Displaying items by tag: concrete

Czech Public: Ukraine-based Betonmash has fulfilled an order for a Granit-42 ready-mix concrete batching plant from a customer in the Czech Republic. The 42m3/hr-capacity plant consists of a 750l rotary mixer and 75t hopper. Italy-based Bonfiglioli supplies the Grant-42’s drives, Italy-based Camozzi supplies its pneumatic components and Italy-based WAM supplies its screw conveyors. It uses sensors produced by Netherlands-based Zemic.

Egypt: Saudi Arabian-based Mohammed Hassan Al Naqool Sons has started pilot production at its Cement Industries subsidiary based in El Alamein. The project has an investment of around US$5m. It will manufacture cement-based products, including blocks and concrete. Commercial production at the site is expected to start in the third quarter of 2021.

UK: SigmaRoc intends to offer a cement-free alternative for every product in its precast concrete portfolio from January 2022. The producer claims it is the only company to do this. The change will effect products made by its Product Group including Allen Concrete, CCP Building Products and Poundfield Precast. The move follows the launch of its Ordinary Portland Cement free Greenbloc product in February 2021.

Managing director Michael Roddy said, “Greenbloc sets the bar for bringing a cement-free alternative to a traditional building material into mainstream use, but it was only ever the start of our low-carbon journey.” He added “The benefits of using cement as a building material are undisputed from an application perspective, however the carbon required in the manufacturing process cannot be ignored. Our aim is simple. The market is changing and understands the need to acknowledge, address and action a tangible approach to decarbonisation. We want to give architects, contractors and specifiers the choice of using an ultra-low carbon cement-free alternative to precast cementitious products.”

Canada: Testing specialist Giatec has launched SmartMix, a web-based software product for concrete ingredient optimisation. It is intended to help concrete users lower their cement construction for jobs. The supplier estimates that the tool could lower the CO₂ emissions of concrete production by 400Mt/yr, the equivalent carbon footprint of 110m cars.

Head of research and development Andrew Fahim said, “Artificial intelligence (AI), machine-learning algorithms and advanced analytics on construction jobsites are going to pave the path forward for our industry to meet increasing infrastructure demands. I am proud to provide contractors and producers AI tools to make impactful decisions and get ahead of the competition by bringing more value to their customers while reducing the carbon impact of their products.”

India: LafargeHoclim subsidiary Ambuja Cement has launched Ambuja Cool Walls, a product consisting of its aerated pre-cast concrete blocks. The producer says that Cool Walls have improved strength compared to walls made of brick. They also increase buildings’ insulation, according to the producer.

US: Aggregate producer Vulcan Materials Company has agreed to buy US Concrete for US$1.29bn.The transaction has been unanimously approved by the boards of directors of both companies and is expected to close in the second half of 2021, subject to US Concrete shareholder approval, regulatory clearance and other customary closing conditions.

Tom Hill, Chairman and chief executive officer of Vulcan Materials Company, said, "US Concrete is an important Vulcan customer in a number of key areas, and this transaction is a logical and exciting step in our growth strategy as we further bolster our geographic footprint.”

US Concrete runs 27 aggregates operations serving California, Texas and the Northeast US. It shipped 12.6Mt of aggregates in 2020. Vulcan also said that the acquisition represented a ‘natural’ addition to Vulcan's business. The deal also adds US Concrete’s ready-mixed concrete operations to Vulcan's existing concrete business.

Canada: The Cement Association of Canada (CAC) and the government have published a joint statement detailing their plant to develop a roadmap to net-zero carbon concrete. When launched in December 2021, the roadmap will provide Canadian cement producers with the policies, tools and technologies to contribute to the achievement of net-zero concrete by 2050. The plans will cover areas including: supporting the low-emissions building materials supply chain, building an innovative opportunities framework and engaging stakeholders. According to the statement, the roadmap will offer total potential CO₂ reduction of 15Mt by 2030, and 4.0Mt/yr thereafter.

The partnership will establish a CAC-led Industry-Government Working Group in collaboration with the National Research Council the Standards Council of Canada and Innovation, Science and Economic Development. Among its tasks will be the publication of updated environmental product declarations.

