Displaying items by tag: Cemex

Andrew Minson from the Global Cement and Concrete Association (GCCA) kicked off this week’s Virtual Global Concrete Conference with an overview of concrete’s role in the association’s 2050 climate ambition. The association announced in September 2020 that it was starting work on this roadmap for publication in the second half of 2021, just in time for the 2021 United Nations Climate Change Conference, currently schedule to take place in Glasgow, Scotland in November 2021. Minson ran through the topic, providing an overview of concrete’s intrinsic sustainable features and the policy levers the association is considering for its forthcoming roadmap.

One point from circular economy aspects of the plan included design for dis-assembly (DfD) and long life, loose fit modes of thinking around how a building using concrete should be conceived, designed, built, used and - crucially – reused. Long life, loose fit, low energy (to use its original name) was promoted by the Welsh architect Alex Gordon from the early 1970s. It covered themes of sustainability, flexibility and energy efficiency for building design ahead of both the 1970s oil crisis and the current climate one. DfD emerged in the 1990s as a way of thinking about a building’s demolition at the start and working from there. Deconstruction or demolition is prepared for through planning and design. It allows components and materials to be removed more easily, facilitating their subsequent reuse. So, components and materials can be removed more easily allowing their subsequent reuse and elements such as columns, walls, beams, and slabs can be disassembled to facilitate this. Last year Global Cement Weekly explored a similar path with the ideas of Dutch architect and commentator Thomas Rau (GCW348) and his concept of building materials as a service, following on from the Building Information Modelling (BIM) system, and the suggestion that companies simply rent (!) building materials from their manufacturers to encourage whole life thinking.

Chart 1: Uses of concrete by European Ready Mixed Concrete Organisation (ERMCO) members in 2018. Source: ERMCO.

Just how much concrete the world uses each year is a question beyond the scope of this article, given its range of applications and diversity of users. For example, the Cement Sustainability Initiative (CSI) estimated 25Bnt in 2009. Later, the International Organization for Standardization (ISO) technical committee for concrete, reinforced concrete and pre-stressed concrete placed the figure at around 33Bnt in 2016. It is worth considering how and where concrete is actually used. The chart above from the European Ready Mixed Concrete Organisation (ERMCO) shows how its members used concrete in 2018. Note that use in buildings comprised the biggest share, nearly two thirds, but that the rest included infrastructure, pavements, roads and more. Lifecycle thinking and its various offshoots can apply to all of these applications. Yet it’s easier to imagine a concrete building shell being reused within its lifespan than, say, a bridge or a road. Concrete used in infrastructure seems more suitable for re-use further down the waste hierarchy, such as recycling as an aggregate.

A few final thoughts to consider are that both Cemex and gypsum wallboard manufacturer Etex have invested in modular and/or offsite construction companies in January 2021. Both targets were relatively small companies suggesting growing interest in these sectors by larger players. Offsite building construction suits lifecycle thinking well because the modular components start off being built elsewhere before installation. Factoring in what happens afterwards should be relatively easy and expandable at scale. Finally, LafargeHolcim announced this week that it is acquiring two ready-mix concrete and aggregate suppliers in France and Italy that will give it 35 concrete plants in the region.

Sustainability places lifecycle thinking into mainstream building practice and some methods and tools will inevitably make it into any policy framework the GCCA will recommend. Whether some or all of the ideas above hang around remains to be seen but lifecycle thinking in some form or another is here already and not going anywhere.

The proceedings and video of the Virtual Global Concrete Conference 2021 are available to buy now

Register for the 2nd Virtual Global Concrete Seminar - 'Future Concrete' on 14 September 2021

Mexico/US: Cemex has invested US$15m in recommissioning a 1Mt/yr cement kiln at its CPN cement plant in Hermosilla, Sonora. The decision is intended to reduce cement shortages in the western US and bolster its supply chain in Arizona, California and Nevada. The project at the CPN plant is scheduled for completion in the second quarter of 2021 and will create 130 jobs.

Cemex USA cement commercial executive vice president Joel Galassini said, “Many cement customers in California, Arizona and Nevada have been impacted by supply constraints this past year. The decision to recommission this kiln was made with our customers top-of-mind, to give them reliable access through a local supply chain to help meet their growing needs. Our unique network of production facilities in this region allows us to make these types of investments that will have a meaningful impact on meeting our customers’ needs.”

California regional president Francisco Rivera said, “We are excited to build greater synergies with our Mexican operations to strengthen our US cement supply chain and help our customers avoid or mitigate any potential delays to their projects in 2021.”

France: Mexico-based Cemex has sold 24 concrete plants and an aggregates quarry in southeast France to Switzerland-based LafargeHolcim. Finalisation of the deal is expected in April 2021 and no approval by competition bodies is required. No value for the sale has been disclosed. The group said that the divestment is part of its strategy of focused portfolio development into high-growth markets.

Spain: Mexico-based Cemex has supplied 30,000t of cement and 100,000m³ of concrete for an expansion of Teruel Airport Platform (PLATA) maintenance, repair and operations airport in Teruel, Aragon. The company said that the expansion consists of a 3km runway, terminals, an expanded parking platform and two new hangars, in addition to an industrial zone and other facilities. The airport's current expansion phase requires a further 40,000m³ of concrete.

Europe, Middle East, Africa, and Asia regional president Sergio Menéndez said, "Since the beginning of the Teruel Airport project more than a decade ago, Cemex has been present in its construction and continuous expansion. We are proud to have contributed to this infrastructure, becoming an engine of economic recovery.”

