43 documents found, page 1 of 5
Cracking and desiccation of water treatment sludge for incorporation into soils...
Marchiori, Leonardo; Morais, Maria Vitoria; Albuquerque, Antonio; Ferreira-Gomes, L.M.; Cavaleiro, VictorCracks may lead to hydraulic failure in soils due to increase of hydraulic conductivity which facilitate water infiltration, impacting negatively for liner materials. Therefore, cracking and desiccation investigation on liner material is advised. Water treatment sludge (WTS) is a by-product resulting from water treatment plants, and it seems to be suitable for geotechnical applications and soil replacement due ...
Valorização de cinzas de biomassa vegetal para aplicações geotécnicas
Marchiori, Leonardo; Studart, André; Morais, Maria Vitoria; Albuquerque, Antonio; Andrade Pais, Luís; Boscov, Maria Eugenia Gimenez; Cavaleiro, VictorAs cinzas de biomassa vegetal (CBV) têm sido intensamente estudadas para incorporação em solos em obras de terra. Este trabalho tem como objetivo caracterizar química e geotecnicamente cinzas de pinheiros e oliveiras em comparação com um solo de Castelo Branco (Portugal), com a finalidade de aplicações geotécnica. Avaliações físicas, mineralógicas e químicas são necessárias para investigar a origem dos materiai...
Environmental-chemical compatibility of granitic-mining waste for liner material
Marchiori, Leonardo; Studart, André; Morais, Maria Vitoria; Albuquerque, Antonio; Andrade Pais, Luís; Cavaleiro, VictorMining waste is generated from extracting mineral resources and, without proper disposal, can lead to negative environmental impacts because it can contain pollutants. Emerging studies of alternatives valorizing and reusing the residue through sustainable practices. Therefore, this research investigated the potential of granitic mining waste for waterproof liner materials, considering that most used liners, cla...
Geotechnical Characterization of Vegetal Biomass Ashes Based Materials for Line...
Marchiori, Leonardo; Studart, André; Morais, Maria Vitoria; Albuquerque, Antonio; Cavaleiro, VictorThis paper aims to evaluate geotechnically, chemically, mechanically, and hydraulically parameters of vegetal-based biomass ashes (VBA) and its soil incorporation with different ratios as potential liner material and soils strengthening. Composites were developed for testing with different ratios of VBA: soil, following 05:95, 10:90, 15:85, and 20:80%. All laboratorial testing program followed European standard...
Analysis of the chemical properties of almond and walnut shells for use in eart...
Nouioua, Thamer; Marchiori, Leonardo; Albuquerque, Antonio; Silva, Flora Cristina Meireles; Pais, Luís Andrade; Cavaleiro, VictorAlmond (AS) and walnut shells (WS) have attracted the interest of scientific community due to the possibility of developing innovative eco-friendly materials. This work aims to analyze the chemical characteristics of AS, WS, a residual granitic soil (RGS) and two mix-tures of waste:soil (10:90% and 40:60%) for evaluating their compatibility for earthworks application. Results show that both wastes could be inco...
Water Treatment Sludge as Geotechnical Liner Material: State-of-Art
Marchiori, Leonardo; Albuquerque, Antonio; Cavaleiro, VictorThe periodical cleaning of the decanters at the plant generates solid wastes called water treatment sludges (WTS), a chemical compound similar to aluminum silicates. WTS’s properties have been studied for geotechnical purpose and it seems to be suitable for producing liner materials for landfills, dams, ponds, and lagoons which store and prevent soil’s infiltration of residues. Liners are usually shaped of soil...
Caracterização físico-química de cascas de amêndoas e nozes para valorização em...
Marchiori, Leonardo; Nouioua, Thamer; Morais, Maria Vitoria; Silva, Flora Cristina Meireles; Albuquerque, Antonio; Andrade Pais, Luís; Cavaleiro, VictorOs resíduos agroindustriais têm sido investigados para aplicações de engenharia devido à sua elevada produção e ausência de valorização adequada face aos requisitos legais e de políticas e metas de sustentabilidade. O estudo das caraterísticas das cascas de amêndoas (CA) e nozes (CN) têm suscitado interesse na comunidade científica para desenvolver materiais alternativos e inovadores, com design sustentável, em...
Energy Harvesting Opportunities in Geoenvironmental Engineering
Marchiori, Leonardo; Morais, Maria Vitoria; Studart, André; Albuquerque, Antonio; Andrade Pais, Luís; Ferreira Gomes, L.M.; Cavaleiro, VictorGeoenvironmental engineering involves defining solutions for complex problems, such as containment systems management, contaminant transport control, wastewater management, remediation of contaminated sites and valorization of geomaterials and wastes. In the last years, energy harvesting (EH)—or energy scavenging—methods and technologies have been developed to reduce the dependence on traditional energy sources...
Geotechnical Characterization Methodology of Water Treatment Sludge for Product...
Marchiori, Leonardo; Morais, Maria Vitoria; Albuquerque, Antonio; Cavaleiro, VictorClayey soils and geosynthetic materials are used as low hydraulic conductivity layers and environmental protection barriers in civil engineering works for storing wastes as covering and bottom impermeabilization layer structures, known as liners. Future shortage of clay materials and geosynthetic’s high costs are usual problems, aligned with the need of prevention of environmental impacts associated to wastes b...
Mechanical and Chemical Behaviour of Water Treatment Sludge and Soft Soil Mixtu...
Marchiori, Leonardo; Studart, André; Albuquerque, Antonio; Andrade Pais, Luís; Boscov, Maria Eugenia Gimenez; Cavaleiro, VictorBackground: Clay-based and geosynthetic liners are generally used as hydraulic barriers in solid waste disposal facilities, mining tailing ponds, and soil-based wastewater treatment technologies, avoiding the leaching of hazardous compounds into subsoil and groundwater. Water treatment sludge (WTS) is a water treatment plant (WTP) residue which due to hydraulic properties seems to decrease the permeability in W...