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News CarbonCure

Displaying items by tag: CarbonCure

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Qanbar Ready Mix runs trial with CarbonCure technology in Saudi Arabia

09 February 2022

Saudi Arabia: Qanbar Ready Mix has run its first trial mix of concrete using Canada-based CarbonCure’s CO2 utilisation technology. The Eastern Province-based ready-mixed concrete producer conducted a full-scale plant trial in late December 2021 in Ras Al Khair Industrial City, according to Gulf Construction. Employees, customers from Saudi Aramco and engineers were present at the event. Concrete supplied from Qanbar Ready Mix’s batching plants will be used to supply projects at the King Salman International Complex for Maritime Industries and Services.

Published in Global Cement News
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Cemento Polpaico implements CarbonCure technology in its concrete production

23 November 2021

Chile: Cemento Polpaico has obtained a licence for the use of Canada-based CarbonCure’s CO2 utilisation technology. The Diario Financiero newspaper has reported that the cement company plans to implement the technology in its concrete production.

Head of development and projects Matias Saenz said that Cemento Polpaico was among the first cement producers to commit to the UN’s Race to Zero decarbonisation initiative. It has also set out 20 sustainability goals to achieve before 2025. The company said that by implementing CarbonCure technology it is contributing to CarbonCure’s vision of eliminating 500Mt/yr of CO2 emissions.

Published in Global Cement News
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Stevenson Concrete brings CarbonCure technology to New Zealand

02 July 2021

New Zealand: Stevenson Concrete is set to bring concrete made using CarbonCure technology to the country in July 2021. The Auckland-based concrete producer is currently conducting final internal quality assurance at its Drury quarry and concrete plant before opening the product up on general sale. Canada-based CarbonCure’s technology uses a CO2 mineralisation process during production to reduce carbon footprint of concrete.

"Along with a number of other carbon-decreasing initiatives we are using, this technology is going to change the way New Zealand builds houses, footpaths, roads, pipes, and thousands of other man-made, everyday objects. Stevenson has brought it into the New Zealand mainstream, just as this technology is used in countries like Singapore, North America and parts of Europe," said Anthony Bitossi, general manager of Stevenson Concrete.

Published in Global Cement News
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A short look at low carbon cement and concrete

01 April 2020

Cement and concrete products with sustainability credentials have increased in recent years as societies start to demand decarbonisation. In spite of the recent drop in the European Union (EU) Emissions Trading Scheme (ETS) price, there has been a trend in recent years in the construction industry towards offerings with better environmental credentials. Indeed, this week’s position paper from Cembureau on a carbon border mechanism concerns directly the growth of these kinds of products within Europe. Typically, the higher profile projects have been slag cement or concrete implementations such as Hanson’s use of its Regen cement substitute in a London sewer project or David Ball Group’s Cemfree concrete in a road project also in the UK. In this short review we’ll take a selective look at a few of the so-called low carbon cement and concrete products currently available.

Table 1: Some examples of methods to reduce embodied CO2 in cement and concrete. Note - the product examples are selective. In some cases many other products are available.

Material Type Method Product examples
Cement SCM cement Lower clinker factor Many products
Cement Limestone calcined clay cement Lower clinker factor LC3, FutureCem, Polysius activated clay, H-EVA
Cement Calcium silicate cement Reduced process emissions Solidia, Celitement
Cement Recycled concrete fines Reduced lifecycle emissions Susteno
Cement Geopolymer cement Reduced process emissions Vertua
Cement Calcium sulphoaluminate cements Reduced process emissions Many products
Concrete CO2 curing/mineralisation Uses CO2 and reduces water usage Solidia, CarbonCure Technologies
Concrete Recycled concrete coarse Reduced lifecycle emissions Evopact, EcoCrete, FastCarb
Concrete SCM concrete Uses less or no cement Cemfree, Carbicrete, Regen
Concrete Uses less cement in mix Uses less cement  
Concrete Admixtures Uses less cement  
Concrete Locally sourced aggregate / better supply chain logistics Reduced transport emissions  
Concrete Geopolymer concrete Uses no cement E-Crete
Concrete Graphene concrete Uses less cement Concrene
Concrete Carbon offsetting Separate offsetting scheme Vertua

Looking at cement first, the easiest way for many producers to bring a lower carbon product to market has been to promote cements made using secondary cementitious materials (SCM) such as granulated blast furnace slag or fly ash. These types of cements have a long history, typically in specialist applications and/or in relation to ease of supply. For example, cement producers in eastern India often manufacture slag cements owing to the number of local steel plants. However, cement producers have more recently started to publicise their environmental credentials as they reduce the clinker factor of the final product. Alongside this though, in Europe especially, a number of so-called low carbon cement producers have appeared on the scene such as EcoCem and Hoffman Green Technologies. These newer producers tend to offer SCM cement products or other low carbon ones built around a grinding model. It is likely that their businesses have benefitted from tightening EU environmental legislation. How far cement producers can pivot to SCM cement products is contentious given that slag and fly ash are finite byproducts of other industries that are also under pressure to decarbonise. Although it should be noted that other SCMs such as pozzolans exist.

