Displaying items by tag: Sustainability
Mexico: Cemex says that it is involved in a working group “focussed on the application of FastCarb aggregates to concrete production” as part of its efforts towards net-zero CO2 concrete production. FastCarb, administrated by the US-based International Research and Exchanges Board, is a project aimed at the production of aggregates from recycled concrete containing trapped carbon dioxide (CO2) requisitioned from industrial exhaust streams.
Cemex said, “After completing the first phase of the experimental approach at the laboratory level with promising preliminary results, the project is now entering the second phase seeking to tackle the industrial approach. In this industrial approach phase, Cemex was recently assigned to evaluate the physical and mechanical properties of the carbonated recycled concrete aggregates when used in ready-mix concrete in the laboratory facilities at the Cemex France National Technical Centre.”
Huaxin Tibet plants win Green Factory certification
16 July 2020China: The Tibet Autonomous Region Department of Economics and Information has awarded Huaxin Cement subsidiary Huaxin Tibet’s Shigatse Company Tibet Company cement plants with regional Green Factory status. The plants are among eight businesses across the autonomous region selected for their dedication to green development. The company says that it attaches “great importance to the protection of plateau ecology, the scientific development of mineral resources and the promotion of mine reclamation and greening.”
The Tibet Company circulates used cooling water from cement production into irrigation systems for mine reclamation. The Shigatse Company “strengthened the greening of mines and plant areas according to local conditions, and insisted on special environmental protection training for front-line employees and middle-level leaders,” improving environmental awareness across its operations, according to Huaxin Tibet.
US: LafargeHolcim subsidiary LafargeHolcim US has adopted Environmental Product Declarations (EPD) to designate products’ Global Warming Potential (GWP) for easy consumer use, with third-party verification from ASTM International or the National Ready Mixed Concrete Association (NRMCA). Aggregates and construction materials chief executive officer (CEO) Jay Moreau said, “The growth in sustainable construction is driving demand for low-carbon building products that can transparently demonstrate a decrease in our environmental footprint. These new EPDs also push us to continue innovating as we consider the next generation of building materials.”
France: LafargeHolcim France says that it has “responded to the demand for low-carbon concretes” with the launch of a CEM-II Portland limestone cement product with 25% lower carbon dioxide (CO2) emissions than Ordinary Portland Cements (OPC) in its Galaxim Planet range. The new addition to the range, of which LafargeHolcim plans to produce 100,000t by 31 December 2020, contains 35% limestone, up by 23% from 12% in ordinary Portland limestone cement.
LafargeHolcim France south region cement sales director Olivier Mespouilles said, “Our goal is to offer all builders a cement offering properties equivalent to a conventional cement with the advantage of a reduced carbon footprint. This tour de force was successful thanks to the involvement of all our teams, and we are the first player in France to offer this type of limestone cement in such a volume." The cement is due to enter the market in the Languedoc-Roussillon region. From 2021 the company hopes to supply 80% of customers there with the low-carbon cement.
Sustainable thinking
01 July 2020HeidelbergCement released their sustainability report for 2019 this week. Every large cement producer publishes one but this one is worth checking out because of the company’s ambition to become CO2 neutral. Other companies are heading the same way but few of them have such developed and public plans.
Sustainability reports are often a hodgepodge of non-financial reporting bringing together environment, health and safety, community and other topics. Multinational companies cover a wide range of jurisdictions and combining reporting in these kinds of fields can be beneficial. Typically they are members of various bodies like the Global Reporting Initiative (GRI) or the Global Cement & Concrete Association (GCCA) that give various levels of conformity between reports. Yet, the wider focus of sustainability reports gives companies a chance to promote what they are doing well, away from balance sheets.
One highlight of HeidelbergCement’s report is its progress towards reducing its specific CO2 emissions per tonne of cement and its recognition by the Science Based Targets (SBT) initiative towards this goal. So far it has achieved a reduction of around 22% from 1990 levels to 599kg CO2/t (net) with a target of a 30% reduction or 520kg CO2/t by 2030. There is a lot more going on in the report but it’s led by the vision, ‘to offer CO2-neutral concrete by 2050 at the latest.’ It plans to achieve this by increasing the proportion of alternative CO2-neutral raw materials and fuels, developing lower clinker cement types and capturing and utilising CO2 emissions. A focus on concrete is worth noting given the pivot by building materials manufactures towards concrete in recent years.
Back in the present, HeidelbergCement is roughly in the middle of the pack of major European multinational cement producers with its specific CO2 emissions for cement in 2019. LafargeHolcim reported 561kg CO2/t and Cemex reported 622kg CO2/t. This is a bit of a moving target since corporate acquisitions and divestments can change both the starting point and the apparent current progress. HeidelbergCement’s acquisition of Italcementi in 2017 or CRH’s purchase of Ash Grove did exactly that. The other thing to consider is that these companies manufacture a lot of cement. The actual gross CO2 emissions from a multinational cement producer are immense. LafargeHolcim, one of the world’s largest multinational producers, emitted 113Mt of CO2 in 2019 from process and fuel sources whilst making cement. To put that into context, estimates for total global CO2 emissions range from 33 – 36Gt for 2019. The cement industry’s entire share was estimated by the International Energy Agency (IEA) to be 4.1Gt in 2018.
