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A new mix design methodology for recycled aggregate concrete by combining experimental and numerical approaches

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An important step towards a sustainable development in the concrete industry and management of construction waste is to use recycled aggregates (RA) as a viable alternative to the natural one. However, how to formulate and optimize the concrete mixture made of recycled aggregates at an acceptable price and quality is still a question mark. The major difficulty is due to the variability of the aggregate properties, and the lack of a robust methodology able to accurately evaluate the mechanical performance of the recycled concrete. Read More

Use of recycled aggregates for cement production

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Recycled Aggregates (RA) from Construction and Demolition Waste (CDW) contain natural aggregates, hardened cement paste but also masonry, plaster, etc. Part of these recycled aggregates are hardly suitable for concrete production due to their water absorption (cement paste porosity, clays) and reactivity (sulphate or alkalis release, etc.). RA incorporation in Portland cement raw meal is a possible way to use these recycled aggregates and consequently avoid landfill. Read More

‘Circular Netherlands in 2050’ – An Impetus for Secondary Raw Materials in the Construction Industry

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Construction is an important sector in the Dutch economy, accounting for almost 7% of the Gross Domestic Product and providing employment for 458,000 people. Every year the Dutch construction sector consumes 250 million tons or 50 percent of raw materials in the Netherlands. At the same time it produces 23 million tons of demolition waste of which 97% are recovered, mostly for use under the road surface. Read More

Circular Business Models for SeRaMCo

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Research which aims at having long-term societal impact not only needs knowledge and curiosity but also business potential. In this sense, an important part of the Work Package “Long-term effects” of the European INTERREG project SeRaMCo – Secondary Raw Materials for Concrete Precast Products – is the development of business models. Read More

Development of recycled concrete mixtures in Luxembourg

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As one of the partner universities, the University of Luxembourg is actively working on the SeRaMCo project in different aspects: (i) technical features on the design of new concrete mixtures and elements, and (ii) a continuous overview of the market situation in Luxembourg through several stakeholders. More specifically, in the technical aspect of the project (containing three different work packages), the University of Luxembourg’s role is mainly in work package 2 (developing new cement and concrete mixes for use of recycled materials) and in work package 3 (generating and implementing innovative cement and concrete products based on recycled aggregates). Read More