As will be seen below a few of the methods to reduce embodied CO2 in cement and concrete can be used in both materials. SCMs are no exception and hold a long history in concrete usage. As mentioned above David Ball Group sells Cemfree a concrete product that contains no cement. Harsco Environmental, a minerals management company, invested US$3m into Carbicrete, a technology start-up working on a cement-free concrete, in late 2019.

Limestone calcined clay cements are the next set of products that are starting to make an appearance through the work of the Swiss-government backed LC3 project, more commercial offerings like FutureCem from Cementir and H-EVA from Hoffman Green Technologies and today’s announcement about ThyssenKrupp’s plans to fit the Kribi cement plant in Cameroon with its Polysius activated clay system. They too, like SCM cements, reduce the clinker factor of the cement. The downside is that, as in the name, the clay element needs to be calcined requiring capital investment, although LC3 make a strong case in their literature about how fast these costs can be recouped in a variety of scenarios.

Calcium silicate cements offer reduced process emissions by decreasing the lime content of the clinker lowering the amount of CO2 released and bringing down the temperature required in the kiln to make the clinker. Solidia offers its calcium silicate cement as part of a two-part system with a CO2 cured concrete. In the US LafargeHolcim used Solidia’s product in a commercial project in mid-2019 at a New Jersey paver and block plant. Solidia’s second core technology is using CO2 to cure concrete and reducing water usage. They are not alone here as Canada’s CarbonCure Technologies uses CO2 in a similar way with their technology. In their case they focus more on CO2 mineralisation. In Germany, Schwenk Zement backed the Celitement project, which developed a hydraulic calcium hydro silicate based product that does not use CO2 curing. Celitement has since become part of Schwenk Zement.

Solidia isn’t the only company looking at two complementary technologies along the cement-concrete production chain. A number of companies are looking at recycling concrete and demolition waste. Generally this splits into coarse waste that is used as an aggregate substitute in concrete and fine waste that is used to make cement. LafargeHolcim has Evopact for the coarse waste and Susteno for the fine. HeidelbergCement has EcoCrete for the coarse and is researching the use of fines. Closing the loop for heavy building material producers definitely seems like the way to go at the moment and this view is reinforced by the involvement of the two largest multinational producers.

Of the rest of the other low carbon cement methods detailed in table 1 these cover other non-Ordinary Portland Cement (OPC) such as geopolymer and calcium sulphoaluminate cements. The former are a type of alkali activated binder and generally lack common standards. The latter are similar to slag cements in that they are established specialist products with lower CO2 emissions than OPC.

With concrete when trying to make a low carbon product the first choice is whether to choose a low-carbon cement as the binder or even not to use cement at all in the case of Regen or Cemfree. From here the next step is to simply use less cement in a concrete mixture. There are a number of ways to do this from optimising aggregate gradation, following performance specifications more closely, using strength tests like maturity methods and generally adhering to quality control protocols better to deliver more consistency. Read the Mineral Production Association (MPA) publication Specifying Sustainable Concrete for more detail on this. Using concrete admixtures can also help make concrete more sustainable by improving quality and performance at construction sites through the use of plasticisers and accelerators, by decreasing embodied carbon through the use of water reducers and by improving the whole life performance of concretes. The use of locally-sourced aggregates is also worth noting here since it can reduce associated transport CO2 emissions.

More novel methods of reducing embodied CO2 emissions in concrete include the use of geopolymer concrete in the case of Zeobond Group’s E-Crete or adding graphene as Concrene does. Like geopolymer cements, geopolymer concretes are relatively new and lack common standards. Products like Concrene, meanwhile, remain currently at the startup level. Finally, if all else fails, offsetting the CO2 released by a cement or concrete product is always an option. This is what Cemex has done with its Vertua Ultra Zero product. The first 70% reduction in embodied CO2 is gained through the use of geopolymer cement. Then the remaining 30% reduction is achieved through a carbon offsetting scheme via a carbon neutral certification verified by the Carbon Trust.

As can be seen, a variety of methods exist for cement and concrete producers to reduce the embodied CO2 of their products and call them ‘low-carbon.’ For the moment most remain in the ‘novelty section’ but as legislators promote and specifiers look for sustainable construction they continue to become more mainstream. What has been interesting to note from this short study is that some companies are looking at multiple solutions along the production and supply chain whilst others are concentrating on single ones. The companies looking at multiple methods range from the biggest building material producers like LafargeHolcim and HeidelbergCement to smaller newer ones like Solidia and Hoffman Green Technologies. Also of note is that many of these products have existed already in various forms for a long time like SCM cements and concretes or the many ways concretes can be made more sustainable through much simpler ways such as changing aggregate sourcing or working more efficiently. In many cases once markets receive sufficient stimulus it seems likely that low carbon cement and concrete products will proliferate.