Where this sustainability report starts to become really interesting is where it talks about CO2 capture and utilisation. Its plans in this department are more mature than many of its competitors with various initiatives at different levels of development, mostly in Europe. Norcem, its Norwegian subsidiary, recently signed an agreement with Aker Solutions to order a CO2 capture, liquification and intermediate storage plant at its integrated Brevik cement plant. The deal is dependent on government support but it’s a serious proposal. As reported previously from the Innovation in Industrial Carbon Capture Conference 2020, HeidelbergCement is actively preparing to hook up with CO2 transport and storage infrastructure. The driver is CO2 pricing from initiatives like the European Union (EU) Emissions Trading Scheme (ETS). With the EU preparing for the next phase of the ETS and talk of the European Green Deal gathering pace, before the coronavirus outbreak at least, CO2 prices in Europe look set to rise. HeidelbergCement is positioning itself to benefit from being the first major cement producer to head into CO2 capture and storage/utilisation with a variety of methods intended for different CO2 prices and regional requirements.
HeidelbergCement doesn’t mention the coronavirus pandemic in its latest sustainability report. The report covers 2019 after all, before all of this happened. These reports do include health and safety information of employees, so this may be something to look out for next year. However, Cemex did mention the coronavirus in relation to its climate action plans this week. Essentially it wants to maintain its plans as a ‘fundamental component’ of its efforts to recover from the health crisis. This chimes with media talk around so-called ‘green-led’ government-backed relief programmes. Governments are the ones who are likely to be handing out the money, probably in the form of infrastructure projects. So it’s the perfect opportunity for them to encourage change from the companies bidding for this funding. Sustainability reports and the information behind them will be a useful tool in accessing this cash.
India: JSW Cement has undertaken work to improve a dried-up canal in order make it a source of water for the irrigation needs of farmers in Bilakalaguduru village, Andhra Pradesh. The Hindu newspaper has reported that the JSW Cement team has redirected overflow water from a limestone quarry. JSW Cement also built a new temple to the gods Balaji and Varahaswamy in Nandyal, Andhra Pradesh using local black limestone.
Mexico: Cemex says that the ongoing coronavirus pandemic will not delay its ‘Climate Action Strategy’ that was previously announced in February 2020. The building materials producer has developed a CO2 reduction roadmap to help guide it towards a towards a targeted 35% reduction in net specific CO2 emissions between 1990 and 2030.
The roadmap consists of: reduction of CO2 emissions of clinker through “the production of novel clinkers with lower heat consumption”; use of “alternative decarbonated raw materials”; increased alternative fuel substitution; and increased substitution of clinker with “alternative cementitious materials, using admixtures to enhance strength, and adopting new grinding technologies to improve performance”; in addition to the increased use of renewable energy.
Cemex chief executive officer (CEO) Fernando Gonzalez said, “Climate change is one of the biggest challenges of our time, and we believe that we can continue to address it as a fundamental component of our efforts to recover from the Covid-19 pandemic.”
Germany: HeidelbergCement has published its sustainability report for 2019. The building materials producer says it decreased its specific gross CO2 emissions per tonne of cement by 0.9% year-on-year to 622kg/t in 2019 from 628kg/t in 2018. Absolute net CO2 emissions also fell, by 4.6% to 68.4Mt from 71.7Mt. Indirect CO2 emission grew by 4.8% to 4.4Mt from 4.2Mt, though energy consumption in cement production fell by 3.5% to 364,000TJ from 377,000TJ.
HeidelbergCement chair Dominic von Achten said, “We have declared our express commitment to the United Nations (UN) Sustainable Development Goals. In particular, we will continue to intensify our commitment to tackling climate change in the coming years.”
Canada/US: Lehigh Cement says that it has adopted the latest North American Product Category Rules (PCR) across its entire product range.
Lehigh Hanson Canada regional cement sales and logistics vice president Shawn McMillan said, “We have made it one of our top priorities to benchmark and lower our CO2 emissions with ambitious targets. Much like food nutrition labels highlight calorific values, our plant and product-specific environmental product declarations (EPD) communicate the environmental impact through global warming potential (GWP) for cement in a simple and easy-to-understand manner. We intend to use the added product transparency to more effectively gain adoption for our lower carbon products. We have several research projects and studies on-going to continue to optimise the carbon impacts from cement and concrete.”
France: LafargeHolcim France has said that all bagged cement will now bear a 360Score CO2 emissions reduction rating, “to allow traders, artisans and homebuilders to know the precise carbon impact of their cement.” The rating, between ’A’ and ’D,’ corresponds to the factor of CO2 compared to CEM-I Ordinary Portland Cement (OPC). ’A’ Class cement produces 75% – 100% less CO2, while ’D’ class cement produces 0% – 25% less.
LafargeHolcim France chief executive officer (CEO) François Petry said, “By applying the 360Score rating scale to our bags of cements, we are continuing to implement our Lafarge 360 approach, which consists in supporting all builders to build in a more responsible manner.”