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Ecocem is an Irish multinational that develops and manufactures low-carbon cement. Its focus is on developing and manufacturing innovative low-carbon cement technologies and products with the overall aim of reducing the amount of CO2 emissions produced by the cement and construction industries. It is considered Europe’s leading independent developer of low-carbon cement technologies[1].

The company’s headquarters are in EastPoint Business Park in Dublin, Ireland.   

Ecocem operates four plants and two import terminals, these are located in Ireland, France, The UK and The Netherlands[2]. It is also currently permitting to construct a terminal and milling operations in the port of Los Angeles, California[3].

At present, Ecocem sells its low-carbon cement technologies in nine different markets including France, Netherlands, Germany, Ireland, The UK, Belgium,Italy and Sweden.

Ecocem invests heavily in Research and Innovation. Currently, over 10% of its total staff is dedicated to research with fourteen of the Research and Innovation team staff holding PhDs. The company also wholly or partly funds six post-doctorates, twelve PhD’s and two Masters Degree's at a number of institutions globally. It has three research laboratories, two of which are lab collaborations with University of Paris Saclay and Toulouse University[4]. Ecocem’s own laboratory is based at the company’s Research and Innovation centre in Champlan, France.[5]

To date, Ecocem’s low carbon cement technologies have prevented the generation of 18 million tonnes of carbon[6]. Ecocem does this by reducing the amount of clinker, the core active ingredient in cement which is responsible for 95% of cement’s CO2 emissions[7], substituting it with alternative low carbon reactive materials such as GGBS.

In late 2022, Ecocem unveiled its ACT technology (Advanced Cement Technology), a low carbon cement technology that is fully scalable worldwide[8]. The technology is compatible with existing manufacturing plants and processes and requires little additional investment[9]. ACT obtained a European Technical Assessment (ETA) in early 2024[10].  

ACT combines a range of technical innovations to reduce the amount of clinker used in cement manufacture, by substituting clinker with alternative Supplementary Cementitious Materials (SCMs) and using the key ingredients much more efficiently. The technology’s compatibility with a range of these SCMs makes the solution scalable. ACT can decarbonise the production of cement by as much as 70% compared to the average European cement, while delivering the necessary, strength, durability and workability required in any concrete it is used to manufacture[11]. 

Worldwide, Ecocem currently employs over 210 people.

History

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Ecocem was founded in 2000 by Irishman Donal O’Riain, who had a vision to decarbonise the cement industry[12], which is responsible for almost 8% of all global CO2 emissions[13]. In 1969, O'Riain graduated from University College Dublin with a degree in Electrical Engineering and in 2014 was awarded the prestigious UCD Alumni Engineering Award in recognition of his outstanding entrepreneurial achievements in carbon-neutral construction[14]. His first job was as an engineer in ESB.

Prior to founding Ecocem, O’Riain ran his own consultancy business which specialised in cementitious materials and previously held senior management positions in KPMG, CRH plc[15] and Steetley/Redland plc. After the company was formed in 2000, Ecocem built its first plant in The Netherlands in 2002 with a capacity of 350,000tpa[16]. The following year, Ecocem opened a second plant in Dublin, Ireland[17].

In 2007, Saint Gobain, the world's largest building materials company[18], invested in Ecocem by purchasing a 30 per cent share[19]. Ecocem then also formed a joint venture with ArcelorMittal, the world’s second largest steel producer and Europes biggest[20], to establish Ecocem France, which is managed by Ecocem.

The joint venture company went on to open its first French plant in 2009 co-located at an Arcelor Mittal site in Fos-sur-Mer, near the city of Marseille[21].

In 2014, Ecocem formalised its already rich innovation approach with the creation of an Innovation Programme called “Beyond Slag” to develop new uses for GGBS (Ground Granulated Blast-furnace Slag) that focused on three main areas:

  • Increasing the substitution rate of GGBS within traditional cement using chemical and thermal activation
  • Producing blended cements
  • Developing new products

The programme also included identifying and refining alternatives to slag, given the fact that changes to steel industry manufacturing processes and the shift from blast furnaces to electric arc furnaces, will reduce the availability of GGBS in the coming decades and change the type of byproduct produced by the steel manufacturing process. 

In 2016 and 2017, Ecocem opened import terminals in the UK at Runcorn[22] and Sheerness[23]. The company also opened a second grinding plant at Dunkirk in France in April 2018, which serves both France and the United Kingdom[24].