Global Cement is researching a market report on low carbon cement and concrete. If readers have any comments to make please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it.

Published in Analysis
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Hawaiian Department of Transportation use low carbon concrete for road projects

09 July 2019

US: Hawaii’s Department of Transportation plans to use carbon-injected concrete for its new projects. This will include a new structure to protect a highway tunnel from rockfalls, according to Reuters. The Department of Transportation was testing CO2-injected concrete on an access road project with CarbonCure Technologies in May 2019. The latest decision follows a resolution by state legislators that city administrators ‘consider’ using CO2-injected concrete in city and county infrastructure where concrete is used.

In late June 2019 CarbonCure announced that its had formed a partnership with HC&D Ready Mix, a local concrete producer, to use its CO2-injected concrete process. It is the second deal with a concrete producer in the state that CarbonCure has arranged.

Published in Global Cement News
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Sean Monkman named Canada’s Mission Innovation Champion

29 May 2019

Canada: Sean Monkman, Senior Vice President of Technology Development at CarbonCure Technologies, has been named as Canada’s inaugural Mission Innovation Champion at the fourth annual Mission Innovation Summit (MI4) and 10th annual Clean Energy Ministerial (CEM10) summit hosted by Canada in Vancouver, British Colombia in late May 2019.

Mission Innovation, a global initiative involving 22 countries and the European Commission, has identified carbon capture utilisation and storage (CCUS) as one of eight Innovation Challenges that are key to achieving substantial emissions reductions. Mission Innovation Champions were selected from member countries to celebrate individuals with a track record of progressing creative new ideas that drive the pace and scale of the clean energy revolution.

Published in Global Cement News
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Ted Jones appointed as Vice President of Sales and Marketing for CarbonCure

07 March 2018

US: CarbonCure Technologies has appointed Ted Jones as its Vice President of Sales and Marketing. Previously he worked as the sales and marketing lead with Oldcastle Precast, Contech Engineered Solutions, and The Fort Miller.

Jones succeeds Bill Holden as Vice President of Sales. He will be launching and spearheading a new Industry Advisory Council, which is an advisory board made up of concrete industry leaders. He will continue to sit on CarbonCure’s Board of Directors. Jennifer Wagner, the former Vice President of Marketing, has been promoted to the Executive Vice President of Corporate Development.

Published in People
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CarbonCure’s Consortium demonstrates CO2 capture and utilisation technology at Cementos Argos Roberta plant

28 February 2018

US: CarbonCure has demonstrated an integrated CO2 capture and utilisation (CCU) process from cement for concrete production in January 2018 at Cementos Argos’ Roberta plant in Calera, Alabama. The consortium - comprising Carbon Cure, Sustainable Energy Solutions (SES), Praxair, Cementos Argos and Kline Consulting - says it is the world’s first project to collect cement kiln CO2 for subsequent utilisation downstream in concrete production and construction.

CO2 emissions from the Roberta cement plant were captured by SES’ Cryogenic CO2 Capture technology, transported by Praxair and reused in Cementos Argos' Glenwood, Atlanta concrete operations equipped with CarbonCure's CO2 utilisation technology. The concrete manufactured with the waste CO2 from the Roberta cement plant was then used in a local construction project in the greater Atlanta area. Design partners and fellow members of CarbonCure’s Carbon XPRIZE team such as LS3P Architects, Uzun + Case Structural Engineering, and Walter P Moore Structural Engineers completed the end to end integrated solution by creating demand for CarbonCure concrete products in the marketplace. Kline Consulting oversaw the commissioning and reporting of the industrial demonstration.

The project was an extension of Team CarbonCure's participation in the US$20m NRG COSIA Carbon XPRIZE Challenge, which incentivises and accelerates the development of integrated CCU technologies and new markets that convert CO2 emissions from coal and natural gas power generation into valuable products.

Published in Global Cement News
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Cementos Argos launches CO2 capturing concrete in Atlanta

09 February 2016

US: Cementos Argos has started incorporating and capturing recycled carbon dioxide (CO2) in several of the concrete mixtures it produces at its US plants, specifically the ones in Atlanta, Georgia. The CO2 is collected, stored and taken to the plant by the Canadian company CarbonCure, which developed the batching technology. The gas chemically reacts with the calcium hydroxide and the water of the concrete, making insoluble calcium carbonate.

“We are extremely proud of being the first company in the United States to be able to offer its customers a product with CO2-capturing and incorporating properties. This concrete, even when demolished, never releases the CO2 contained within its structure, allowing us to close the gas’ cycle and contribute to making the construction sector more and more sustainable and eco-friendly,” said Jorge Mario Velásquez, CEO of Cementos Argos.

Published in Global Cement News
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