Paris, France
Paris, France

Lafarge is a French industrial company specialising in four major products: cement, construction aggregates, concrete and gypsum wallboard. In 2010 the company was the world's second-largest cement manufacturer by mass shipped behind Holcim. Wikipedia.


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The invention relates to a method for producing an insulating composite block comprising a mineral foam, said method comprising the following steps: a. providing a block comprising at least one cell having walls which are either sufficiently humid or consist of a water-repellent material, and b. filling said cell with a mineral foam that does not substantially comprise any calcium aluminate. The invention also relates to an insulating composite block comprising a block, said block comprising at least one cell having walls optionally comprising a water-repellent material, said cell being filled with a mineral foam that does not substantially comprise any calcium aluminate.


Patent
Lafarge | Date: 2017-02-01

The invention relates to a hydraulic binder comprising a belite sulfoaluminate clinker and silica having a BET specific surface area in nitrogen of at least 50 m/g, the quantity of silica being lower than or equal to 5%, said percentage being expressed as a mass percentage in relation to the mass of the binder.


A concrete having a smooth surface, which is wholly or partly coated with a polymer film obtained by polymerisation under the action of radiation, where the film is itself wholly or partly coated with a thin photovoltaic film.


Patent
Lafarge | Date: 2017-04-12

The invention concerns a method for producing a mineral foam comprising the following steps: (i) independently preparing a cement slurry and an aqueous foam, the cement slurry being prepared by mixing water E and cement C, the cement C comprising a soluble equivalent quantity x of Na2O, x being expressed by weight for 100 parts cement, said slurry having a ratio x / (E/C) less than or equal to 1,75, E/C being expressed by weight, and the particles of cement C having a size distribution such that the particle size distribution ratio dmax(h/2)/dmin(h/2) is between 5 and 25; (ii) bringing the cement slurry into contact with the aqueous foam in order to obtain a foamed cement slurry; and (iii) shaping the foamed cement slurry obtained in step (ii) and allowing setting to take place.


Patent
Lafarge | Date: 2017-04-26

The invention relates to a novel non-self-levelling, ultra-high performance hydraulic composition that can be used to produce concrete parts in a single step, regardless of the shape or cross-section of the part and without requiring an assembly step.


The present invention relates to a hydraulic binder containing, in wt%: - 20% to 82% Portland cement, the particles of which have a D50 from 2 m to 11 m; - 15% to 56% of a non-pozzolanic mineral additive A1, the particles of which have a D50 from 1 m to 150 m, said additive being selected from limestone additives such as calcium carbonate, silica additives such as quartz, silica/limestone mineral additives, calcined shales, zeolites, burnt plant ash, and the mixtures thereof; and - 4% to 30% of a pozzolanic mineral additive A2, the particles of which have a D50 between 1 and 150 m. The sum of said percentages is between 90% and 100%.


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: WASTE-3-2014 | Award Amount: 7.67M | Year: 2015

EU28 currently generates 461 million tons per year of ever more complex construction and demolition waste (C&DW) with average recycling rates of around 46%. There is still a significant loss of potential valuable minerals, metals and organic materials all over Europe. The main goal of HISER project is to develop and demonstrate novel cost-effective technological and non-technological holistic solutions for a higher recovery of raw materials from ever more complex C&DW, by considering circular economy approaches throughout the building value chain (from the End-of-Life Buildings to new Buildings). The following solutions are proposed: - Harmonized procedures complemented with an intelligent tool and a supply chain tracking system, for highly-efficient sorting at source in demolition and refurbishment works. - Advanced sorting and recycling technologies for the production and automated quality assessment of high-purity raw materials from complex C&DW. - Development of optimized building products (low embodied energy cements, green concretes, bricks, plasterboards and gypsum plasters, extruded composites) through the partial replacement of virgin raw materials by higher amounts of secondary high-purity raw materials recovered from complex C&DW. These solutions will be demonstrated in demolition projects and 5 case studies across Europe. Moreover, the economic and environmental impact of the HISER solutions will be quantified, from a life cycle perspective (LCA/LCC), and policy and standards recommendations encouraging the implementation of the best solutions will be drafted. HISER will contribute to higher levels of recovered materials from C&DW from 212 Mt in 2014, to 359 Mt in 2020 and 491 Mt by ca. 2030, on the basis of the increase in the recovery of aggregates, from 40% (169 Mt) to more than 80% (394 t) and wood, from 31% (2.4 Mt) to 55% (5 Mt);. Similarly, unlocking valuable raw materials currently not exploited is foreseen, namely some metals and emerging flows.


