not covered under the scope of BIS licence granted to them and the responsibility of such claims lies with them.”

Marketing is a big part of standing out in the crowded Indian cement market with producers sponsoring major sports teams. This might seem odd to readers elsewhere in the world but it demonstrates the target market, the importance of cement as a commodity to the general public and the power of brand awareness. Amubja Cement’s logo of a man with a Charles Atlas style physique cuddling a building sums up the message they want to convey: strength. No wonder producers are wary of the BIS wading in.

Standards also appeared in another news story this week with the announcement that Taiwan Cement Corporation (TCC) had obtained the first cement product carbon footprint label issued by the Environmental Protection Administration (EPA) in the country. Its products will be marked with carbon footprint labels from the fourth quarter of 2020.

This shows a general trend in cement products towards showing sustainability credentials from putting environmental footprint data in front of specifiers for large projects towards making it a more basic retail selling point. Lots of other cement producers around the world have done and/or are doing similar things, from the dedicated slag cement manufacturers to the larger producers routinely releasing and promoting new low-CO₂ products. To pick one example from many, in July 2020 LafargeHolcim France introduced ‘360Score CO₂ emissions reduction ratings’ to its bagged cement range. The score, between ’A’ and ’D,’ corresponds to the factor of CO₂ compared to CEM-I Ordinary Portland Cement (OPC), with ‘A’ products producing less CO₂ than ‘D’ products in their overall creation.

To look at an older example of the need for standards generally, building collapses in Nigeria appeared to increase post-2000, with the misuse of lower-grade cements blamed for the situation. The Standards Organisation of Nigeria (SON) took action in 2014, local producers introduced higher strength cements and the problem was reduced. Given the intangible nature of measuring sustainability in cement products there is a need for reliable standards. Unlike performance metrics, such as a strength or durability, the CO₂ footprint of a cement product will generally remain utterly intangible for most end-users. The effects of CO₂ emissions are continually analysed and debated, but the negative climate effects of cement products are more akin to someone else’s house flooding on the other side of the world 50 years later, than one’s own house falling down a decade later due to using the wrong strength cement. So, some form of trustworthy enforcement for sustainability standards is crucial. Standards may represent ‘boring’ bureaucratic red tape at its most officious but we need them. In India and elsewhere though, the debate on enforcement continues.

Taiwan: Taiwan Cement has been awarded the first product carbon footprint label by the local Environmental Protection Administration (EPA). It follows its completion of the structure of product category rules (PCR) in early August 2020 and inspection by the EPA. TCC's products will be marked with carbon footprint labels from the fourth quarter of 2020. The Taiwan-based cement producer has also announced support for the Global Cement and Concrete Association’s (GCCA) 2050 Climate Ambition plan.

TCC started its Science-Based Target project in 2019 and says it became the first cement company in the Greater China region to complete target setting and was approved by Science-Based Target initiatives (SBTi) in June 2020. Following the science-based methods promoted by the Intergovernmental Panel on Climate Change (IPCC) from the United Nations, TCC set a target to reduce carbon emissions by 11% in 2025, using 2016 emissions as the base. TCC completed carbon footprint certification for the most popular cement products, Portland Type I cement and Ready-Mixed Concrete 3000psi, in July 2020.

Europe: Cembureau, the European Cement Association, has announced that its ‘Cementing Europe’s Future: Building the Green Deal’ webinar will take place on 13 October 2020. The programme includes keynote speeches from association president Raoul de Parisot and German Minister of Environment, Nature Conservation and Nuclear Safety Jochen Flasbarth. Additionally, members of the European Parliament and representatives of the European Commission, LafargeHolcim, HeidelbergCement and several other companies involved in the European cement industry will speak.

It’s back to work for many in Europe this week following the summer break and so too for the Global Cement and Concrete Association (GCCA) with the release of its 2050 Climate Ambition mission statement. Talk about setting the bar high for the rest of us struggling to remember how to log into our computers! The short version is that the association aspires to deliver society with carbon neutral concrete by 2050. The actual detail will be published in the second half of 2021.

What it does say is that, “detailed actions and milestones” will be set out in the forthcoming roadmap. This will include, “working across the built environment value chain to deliver the vision of carbon neutral concrete in a circular economy, whole life context.” This focus on concrete and end-product life-cycles looks likely to be the wriggle room cement and building materials producers need to actually meet the goal. To put it another way, as the press release helpfully reminds us, things that people need are made out of concrete. So, until a viable alternative to clinker turns up, the cost in CO₂ emissions needs to be spread as far and wide as possible. At the same time everyone needs to be continually told how much they need cementitious products: don’t think of the CO₂ released to build your new house. Rather: think of the CO₂ saved annually by living in a well-constructed dwelling, as opposed to the alternatives, and consider what happens to the concrete once the structure is demolished.

