Hoffman green implements the application of 0% clinker decarbonated clay concrete (H-EVA) on a first site with Bouygues Construction and Chryso

2 June 22

Hoffmann Green Cement Technologies carried out the first pouring of 0% clinker decarbonated clay concrete
(H-EVA) on a construction site, thus completing two years of joint R&D with Bouygues Construction and Chryso as part of their partnership.

For the past two years, the research and development teams of the three companies have been working closely together to carry out specific technical tests to develop low-carbon concrete made from H-EVA cement. Unique and innovative, H-EVA cement has a formulation that does not contain a single gram of clinker and a carbon footprint that is four times smaller than that of traditional cement. This cement is based on an alkaline-based activated clay technology developed by Hoffmann Green and is available as a powder that can be stored in silos and is perfectly compatible with existing manufacturing processes. With a mechanical strength of up to 60 Megapascal at 28 days, its strong technical performance means that it can be used for all types of concrete applications in buildings and on roads.

Today, this partnership is gaining momentum and is leading to the launch of a first successful application on a building site, paving the way for future projects using H-EVA 0% clinker concrete.

With the launch of this H-EVA clay concrete on a large scale, Hoffmann Green is further diversifying its supply of co-products, which, as a reminder, is divided between clay (H-EVA), blast furnace slag (H-UKR and H-IONA), gypsum/desulfogypsum (H-P2A) and calcium sulfate (H-IONA).

Julien BLANCHARD and David Hoffmann, co-founders of Hoffmann Green Cement Technologies, said:
“The launch of the first projects using 0% clinker decarbonated clay concrete H-EVA is the result of close collaboration with the Bouygues Construction and Chryso teams, to whom we would like to extend our warmest thanks. Developed with long-standing and well-known companies in the construction sector and with unique technical and environmental characteristics, this new clay concrete will enable us to diversify our supplies of co-products and address more markets in favour of the decarbonisation of the construction sector.”

Christian Cremona, Bouygues Construction’s Materials and Structures R&D Director, explains:
“We are using materials with an ever-lower impact. Our partnership with Hoffmann Green Cement Technologies is part of the group’s answer to the major challenges of construction by controlling our impact on the environment.”

Bruno Pellerin, Chryso’s R&D Director, adds:
“At the heart of the H-EVA technology, clay is a material that is available almost everywhere in large quantities which advantages can be fully drawn thanks to very specific admixtures. Our range of admixtures CHRYSO®EnviroMix, and in this case EnviroMix ULC for ”Ultra Low Carbon”, has been developed to meet the requirements of low or very low carbon concrete. Through sustained investment in R&D over many years, we are committed to supporting our customers and partners in reducing the carbon footprint of their business. This partnership illustrates the key role of innovation in providing credible solutions to the new challenges facing the construction sector.”

Mob : +33 (0)6 19 07 64 74 | Email : [email protected]

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