The following month in May 2018, it was also announced that ArcelorMittal would be strengthening their strategic link with Ecocem by increasing their stake in Ecocem France from 30% to 49%.[25]

Since the creation of the joint venture nearly 20 years ago, Ecocem and ArcelorMittal have worked closely to improve the recovery of granulated blast furnace slag from ArcelorMittal’s steel mills and used it to produce high-performance low-carbon cement. This joint relationship with Ecocem France allows ArcelorMittal to develop a low carbon product from waste in line with circular economy principles.  

On the 7th of May 2021, Ecocem announced the completion of a E22.5M equity investment by Breakthrough Energy Ventures (BEV) and Breakthrough Energy Ventures Europe (BEV-E)[26]. Breakthrough Energy Ventures is an investment fund founded by Bill Gates, it finances, launches and scales companies that can tackle the five big challenges set out by Bill Gates in his book - “How to avoid a climate disaster”.

The deal saw Breakthrough Energy Ventures take a 10% stake in Ecocem.

Research and Innovation

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Ecocem focuses heavily on Research and Innovation, the company currently has three research laboratories, two of which are Lab Collaborations with University of Paris Saclay and another with Toulouse University. Ecocem’s Research and Innovation centre is headquartered in their Centre of Excellence for Research and Innovation in Champlan, France.  

When Ecocem initially established its innovation team, founder Donal O’Riain asked the team to work closely with commercial teams to meet customers. Together they discussed customer needs and got an understanding of what was needed to innovate within the cement industry and what customers would find most helpful. As part of this process customers met some of the world's leading experts on materials science[27].

As part of its commitment to Research and Innovation, Ecocem currently funds six Postdoctorates, twelve PhD’s and two Masters Degrees at a number of academic institutions, including in:

In 2024, Ecocem was named as an industry partner of Science Foundation Ireland[29], the programme will support placement at Ecocem for a student from Atlantic Technological University to conduct research activities into optimising the cement technology company’s breakthrough ACT technology for Irish concrete using Irish materials.

Ecocem hosts an annual Research and Innovation Day, showcasing and highlighting innovations and demonstrating new advancements for decarbonising the construction industry[30].

In November 2023, Ecocem hosted a symposium which convened fourteen of the world’s leading materials scientists and engineers to interrogate and test its ACT low carbon cement technology. At the event, those in attendance signed a call to action, advocating for the adoption and application of the full potential of materials science and engineering to deliver scalable low carbon technology to the cement and concrete industries to accelerate carbon reduction[31].

Products

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ACT Low-Carbon Cement Technology

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ACT is a next generation low carbon cement technology that can decarbonise the production of cement by as much as 70%, while delivering the necessary strength durability and workability required in any concrete it is used to manufacture. It does this by reducing the clinker content of cement. Clinker is the key reactive material in cement and concrete and is responsible for over 90% of emissions from the cement and the concrete it is used to make. [32]

Reducing the amount of clinker in cement requires the substitution with alternative reactive materials also known as SCMs (Supplementary Cementitious Materials). These materials include calcined clays, natural pozzolans and various steel slags, by products of the steel manufacture process, and are widely available. ACT technology optimises the performance of these SCMs cand enables them to be used with much greater efficiency.[33]

According to Ecocem, since ACT enhances and improves the efficient use of a range of alternatives to clinker, it can be used worldwide and is scalable. It can be produced at almost all existing cement plants without significant investment or modifications and can be deployed rapidly and cost effectively.[34]

ACT is the result of almost a decade of innovation focused on developing scalable, low-carbon, competitive cement technologies. It has been subject to extensive technical validation and has been successfully demonstrated in industrial trials. Ecocem expects to make ACT available commercially in 2026, starting with the French Market.  

In February of 2024, it was announced that Ecocem had obtained a European Technical Assessment for ACT[35] in a move that would provide it with a route to full CE marking and commercialisation by 2026.

Ecocem GGBS (Ground Granulated Blastfurnace Slag)

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Ecocem GGBS (Ground Granulated Blastfurnace Slag) is a high-performance supplementary cementitious material that increases the technical performance, improve the appearance and minimize the environmental impact of the concrete and any cement-based products it is used to make[36].

