The construction sector uses high quantities of raw materials and consequently the demolition sec... more The construction sector uses high quantities of raw materials and consequently the demolition sector generates huge amounts of waste. Envisioning the future of the construction sector, new Circular Economy Business Models should be implemented to contribute to the development of the sector. These Business Models will be based on innovative recycling techniques able to provide the technical requirements of the construction materials. This work aims to valorize ceramic and concrete wastes as aggregates for the mortar manufacturing. The chemical composition of these materials with high proportion of silica and very low quantities of sulfates makes them appropriate for their application. The wastes were previously crushed to the required particle size (6mm). The crushed ceramic waste presents an important fines proportion, which will increase the water consumption in the mortar mixes.
The inhibitory effect of the hydrophobic layer on the surface of copper in an acidic medium was s... more The inhibitory effect of the hydrophobic layer on the surface of copper in an acidic medium was studied by the classical potentiodynamic method and the impedance spectroscopy method. The hydrophobic character of the copper surface was achieved by immersing the sample in ethanolic octadecanoic acid with and without the addition of dog rose oil extract. The selected concentrations of the added dog rose oil extract were 0.5, 1.0, and 2.0 wt% in 0.05 molL-1 alcoholic solution of octadecanoic acid. Based on electrochemical measurements, an inhibition effect of ≈ 65% was obtained when the surface was modified by immersion in ethanolic octadecanoic acid only. With the addition of dog rose oil extract, this value increased to over 90%, depending on the concentration of dog rose oil extract added. 2 5 TH INTERNATIONAL CONFERENCE ON TECHNOLOGIES & BUSINESS MODELS FOR CIRCULAR ECONOMY: CONFERENCE PROCEEDINGS.
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
The construction sector uses high quantities of raw materials and consequently the demolition sec... more The construction sector uses high quantities of raw materials and consequently the demolition sector generates huge amounts of waste. Envisioning the future of the construction sector, new Circular Economy Business Models should be implemented to contribute to the development of the sector. These Business Models will be based on innovative recycling techniques able to provide the technical requirements of the construction materials. This work aims to valorize ceramic and concrete wastes as aggregates for the mortar manufacturing. The chemical composition of these materials with high proportion of silica and very low quantities of sulfates makes them appropriate for their application. The wastes were previously crushed to the required particle size (6mm). The crushed ceramic waste presents an important fines proportion, which will increase the water consumption in the mortar mixes.
5th International Conference on Technologies & Business Models for Circular Economy: Conference Proceedings, Jan 30, 2023
The inhibitory effect of the hydrophobic layer on the surface of copper in an acidic medium was s... more The inhibitory effect of the hydrophobic layer on the surface of copper in an acidic medium was studied by the classical potentiodynamic method and the impedance spectroscopy method. The hydrophobic character of the copper surface was achieved by immersing the sample in ethanolic octadecanoic acid with and without the addition of dog rose oil extract. The selected concentrations of the added dog rose oil extract were 0.5, 1.0, and 2.0 wt% in 0.05 molL-1 alcoholic solution of octadecanoic acid. Based on electrochemical measurements, an inhibition effect of ≈ 65% was obtained when the surface was modified by immersion in ethanolic octadecanoic acid only. With the addition of dog rose oil extract, this value increased to over 90%, depending on the concentration of dog rose oil extract added. 2 5 TH INTERNATIONAL CONFERENCE ON TECHNOLOGIES & BUSINESS MODELS FOR CIRCULAR ECONOMY: CONFERENCE PROCEEDINGS.