A few ideas of what strategies the roadmap may use to reach its target are revealed. This is fairly standard current thinking including: cutting direct energy-related emissions; increasing co-processing; increased renewable electricity usage; reducing process emissions through new technologies and deployment of carbon capture at scale; reducing the content of both clinker in cement and cement in concrete; more efficient use of concrete in construction; reprocessing concrete from construction and demolition waste to produce recycled aggregates; and quantifying and enhancing the level of CO₂ uptake of concrete through recarbonation in a circular economy, whole life context.

It’s early days yet, with the roadmap not due for at least a year, but deploying carbon capture methods at scale will be expensive and difficult. Whatever target the GCCA sets here will be keenly observed, especially so given that the association is a global concern. So far carbon capture in the cement industry has generally been linked to regions with market or legislative encouragement. How, for example, would a producer in a country with low environmental restrictions react to its peers trying to get it to make cement production more expensive? The rest of the points seems more tangible at the moment but will require lots of work to realise. They are also interlinked and this reinforces the need for someone to continually remind society about the life cycle of concrete. Taking concrete recycling into the mainstream is great but the world has to be told that it is happening.

This last point brings us to the perceived success of the GCCA’s ambitions: will a successfully realised strategy to make carbon neutral concrete by 2050 be enough to make environmental activists like Greta Thunberg happy? Probably not. Pure environmentalists seem unlikely to accept whole lifecycle thinking while limestone decomposition in kilns continues without capture or cessation. Even if the cement and concrete industries hit the target they will have to shake off the taint that the achievement was at least partly down to sneaky carbon accounting. Suddenly saying that concrete buildings have been sucking up CO₂ all along and that the industry is now, say, 20% closer to its carbon neutral target may feel like cheating to some observers. Step forward a global association to say otherwise. The need for industry associations making the case for the sector’s aspirations seems more essential than ever.

UK: The Global Cement and Concrete Association (GCCA) has published its 2050 Climate Ambition, a joint industry commitment to net-zero carbon dioxide (CO₂) emissions by 2050. The association’s 40 members have committed to, “eliminating direct energy-related emissions and maximizing the co-processing of waste from other industries, reducing and eliminating indirect energy emissions through renewable electricity sources, reducing process emissions through new technologies and deployment of carbon capture at scale, reducing the content of both clinker in cement and cement in concrete, as well as more efficient use of concrete in buildings and infrastructure, reprocessing concrete from construction and demolition waste to produce recycled aggregates to be used in concrete manufacturing and quantifying and enhancing the level of CO₂ uptake of concrete through re-carbonation and enhanced re-carbonation in a circular economy, whole-life context.”

President Albert Manifold said, “The 2050 Climate Ambition represents our industry’s commitment to further reducing emissions and ensuring that the vital product we provide can be delivered on a carbon-neutral basis by 2050. There is a significant challenge involved in doing so and achieving alignment across our industry on a sustainable way forward is an important first step. We cannot however succeed alone and in launching our ambition statement we are also highlighting the need for our industry to work collaboratively with other stakeholders in support of our ambition for a more sustainable future.”

India: Sustainable roofing specialist Visaka Industries has acquired a 20-year patent for production of ATUM, a roofing system consisting of cement boards with integrated solar panels. The company says that the product, which has been in development since 2016, is both insulative and capable of generating up to 28W/m2 of power.

Honduras: Cementos Argos subsidiary Argos Honduras has announced the launch of ECO Multipurpose, a 40% reduced-CO₂ general use cement produced with energy from the company’s 8.5MW solar power plant at its 1.0Mt/yr integrated Piedras Azules cement plant in Comayagua, Comayagua Department. The product is “the first environmentally-friendly cement in Honduras,” according to the cement producer.

General director Gustavo Uribe said, “With this project we are leading the industry in the country and sowing the seeds of the future for construction in Honduras, which will gradually evolve towards the adoption of the global trend of sustainable construction. At Argos, we continually work on creating products and developing projects with a positive impact on the environment and society. As a company, we assume a commitment to the Sustainable Development Goals, prioritising climate change especially, and this product brings us closer to fulfilling that commitment.”