UK: Cemex will supply 40,000t of lining-sprayed concrete for the construction of the 13km central section of the Thames Tideway sewer project in Greater London. Engineering partners Ferrovial Construction and Laing O’Rourke will use the concrete for shafts and launch tunnels. The company produced the concrete at its Buxton, Derbyshire concrete plant. It says that it offers ultra-high strength, consistency and two-hour workability in line with the stringent requirements of the job. It also needs to be pumpable with a pipeline length of up to 400m. The producer will deliver up to 3000t/month of the concrete to Central London over ‘a few months.’

Europe, Middle East, Africa and Asia president Sergio Menendez said “The Thames Tideway Tunnel project is one of incredible scale which will solve serious capacity issues with London’s sewer system and have considerable benefits for the area’s wildlife and population, while also preventing pollution, creating jobs, a rejuvenated river economy and new areas of public space.” He added “This is a remarkable piece of engineering, and we’re proud to be working with world-class contractors to build this key infrastructure in the most sustainable and cost-effective way possible for one of the world’s greatest cities.”

The 25km ‘Super Sewer’ will conduct the city’s sewage to a new treatment facility at Abbey Mills in the Borough of Newham. The central section runs between 30m and 60m below the Thames past part of West London, Westminster and the City of London.

Spain: Cemex España has announced plans to invest Euro4m in upgrades to its Buñol, Valencia, Muel, Zaragoza, Raspeig, Alicante and Rubí, Barcelona mortar plants. The upgrades will increase production capacity, safety and efficiency and improve product quality. The company said that the promotion of its range of over 160 special mortars is a main focus of the investment.

Cemex Europe, Middle East, Africa and Asia regional president Sergio Menéndez said “We recognise the growing demand for innovative mortar solutions for new and existing buildings to reduce carbon emissions in our cities and support the EU Renewal Wave. Our wide range of mortars for dry silos, in bags and ready to use, is reinforced by expert solutions for paving streets, plastered walls, tunnel solutions, plasters and special sands.”

The group is also investing in upgrades to production and packaging systems in its mortar segment in Poland and the UK.

Philippines: Cemex Philippines Solid Cement plant in Antipolo has lifted a new rotary kiln into position as part of a US$235m installation of a new production line at the site. Once complete the new line will add 1.5Mt/yr to the unit’s production capacity increasing the total to 3.4Mt/yr. The new production line will reuse waste hot gases to dry raw materials and high efficiency bag filters reduce improve emissions control. Cemex is also using its proprietary Low Temperature Clinker technology to reduce carbon dioxide emissions.

"This milestone demonstrates our full commitment to the development of the country and brings us closer to further strengthening our position in providing the infrastructure and building needs for economic development," said Ignacio Mijares, the chief executive officer (CEO) and president of Cemex Holdings Philippines.

China-based CBMI Construction has been contracted to build the new line. It lifted the new kiln in two days. Tong Laigou, chairman and general manager of CBMI Construction, said that the CBMI and Cemex Philippines' teams worked under strict protocols to secure the safety of the site.

UK: Cemex Ventures has invested in Modulous, a London-based company that uses a modular construction system. Modulous says it digitises its materials supply chain management to reduce costs and time and in construction process. It uses machine learning, generative design and 5D BIM modelling in its supporting software to support this. No value for Cemex Ventures’ investment in Modulous has been disclosed.

"By including Modulous in our portfolio, we offer the industry a unique offsite construction model" said Mateo Zimermmann, head of Cemex Ventures investment in Modulous. "The Modulous innovative approach enables the supply chain to deliver sustainable and high-quality homes, significantly reducing time and costs. Modulous does not require additional capital expenditure, which makes it globally scalable. This team is going to revolutionise the residential development industry.”

Modulous has secured a number of projects in the UK and Europe. It is currently preparing the delivery of a Euro7m residential scheme in London using its design and construction system that it claims will achieve completion 12 months ahead of schedule. Modulous is one of the winners of the 2020 Construction Startup Competition, the annual startup challenge organized by Cemex Ventures.

UK: Cemex UK has supplied 70m³ of Vertua Classic concrete to the site of Citu’s upcoming office building in its Climate Innovation District in Leeds, West Yorkshire. It will provide the building’s foundations. The company says that it has a 30 – 50% smaller carbon footprint than a standard mix. It produced the concrete at its Leeds ready-mix plant.

Ready-mix technical manager Tracey Carden said “We are very proud to have supplied our Vertua Classic concrete to the latest phase of work at Citu’s Climate Innovation District in Leeds, particularly as this will be its head office. This is a development that prioritises sustainable construction, making our low-carbon concrete the obvious choice for the office building foundations.”

Mexico: Cemex Mexico has signed an agreement with the state government of Puebla for the repair of 5km of road near Tepeaca. The El Sol de Mexico newspaper has reported that under the agreement Cemex will supply hydraulic concrete for the works. The company plans to first repair a 3km stretch of the road, then complete the remaining 2km in 2022.

President Juan Romero said “The purpose of Cemex is to build a better future. That is the reason that drives us to get up every day. We started at home, by building it for the more than 12,000 employees who work in the company and we made sure that everyone found in Cemex the best place to work and develop personally and professionally; but we also do it for our clients, with products of the highest quality and giving the greatest focus and attention to all the projects in which we participate, from the smallest expansion or remodeling of a small rural house to the large infrastructure works that they are underway in the country.”

In 2019 and 2020 the company invested US$3.5m in social projects in Puebla State. It repaired 4.5km of roads and donated 160t of concrete.