117 documents found, page 1 of 12
Recovery paraffin wax waste as phase change material for application in cement ...
Cunha, Sandra Raquel Leite; Santos, Liliana; Aguiar, J. L. Barroso deThe European Union aims to achieve decarbonized and highly energy-efficient buildings by 2050. The con struction sector is a significant consumer of energy, natural raw materials and greenhouse gas emissions. Thus, the construction industry proves to be a highly promising sector regarding reducing the environmental impacts associated with these problems. The incorporation of phase change materials (PCM) in the ...
Eco-concrete with recycled aggregate functionalized with phase change materials...
Jia, Zhiyou; Cunha, Sandra Raquel Leite; Aguiar, J. L. Barroso de; Chen, BingWith urbanization and population growth, construction and demolition waste generate a significant environ mental burden. Recycling construction waste and utilizing clean energy sources are crucial for sustainable development. The recycled aggregates in this study are composed of various types of construction materials, such as concrete, bricks, ceramics, plastics, etc. This study modified the recycled aggregate...
Novel sustainable polymer-based phase change materials (PCMs) for mortars based...
Sarcinella, Antonella; Aguiar, J. L. Barroso de; Cunha, Sandra Raquel Leite; Frigione, MariaenricaA possible solution to reduce the consumption of fossil fuel and energy demand to power heating and cooling devices is represented by Phase Change Materials (PCMs). They can absorb, store and release energy according to their physical state that changes with the environmental temperature. In this work, novel eco-sustainable PCMs were developed through the form-stable method. Through this process, it was possibl...
The effect of activation methods on the mechanical properties of cement mortars...
Kaptan, Kubilay; Cunha, Sandra Raquel Leite; Aguiar, J. L. Barroso deThe use of recycled powder (RP) derived from construction and demolition waste (CDW)has several benefits, including the conservation of natural aggregate supplies, the preservation of land designated as landfills, and the promotion of a sustainable built environment. Partially substituting cement with RP generated from concrete-based waste can significantly reduce the carbon footprint of the construction indust...
Assessment of the efficiency of mechanical grinding and calcination processes f...
Cunha, Sandra Raquel Leite; Kaptan, Kubilay; Hardy, Erwan; Aguiar, J. L. Barroso deReducing carbon dioxide emissions is a key priority in the European Union, which aims to achieve carbon neutrality by 2050. The constructionConstruction has a key role to play in this effort, as it is responsible for a significant proportion of greenhouse gas emissions, especially due to the cement production. At the same time, waste reuse emerges as a key strategy within the circular economy, another pillar of...
Sustainable organic phase change materials for sustainable energy efficiency so...
Sarcinella, Antonella; Cunha, Sandra Raquel Leite; Aguiar, Ingried; Aguiar, J. L. Barroso de; Frigione, MariaenricaThe growing demand for sustainable energy solutions has intensified research on phase change materials (PCMs) due to their ability to efficiently store and release thermal energy. However, traditional PCMs are often made from petroleum-derived materials or rely on processes that pose environmental concerns. The aim of this work is therefore to explore the development and use of sustainable organic PCMs, in part...
Enhancing the durability of concrete with construction and demolition waste agg...
Jia, Zhiyou; Cunha, Sandra Raquel Leite; Aguiar, J. L. Barroso de; Shi, CaijunIncorporating construction and demolition waste aggregate (DW) into concrete addresses environmental con cerns by reducing the demand for virgin materials and diverting waste from landfills. However, the high porosity of DW negatively impacts the durability of concrete. In this work, DW was functionalized by impregnating it with paraffin to fill its inherent pores. Additionally, the phase change characteristics...
Performance of concrete with demolition waste and PCM under high temperature ra...
Jia, Zhiyou; Cunha, Sandra Raquel Leite; Aguiar, J. L. Barroso de; Chen, BingConcrete is considered an incombustible material, however, the investigation of the strength behavior under high-temperature (fire) conditions is crucial for assessing the safety impact on structures. Additionally, pure paraffin (PP), as the most common phase change material (PCM), was used in construction materials. In this work, the functionalization of demolition waste (DW) was prepared through absorption of...
Application of foundry wastes in eco-efficient construction materials: a review
Aguiar, Ingried; Cunha, Sandra Raquel Leite; Aguiar, J. L. Barroso deFoundries generate millions of tons of waste annually, posing a challenge to companies that generate it and to the environment due to landfill disposal. Meanwhile, the construction sector contributes heavily to global resource consumption. Adopting a circular economy approach by integrating foundry wastes into construction materials offers two main benefits: reducing landfill accumulation and preserving natural...
Cement mortars with incorporation of foundry industry wastes: physical, mechani...
Cunha, Sandra Raquel Leite; Silva, Raphael; Aguiar, J. L. Barroso dePlanet Earth is facing real challenges that require urgent and significant measures. It is necessary to give a new direction to the construction sector, making it essential to change the way that raw material is selected, giving preference to industrial by-products. The utilization of industrial wastes allows minimize the high consumption of natural raw materials, energy consumption and waste deposition in land...