Grant
Agency: European Commission | Branch: H2020 | Program: IA | Phase: SPIRE-03-2016 | Award Amount: 8.30M | Year: 2016

Europes position in the production of biochemicals from biomass and by-products is limited to a few compounds, while their demand is among the largest in the world. However, Europe has a lot of world leader chemical companies. On the other hand, lignocellulosic waste constitutes one of the most abundant resources without competing with food chain. REHAPs 16 partners aim at revalorizing agricultural (wheat straw) and forestry (bark) waste through its recovery, and primary (sugars, lignin, tannins) and secondary (sugar acids, carboxylic acids, aromatics and resins) processing to turn them into novel materials, and considering Green Building as business case. The project will provide reductions in utilization of fossil resources of 80-100%, and energy utilization and CO2 emissions above 30%. Specifically, building blocks (1,4 and 2,3-Butanediol, estherpolyols), materials (PUs, phenolic resins, modified hydrolysis lignin) and products (wooden boards, insulation foams, cement, adhesive) will be obtained: Isolation of tannins and carbohydrates from forestry waste to turn them into bio-phenolic resins for wooden panels and isocyanate-free polyurethanes (PU) for insulating foams, respectively. Isolation of lignin and carbohydrates from agricultural waste to turn them into bio-phenolic resins for wooden panels and biosuperplasticizers for cement, and estherpolyol PU for adhesives, respectively. Fire retardant lignin and sugar-based additives will be also developed. Developed processing technologies (chemo/thermo/enzymatic and fermentation) will be optimized at pilot scale (TRL6-7) for further exploitation and replication of results. All products will be integrated in a prototype to demonstrate industrial applicability into the Green Construction sector. Throughout the project, Life Cycle and Cost Assessment, market analysis, business plan, waste management strategy and measures for future standardization will be implemented using a systemic perspective approach.


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: FOF-01-2016 | Award Amount: 4.80M | Year: 2016

Advanced Manufacturing has been highlighted by the EU as one of the key enablers to support and promotion of business research and innovation in key enabling technologies. Therefore, a number of objectives, aligned with pursuing the large scale targets, have been set for advanced manufacturing through four pillars: technology, economic, social and environment. Thus, HINDCON project aims to adapt manufacturing technologies to the construction sector, advancing towards industrialisation and overcoming the limitations of actual approach for introducing Additive and Subtractive Manufacturing in construction activities. The project has a duration of 36 months. The main aim of the HINDCON project is to develop and demonstrate a hybrid machine regarding 3D printing technologies with concrete materials focused on the industrialization of the Construction Industry, delivering to this sector an innovative technology that reduces environmental impact at the same time it reduces dramatically economic costs. The collaborative structure of the project will help to: 1) Integrate different technologies that converge in a hybrid solution. HINDCON all-in-one machine will integrate Additive Manufacturing concrete extruder and Subtractive Manufacturing tool kit with the use of cementitious materials including mass materials with alternatives in concrete and additives, and reinforced with composites. 2) Cover the different aspects concerned (technology, economic, social and environment) and demonstrate the hybrid machine from different perspectives. On the one hand, it includes testing basic capabilities of the integrated prototype in laboratory. On the other hand, it involves the demonstration of the manufacturing system in a relevant environment.


Concrete is the most widely used man-made material on Earth, with an annual consumption of around 10 billion m. However, its fabrication is characterized by total CO2 emissions amounting to around 5% of the worldwide anthropogenic GHG emissions. More sustainable cements with lower embodied energy and CO2 footprint are needed. As stated in the European Directive on Energy Performance of Buildings (COM 2010/31/EU), the development of better performing insulation materials and lightweight systems for building envelopes is crucial, playing a significant role in the reduction of buildings operational energy while complying with the load bearing features of existing building structures. The ECO-binder project aims to implement industrial R&D activities on the results of previous research, demonstrating the possibility of replacing Ordinary Portland Cement (OPC) and OPC based concrete products with new ones based on the new Belite-Yeelimite-Ferrite (BYF) class of low-CO2 binders to develop a new generation of concrete-based construction materials and prefabricated building envelope components with more than 30% lower embodied energy, 20% improved insulation properties and 15% lower cost than the actual solutions based on Portland cement. The new building envelope solutions will integrate multiple functions in a single product package, providing the higher performances in terms of acoustic insulation/absorption, fire resistance, dimensional stability, indoor air quality optimization, at an affordable cost. Demonstration of full-scale retrofitting and construction will be performed prototyping and installing a family of prefabricated concrete systems of different complexity and end-use in four different climatic conditions involving public authorities.. Results will be validated through dedicated LCAs, fostering the construction materials sector progress towards increased performing and eco-sustainable products.

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