Ecocem GGBS is made from a byproduct of steel production, which Ecocem gets supplies of from a range of sources such as ArcelorMittal, TaTa Steel, Hüttenwerke Krupp Mannesmann (HKM), Melasco Mortiers and JFE Steel. It is manufactured in accordance with the EU Standard, EN 15167-1:2006 and blended with ordinary Portland cement (OPC) to create concrete with a lower carbon footprint[37].

Ecocem GGBS has a third party verified Environmental Product Declaration of 42kg CO2 per tonne[38].

Ecocem Ultra
[edit]

Ecocem Ultra is an award-winning technology[39] that was developed by Ecocem in conjunction with VINCI Construction[40].

Ecocem Ultra is an alkali activated binder that is intended for use in the preparation of concrete, mortar and other construction mixes and in the manufacture of construction products. It is characterised by high resistance to chemical attack and low heat of hydration and ultra-low carbon footprint.

When Ecocem Ultra is used, 80KG of CO2 per tonne of cement is produced compared to over 600kg CO2 per tonne of cement in traditional industry average cement[41].

Ecocem Ultra forms part of VINCI’s Ultra-Low Carbon Concrete range and is already being used on major projects across Europe including The Grand Paris Express[42] and Olympic Games 2024 in France[43], and in EcoPark South[44], the first phase in North London Waste Authority’s plans to create a GBP1.2bn sustainable waste management hub and energy recovery facility.

Ecocem Superfine
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Ecocem Superfine is a premium ground blast furnace slag. It is designed to be used as a specific addition in binders, all dry mortar applications, high performance concrete (HPC) and precast concrete, to reduce carbon emissions, improve rheology, strength and durability. It can be combined with the use of traditional blast furnace ground slag.

It is created by grinding granulated blast furnace slag to a very low particle size and can be added to products to significantly improve a range of performance criteria.  

Extensive trials in Abu Dhabi have shown that Ecocem Superfine is a good substitute for silica fume[45], it improves the performance of high-performance concrete by enhancing the rheology properties and maintaining performance criteria. The product helps to reduce the impact on the environment by reducing the cement content of your compositions.

Ecocem Superfine has a carbon footprint of 32kg CO2 per tonne and has a verified Environmental Product Declaration.[46]

Ecocem CEM VI
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Ecocem CEM VI cement is a low-carbon cement with characteristics similar to traditional cements used in the construction of buildings. It is composed of 33% ground blast furnace slag and limestone filler, Ecocem CEM VI cement offers a reduced carbon footprint for the production of concrete.

Its carbon footprint is 419 kg eq. CO2/tonne.

It is suitable for all exposure classes according to standard NF EN 206 A2/CN. CEM VI cement is a ternary cement made up of ground granulated blast furnace slag (CE), limestone filler and Portland cement (CE-NF)[47].

Ecocem CEM III/A
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Ecocem CEM III/A is a specially formulated blend of traditional cement and a minimum of 50% Ground Granulated Blastfurnace Slag (GGBS) that is EN 197-1 certified CEM III/A 42.5N cement.

Its strength, durability, and low heat properties make Ecocem CEM III/A ideally suited to marine, agricultural, and chemically aggressive environments, as well as deep pour foundations such as wind farms[48].

Construction Projects 

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Since its incorporation in 2000, Ecocem products have been used in a wide variety of construction projects, throughout Europe, including a number of high-profile developments:  

Tottenham Hotspur Football Stadium, London, United Kingdom

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A photo of the Tottenham Hotspur Stadium taken from outside
Tottenham Hotspur Stadium, London, United Kingdom.

Tottenham Hotspur Football Stadium started construction in 2019 and is widely regarded as one of the world’s best stadiums. Aside from being the home of Tottenham Hotspur Football Club, it also hosts events from a wide variety of industries and sports including NFL, Rugby and Music.

The stadium features a fully retractable natural turf football pitch[49] and a F1 Go-Karting track[50] beneath the stadiums South Stand opened in February 2024

Ecocem worked in conjunction with Macrete to manufacture over 9,000 individual pieces of precast concrete. Ecocem GGBS was used at a 36% replacement level to the Cement greatly lowering the carbon footprint of the product. [51]

In 2021, the stadium was awarded both the RIBA London Award and the RIBA National Award by the Royal Institute of British Architects. In 2023, the stadium was chosen as Best Venue by Mondo Stadia at the World Football Summit[52].  

