Displaying items by tag: Standards

US: ASTM International’s concrete and concrete aggregates committee (C09) is developing a proposed standard specification for a broad range of supplementary cementitious materials (SCM). Larry Sutter, an ASTM International member and the principal engineer at Sutter Engineering, commented that this performance specification (WK70466) will ease the adoption of new materials used for SCMs as established sources become less available.

Sutter said “For a variety of reasons, historic sources of SCMs, like coal fly ash from electric power generation, are in short supply and new materials are emerging.” He added, “These new materials do not fall under existing specifications, leading to the need for new specifications. Rather than writing a new specification for every emerging material, we are writing a performance specification that can be used to cover the full range of them.”

Sutter noted that concrete made with SCMs can be less costly, more durable and more sustainable than ordinary Portland cement. New specifications will allow these new materials into more construction projects. This effort relates to the United Nations Sustainable Development Goal #7 on clean and affordable energy.

Switzerland: Holcim has published its Climate Report 2023, detailing the company’s progress towards meeting its sustainability commitments up to the end of 2022. The cement producer recorded net specific CO₂ emissions per tonne of product of 562kg/t, down by 1.7% year-on-year from 572kg/t in 2021. In line with its 1.5°C climate change-aligned targets, Holcim is committed to 420kg/t specific CO₂ emissions by 2030 and net zero by 2050.

Overall, the group’s Scope 1 CO₂ emissions from cement production fell by 2.5% to 77Mt from 79Mt, while its Scope 2 emissions remained at 5Mt and its Scope 3 emissions fell by 11% to 47Mt from 53Mt. Its cement had an average clinker factor of 73%, down from 73.6% in 2021. Holcim processed 6.8Mt of construction and demolition waste, up by 3% from 6.6Mt. Meanwhile, its thermal substitution rate of alternative fuel (AF) rose to 28% from 26%.

CEO Jan Jenisch and chief sustainability officer Magali Anderson said “With our successful transformation, we reduced our CO₂ per net sales by 21% in 2022, and commit to reducing it by over 10% in 2023. Accelerating the shift to net-zero cities requires deep partnerships across our value chain. In 2022 we engaged with public authorities to evolve building standards, with cities to scale up green demand in their projects, and with architects and engineers to specify sustainable solutions in their designs. We did this as a key partner for our customers, bringing solutions that help them achieve their sustainability goals.”

UK: Hanson says it has become one of the first companies in the UK to be certified to the new ISO 19443 standard, for companies supplying products and services that are important to nuclear safety. The subsidiary of Germany-based Heidelberg Materials is a supplier to the nuclear sector and is currently working with three of the delivery teams on the Hinkley Point C (HPC) project.

Stewart Cameron, head of nuclear at Hanson UK said “It has taken our HPC team a year to complete the ISO 19443 process.” He added, “Although it is not a requirement for our supplies to the project, it recognises the efforts we make – and helps others understand – why nuclear needs to be different.”

Canada: The city administration of Langford in British Columbia plans to enact regulations requiring all public and private projects to use reduced-CO₂ concrete. It plans to support the rules with parallel measures affecting the design of buildings.

Victoria News has reported that the city authorities previously mandated reduced-CO₂ cement for all projects in June 2022, but subsequently relaxed the regulations after only one company – Butler Concrete and Aggregates – completed the transition. Butler Concrete and Aggregates produces its reduced-CO₂ concrete using slag cement supplied by Lafarge Canada.

Ivory Coast: The Council of Ministers has approved cement producers to use dolomite in place of limestone to reduce imports from Europe and Asia. The government said that it had conducted the necessary tests supporting the change in the local cement standard, according to the Agence Ivoirienne de Presse. The Ministry of Industry and other related government departments have been instructed to take action to support the change.

India: The government is planning to introduce new quality standards for cement. Reuters has reported that the central government plans to implement the change before the end of December 2022. A government source said "Better standards help comply with international standards." It hopes that the cement sector will increase its export opportunities as a result.

Algeria: Groupe des Ciments d'Algérie (GICA) has obtained a certificate of conformity with European standards (CE) for three types of cement. The certification should allow the company to export more products to Europe, according to the Expression newspaper. It applies to its Gica Moudhad and Gica Béton products. The move follows similar certification of products with the Association Française de Normalisation (AFNOR) from the company’s Aïn El Kebira plant in July 2021. At the same time the Minister of Industry said it was helping the group with its export strategy.

In 2021 GICA exported 2.25Mt of cement to countries including the Ivory Coast, Gambia, Ghana, Mauritania, Senegal , Cameroon, Benin,  Guinea, Brazil, Peru, the Dominican Republic, Haiti and a number of European countries.

Ghana: The Ghana Standards Authority (GSA) has reported discoveries of Empire Cement brand cement on sale on the open market despite neither it nor the Ghana Environmental Protection Agency (EPA) having issued permits for Empire Cement to produce cement. Graphic Online News has reported that the suspect products are wrongly labelled with certification marks. GSA director general Alex Dodoo warned that this constitutes an offence.

France: The Scientific and Technical Center for Building (CSTB) has certified Hoffmann Green Cement Technologies’ clinkerless H-UKR alkali-activated slag cement for structural use in buildings of all types. BusinessWire News has reported that the certification confirms the product’s safety, sustainability, lifespan and performance in conformity with Eurocode 2 and Eurocode 8 design standards.

Co-founders Julien Blanchard and David Hoffmann said “In the midst of ongoing frenetic communication regarding carbon neutrality, Hoffmann Green Cement is as usual endeavouring to back its announcements with verified and evaluated elements. The granting of these evaluations further objectifies the quality of our cement, notably with the awarding of a lifespan of 100 years. In this regard, we would like to thank the CSTB’s teams for drafting this unprecedented technical appraisal and our own teams who are working tirelessly on seeking innovative decarbonised solutions to preserve tomorrow’s world.”

Peru: The Ministry of Labour and Employment Promotion has initiated talks with cement producers, exporters and unions with a view to changing the standard national cement bag weight. The ministry recognised the 42.5kg/bag standard as a historical anachronism and unsafe. The Federation of Civil Construction Workers (FTCCP) has reported lower back injury as the main cause of ‘desertion of construction site.’ Beside the risk of injury, the standard has allegedly contributed to discrimination against older builders, because site managers often consider even those well below the state early retirement age of 55 to beunfit. The union has argued that 25kg bags would reduce the risk of harm to quality of life to 15%, while 15kg bags would entail a risk of just 5%.

Standards authority Produce will now hold a round table with stakeholders to review the possibility of a 41% weight reduction to the international standard of 25kg. Federation of Cement and Ready-Mix Workers of Peru (FETRACEPPE) general secretary Luis Gilvonio said that this will not solve problems overnight: where firms start instructing workers to carry two bags at a time, their net load will have increased. As such, he argued for continued awareness-raising alongside the law change.

Bagged cement accounted for 70% of Peruvian producers’ cement sales in 2021.