Mexico: Cemex says that it has supplied its low-CO₂ Vertua concrete to 786 construction works in Mexico. The El Sol de San Luis newspaper has reported that the volume so far delivered totals 33,000m³. In late May 2021, 398 further projects have placed orders for future deliveries.

The UK construction market is in a funny situation right now. As the economy has started to grow in 2021, shortages of building materials have been reported following the relaxation of coronavirus-related restrictions. In April 2021, for example, the Construction Leadership Council (CLC) added cement, aggregates and certain plastics to its existing lists of products in short supply. These commodities joined a slew of other materials, including timber, steel, roof tiles, bricks and imported products such as screws, fixings, plumbing items, sanitaryware, shower enclosures, electrical products and appliances. The CLC advised all users to, “plan for increased demand and longer delays, keep open lines of communication with their suppliers and order early for future projects.”

Skip forward a month to May 2021 and these shortages are on more people’s minds with the announcement by the Office for National Statistics that UK monthly construction output grew by 5.8% month-on-month to around Euro16.5bn in March 2021 due to both new work and to repair and maintenance projects. Quarter-on-quarter output also rose by 2.6%, adding to the impression of a building sector emerging from the fog of lockdown. In the face of this good news Nigel Jackson, the chief executive of the UK mineral Products Association (MPA), was asked about reported shortages of cement. He told local press this week that “it would not be surprising if there were short-term issues of supply as the economy gathers momentum.” He added that the biggest issues had been observed in levels of bagged cement typically used in domestic projects.

The MPA followed this up with the results of a survey of building materials manufacturers that reported a slow but steady start to 2021 with mounting construction demand month-on-month. Sales volumes of aggregates and concrete were both up quarter-on-quarter but volumes of asphalt and mortar fell. Unfortunately that survey didn’t cover cement volumes but it did have more to say about concrete. In its view ready-mixed concrete sales had been subdued since 2017 due to the UK’s departure from the European Union (Brexit) and a general slowdown in residential building. The market recovery seen so far in 2021 was likely to be merely a return to growth from a subdued level of activity that pre-dates Covid-19.

At the time of writing the UK government faces a decision about whether to continue opening up the economy or exercise caution in the face of the as-yet unknown consequences of the Indian variant of coronavirus. This may delay talk of building materials shortages but it can’t avoid it forever. In the UK, cement shortages appear to be due to the self-build segment and will hopefully soon be resolved.

A shortage of cement in the UK may not mean much to people outside the country, with the exception of exporters. Yet the wider picture here is that the coronavirus pandemic has affected the production of building materials, changed end-user behaviour and distorted markets around the world. Other examples include the row over the price of cement in Nigeria, the boom in cement sales in Brazil in the second half of 2020 or reported shortages in Jamaica this week. A significant number of people, when forced to spend more time at home, appeared to save money and then decided to either move to a different house or make their current one better. Yet at the same time differing government restrictions and market fluctuations have seen building material output levels vary widely. Other reasons are at play both local and international. Brexit in the UK is one example of the former, as importers and exporters have been forced to grapple with new rules and costs. The temporary blockage of the Suez Canal in March 2021 is one example of the latter. No wonder supply chains are struggling. That last point goes wider than building materials though, for example, as anyone trying to buy semiconductors has discovered. One fear behind all of this though is whether these are temporary shortages or whether inflation is on the way for the global economy generally. In this is the case, then it signals the end of the low consumer inflation rate era since the financial crash in 2008 and may herald changes in behaviour from both producers and consumers.

Sweden: Researchers at the department of architecture and civil engineering at the Chalmers University of Technology in Gothenburg in Västra Götaland county are developing a technology to enable concrete to store energy in the manner of a rechargeable battery. The team has proposed a design based on cement mixed with short carbon fibres. The concrete is then fitted with a metal-coated carbon fibre mesh that forms the battery’s anode and cathode. The team says that a future product based on the technology would enable solar-powered roads and buildings to store their own energy. Additionally, the introduction of sensors to the system would enable full and constant monitoring of the condition of the structure.

Chief researcher Emma Zhang said, “Results from earlier studies investigating concrete battery technology showed very low performance, so we realised we had to think out of the box, to come up with another way to produce the electrode. This particular idea that we have developed – which is also rechargeable – has never been explored before. Now we have proof of concept at lab scale.”