2024 Olympic Games, Paris, France

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The Olympic and Paralympic Village housed the athletes during the Paris 2024 Games. As well as providing accommodation and services to 2024 Olympic athletes and their families, the Village was also designed to deliver a new part of the city, mirroring Paris 2024’s conscious efforts to reduce emissions and act sustainably with the people of Seine Saint Denis in mind.  

On the 9th of November 2021, it was announced that Ecocem would provide their low-carbon cement to the construction of the Athletes’ Village, Media Village and Center Porte de la Chapelle in France ahead of the Olympic Games taking place in 2024[53].

In total, 13,326 tonnes of CO2 emissions were saved when compared to the use of CEM-I cement. In total, 25,140 tonnes of Ecocem products were used[54].

The sustainability focus of the Paris Olympics will ensure that the following the games these buildings will be transformed into offices and residential housing, known as the ‘Universeine Eco-District’, after the games take place. Universeine Eco-District will transform into a neighbourhood with:  

  • 2,500 new homes
  • One student residence
  • One hotel
  • A three-hectare landscaped park
  • About seven hectares of gardens and parks
  • 120,000 sqm of offices and city services
  • 3,200 sqm of neighbourhood shops[55]

The Grand Paris Express, Paris, France

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A graphic of a map of the Grand Paris Express line
The Grand Paris Express, Paris, France.

The Grand Paris Express is a project consisting of new rapid transit lines and the extension of existing lines being built in the Île-de-France region of France. The project comprises four new lines for the Paris Métro, plus extensions of existing lines. A total of 200 kilometres (120 mi) of new tracks and 68 new stations are to be added, serving a projected 2 million passengers a day.  

On 9 November 2021, Ecocem announced that Ecocem Ultra would be used on a pilot site of the Grand Paris Express, the largest transport project in the whole of Europe.  

This development marks the first use of ultra-low carbon cement in a tunnel in Europe. It is hoped that this industrial-sized trial will demonstrate the possibility and benefits of using more environmentally friendly materials in tunnels more widely going forward.  

HS2 – High Speed Railway, United Kingdom

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A photo of the HS2 High-Speed Railway during construction in The United Kindom
The HS2 High-Speed Railway during construction in The United Kingdom.

High Speed 2 (HS2) is a high-speed railway which is under construction in England.

The route will be between Handsacre, in southern Staffordshire, and London, with a spur to Birmingham, Various low carbon Ecocem technologies are being employed throughout its construction.

Thanks to its strong UK network, Ecocem secured a direct supply contract with Eiffage (Central Section 2 and 3), and indirect supply contracts (via Cemex) for Northern (N1) and Southern (S1 and 2) Sections.  

Ecocem GGBS was used in the construction phase of the HS2, saving approximately 161,162.80 tonnes of CO2 from being emitted.

The Aviva Stadium, Dublin, Ireland

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In the construction of The Aviva Stadium, Ireland’s national football and rugby stadium, used Ecocem’s GGBS (Ground Granulated Blast Slag), resulting in 4,000 tonnes of CO2 being saved from entering Earth’s atmosphere[56]. The stadium covers a total of 6.4 hectares with a 50m tall façade and cost €410 million to complete[57].

A photo of the Aviva Stadium from outside, in Dublin Ireland
The Aviva Stadium, Dublin, Ireland.

During the construction of the stadium, 8,000 precast concrete units were made off-site and 72,000 tonnes of concrete were produced in-situ. GGBS was specified for use in all in-situ and precast elements saving over 4,000 tonnes of CO2. This amount of CO2 equates to taking approximately 1,280 cars off the road in one year[58].

The use of GGBS in the concrete not only saved 4,000 tonnes of CO2, it also resulted in a high-quality finish. The lighter finish resulting from the use of a GGBS base concrete also delivered a greater albedo effect than Portland Cement. Essentially, the lighter colour reflects more heat into the atmosphere instead of absorbing it and reduces the heat island effect[59].

In 2010, The Aviva Stadium was chosen as the Overall Winner in the Building Category by Irish Concrete Society[60] and in 2011 won Best International Project by British Construction Industry Award, this award recognises excellence in UK and International Building & Engineering Projects[61].

The Convention Centre, Dublin, Ireland

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A photo of The Convention Centre in Dublin, Ireland
The Convention Centre, Dublin, Ireland.

The Convention Centre in Dublin, Ireland was opened in September 2010 and is the world’s first carbon neutral convention venue. It is located in the heart of Dublin City Centre, along the banks of the River Liffey.  

