51 documents found, page 1 of 6
Analysis of the chemical properties of almond and walnut shells for use in eart...
Nouioua, T.; Marchiori, L.; Albuquerque, António; Silva, Flora; 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...
The application of soil erosion models of an agroforestry basin under Mediterra...
Leite, Ana Paula; Duarte, A.C.; Marchiori, Leonardo; Morais, Maria Vitoria; Studart, André; Cavaleiro, VictorSoil erosion has been causing an imbalance in nature and the environment. It is mainly caused naturally but is also due to human interventions leading to desertification and possible contamination. Therefore, engineering, geography, and cartography have been allies in applying erosion models to predict, address, and remediate the impacts. Therefore, the Revised Universal Soil Loss Equation (RUSLE) and Soil and ...
Caracterização físico-química de cascas de amêndoas e nozes para valorização em...
Marchiori, Leonardo; Nouioua, Thamer; Morais, Maria Vitoria; Silva, Flora; Albuquerque, António; Pais, Luís Andrade; 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...
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 ...
New Methodology for Rocks’ Geomechanical Characterization with Schmidt Sclerometer
Cavaleiro, Victor; Marchiori, Leonardo; Morais, Maria Vitoria; Marchi Oliveira, Gabriel; Cocchiarale, MarcelaHardness is a parameter that gives information about the behavior of rocks when subjected to certain deformations. Various non-destructive tests are available for hardness quantification, the use of the Schmidt Sclerometer is the most used due its expedition, among existing sclerometers, the Schmidt rebound hammer, type N-34, with an impact energy equal to 2,207 N.m (0.225 Kgm) was selected for experimental tes...
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...