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
We live in a material world where the markets are flooded with all kinds of products. At the same... more We live in a material world where the markets are flooded with all kinds of products. At the same time, we are facing a population growth, as well as a product demand growth. But, are we aware of the raw materials needed for our favourite daily products? In which part of the world are they extracted? Do we recognize the value chains from the mine to the product? And, where do these products end up after we use them? Many school curriculums include this topic only briefly, thus there is a need to raise awareness among youngsters about mining and raw materials in general. EIT RawMaterials funded by the European Commission, is the largest community dealing with raw materials in Europe. One of its main objectives is to raise awareness among general public about the raw materials and their indispensability, about the consequences of their uses, about the mining and production systems as well as about the utilization and recycling. Innovative and attractive pathways are employed in the pr...
The municipal sector and different industries, including construction and demolition activities i... more The municipal sector and different industries, including construction and demolition activities in urban areas, generate waste streams that could provide excellent secondary raw materials (SRM) to replace traditional raw materials in construction applications. The CINDERELA project develops a business model (CinderCEBM) aided by a one-stop-shop (CinderOSS) service to help construction companies increase profit and deliver value by using SRM from urban waste streams in building and civil engineering applications. The model and the platform will be tested in different socio-economic environments to ensure technological, systemic and economic viability across Europe through demonstrations involving manufacturing and construction with the use of SRM-based materials supported by building information modelling (BIM) and advanced solutions combining disruptive technologies (3D printing) and SRM cascading recycling systems (phosphorus extraction from wastewater prior to sewage sludge use in...
Mining activity is the second biggest producer of waste in the European Union (EU), so to develop... more Mining activity is the second biggest producer of waste in the European Union (EU), so to develop processes that allow the reuse of waste and the consequent creation of markets for these secondary raw materials are relevant for a desirable transition to a circular economy. Copper waste such as cakes, tailings, pyrite roasting residues, or slags present very different physical characteristics and hazards. There are two important aspects to consider for the residue of hazardous determination and its reuse: the particle size and the leaching behavior. Also, the reactive or non-reactive property of the waste depends on their origin, which is important for new applications. Based on these parameters (and other specifics for each application), the intention of this paper is to review and study the different applications of copper residues, aiming for new possibilities of cement-based construction materials with added value that allow to economically justify the use of cement.
The construction sector uses high quantities of raw materials and consequently the demolition sec... more The construction sector uses high quantities of raw materials and consequently the demolition sector generates huge amounts of waste. Envisioning the future of the construction sector, new Circular Economy Business Models should be implemented to contribute to the development of the sector. These Business Models will be based on innovative recycling techniques able to provide the technical requirements of the construction materials. This work aims to valorize ceramic and concrete wastes as aggregates for the mortar manufacturing. The chemical composition of these materials with high proportion of silica and very low quantities of sulfates makes them appropriate for their application. The wastes were previously crushed to the required particle size (6mm). The crushed ceramic waste presents an important fines proportion, which will increase the water consumption in the mortar mixes.
The inhibitory effect of the hydrophobic layer on the surface of copper in an acidic medium was s... more The inhibitory effect of the hydrophobic layer on the surface of copper in an acidic medium was studied by the classical potentiodynamic method and the impedance spectroscopy method. The hydrophobic character of the copper surface was achieved by immersing the sample in ethanolic octadecanoic acid with and without the addition of dog rose oil extract. The selected concentrations of the added dog rose oil extract were 0.5, 1.0, and 2.0 wt% in 0.05 molL-1 alcoholic solution of octadecanoic acid. Based on electrochemical measurements, an inhibition effect of ≈ 65% was obtained when the surface was modified by immersion in ethanolic octadecanoic acid only. With the addition of dog rose oil extract, this value increased to over 90%, depending on the concentration of dog rose oil extract added. 2 5 TH INTERNATIONAL CONFERENCE ON TECHNOLOGIES & BUSINESS MODELS FOR CIRCULAR ECONOMY: CONFERENCE PROCEEDINGS.