During construction of the Convention Centre, using Ecocem GGBS prevented over 10,500 tonnes of CO2 being produced. 70% Ecocem GGBS was specified for both the deep foundations and the basement of the centre. A high percentage of Ecocem GGBS was used to reduce permeability, increase durability, and reduce the likelihood of thermal cracking[62].

The Convention Centre hosts both national and international exhibitions and conferences and has a capacity of over 8,000 people, the building is characterised by its impressive glass frontage and features an auditorium, banquet, exhibition halls, and various meeting rooms.

One of the largest meeting rooms in the Convention Centre is named after Ecocem for supplying the low-carbon cement for the construction of the building[63].

The Convention Centre has won 64 industry awards since opening, including the World Travel Awards World’s Leading Meetings and Conference Centre in 2017, 2019 and 2022 and Europe’s Leading Meetings and Conference Centre eight years in a row from 2017-2024[64].

A photo of the Hekla Tower in Paris, France.
The Hekla Tower in Paris, France.

Hekla Tower, La Defense, France:  

Standing 220 meters tall, with 48 stories and 76,000 square meters of office space, the Tour Hekla is a skyscraper which stands in Puteaux, in the La Defense district of Greater Paris, in France. It will accommodate up to 5,800 workers and features a roof top terrace with panoramic views of Paris and La Defense[65]. Ecocem engineered concrete and performance concretes with 30% to 70% substitution of Ecocem GGBS, for concretes ranging from C30 to C100.‍

A 1,500m3 invert was poured in 16 hours in September 2019 which included 50% Ecocem GGBS. ‍The tower’s foundation beams in C100 are made with concrete including 70% Ecocem ground slag.

The central core of the tower is engineered concrete with 40% Ecocem, pumped from the ground floor to a height of 200m. ‍The load bearing beams of the different levels are made with a concrete containing 50% Ecocem GGBS.

A reduction in 3,700 tonnes of CO2 was achieved by using Ecocem products for the construction of the Tour Hekla.[66]

The Kieldrech Lock, Antwerp, Belgium

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A photo of The Port of Antwerp in Belgium taken from above.
The Port of Antwerp in Belgium, where the Kieldrecht Lock is a feature.

The Kieldrecht Lock is the largest lock in the world: It is 500 metres long, 68 metres wide and up to 26 metres deep[67]. Due to the size of the lock, the Antwerp port is able to accommodate larger ships and products such as fruit, steel and coffee can be transported much faster and more sustainably[68].

A photo from outside of the Maastoren building in Rotterdam, Netherlands.
The Maastoren in Rotterdam, Netherlands.

The Maastoren, Rotterdam, Netherlands

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The Maastoren, built between 2006 and 2010, is a building in Rotterdam, Netherlands. At the time of its construction, it was the tallest building in the Netherlands with a height of 165 meters until the completion of the Zalmhaven Tower[69].

It is composed of 44 above ground stories and 2 below ground and is the current home of the Dutch branch of Deloitte.  

The River Suir Bridge, Waterford, Ireland

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In 2006, construction began on The River Suir Bridge, a cable-stayed bridge over the River Suir in Waterford, Ireland. It was built as part of the N25 Waterford Bypass, and opened to traffic on 19 October 2009, some ten months ahead of schedule.[70]

A photo of The River Suir Bridge in Waterford, Ireland taken from a bank on the river.
The River Suir Bridge in Waterford, Ireland

At the time of construction, the 230 metre main span of the bridge had the longest single bridge span in the Republic of Ireland.  

The concrete piers of the River Suir Bridge were constructed using 50% Ecocem GGBS, saving thousands of tonnes of CO2 and increasing the lifespan of the bridge. With the specification of 50% Ecocem GGBS in the concrete, the durability of the bridge was improved and made the concrete more resilient to attack and degradation. This is especially important given its proximity to the water from the River Suir.  

In 2009, the River Suir Bridge was chosen by the Irish Concrete Society as the Overall Winner in the ‘Infrastructure’ category.  

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  67. ^ "Kieldrecht lock, Belgium". Jan De Nul. Retrieved 2024-11-13.
  68. ^ "Antwerp, the port with the largest lock in the world". Visit Antwerpen. Retrieved 2024-11-14.
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  70. ^ "€500m Waterford by-pass opens". RTÉ.ie. 2009-10-19.
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