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
The construction sector uses high quantities of raw materials and consequently the demolition sec... more The construction sector uses high quantities of raw materials and consequently the demolition sector generates huge amounts of waste. Envisioning the future of the construction sector, new Circular Economy Business Models should be implemented to contribute to the development of the sector. These Business Models will be based on innovative recycling techniques able to provide the technical requirements of the construction materials. This work aims to valorize ceramic and concrete wastes as aggregates for the mortar manufacturing. The chemical composition of these materials with high proportion of silica and very low quantities of sulfates makes them appropriate for their application. The wastes were previously crushed to the required particle size (6mm). The crushed ceramic waste presents an important fines proportion, which will increase the water consumption in the mortar mixes.
5th International Conference on Technologies & Business Models for Circular Economy: Conference Proceedings, Jan 30, 2023
The inhibitory effect of the hydrophobic layer on the surface of copper in an acidic medium was s... more The inhibitory effect of the hydrophobic layer on the surface of copper in an acidic medium was studied by the classical potentiodynamic method and the impedance spectroscopy method. The hydrophobic character of the copper surface was achieved by immersing the sample in ethanolic octadecanoic acid with and without the addition of dog rose oil extract. The selected concentrations of the added dog rose oil extract were 0.5, 1.0, and 2.0 wt% in 0.05 molL-1 alcoholic solution of octadecanoic acid. Based on electrochemical measurements, an inhibition effect of ≈ 65% was obtained when the surface was modified by immersion in ethanolic octadecanoic acid only. With the addition of dog rose oil extract, this value increased to over 90%, depending on the concentration of dog rose oil extract added. 2 5 TH INTERNATIONAL CONFERENCE ON TECHNOLOGIES & BUSINESS MODELS FOR CIRCULAR ECONOMY: CONFERENCE PROCEEDINGS.
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
We live in a material world where the markets are flooded with all kinds of products. At the same... more We live in a material world where the markets are flooded with all kinds of products. At the same time, we are facing a population growth, as well as a product demand growth. But, are we aware of the raw materials needed for our favourite daily products? In which part of the world are they extracted? Do we recognize the value chains from the mine to the product? And, where do these products end up after we use them? Many school curriculums include this topic only briefly, thus there is a need to raise awareness among youngsters about mining and raw materials in general. EIT RawMaterials funded by the European Commission, is the largest community dealing with raw materials in Europe. One of its main objectives is to raise awareness among general public about the raw materials and their indispensability, about the consequences of their uses, about the mining and production systems as well as about the utilization and recycling. Innovative and attractive pathways are employed in the pr...
The municipal sector and different industries, including construction and demolition activities i... more The municipal sector and different industries, including construction and demolition activities in urban areas, generate waste streams that could provide excellent secondary raw materials (SRM) to replace traditional raw materials in construction applications. The CINDERELA project develops a business model (CinderCEBM) aided by a one-stop-shop (CinderOSS) service to help construction companies increase profit and deliver value by using SRM from urban waste streams in building and civil engineering applications. The model and the platform will be tested in different socio-economic environments to ensure technological, systemic and economic viability across Europe through demonstrations involving manufacturing and construction with the use of SRM-based materials supported by building information modelling (BIM) and advanced solutions combining disruptive technologies (3D printing) and SRM cascading recycling systems (phosphorus extraction from wastewater prior to sewage sludge use in...
Mining activity is the second biggest producer of waste in the European Union (EU), so to develop... more Mining activity is the second biggest producer of waste in the European Union (EU), so to develop processes that allow the reuse of waste and the consequent creation of markets for these secondary raw materials are relevant for a desirable transition to a circular economy. Copper waste such as cakes, tailings, pyrite roasting residues, or slags present very different physical characteristics and hazards. There are two important aspects to consider for the residue of hazardous determination and its reuse: the particle size and the leaching behavior. Also, the reactive or non-reactive property of the waste depends on their origin, which is important for new applications. Based on these parameters (and other specifics for each application), the intention of this paper is to review and study the different applications of copper residues, aiming for new possibilities of cement-based construction materials with added value that allow to economically justify the use of cement.
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