Exploració per tema "Sulfats"
Ara es mostren els items 1-15 de 15
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Analysis of ettringite attack to stabilized railway bases and embankments
(2013)
Comunicació de congrés
Accés restringit per política de l'editorialTwo cases of massive sulphate attack to cement treated embankments and track bases in a high speed railway line are described. In the first case, two large access embankments to a railway viaduct were treated with jet–grouting ... -
Analysis of massive sulphate attack to cement-treated compacted soils
(E3S Web of Conferences, 2020)
Text en actes de congrés
Accés obertThe paper describes the heave experienced by two embankments providing access to a bridge located in a high-speed railway line. The compacted soil, a mixture of a low plasticity clay, sand and gravel, had a significant ... -
Assessing main process mechanism and rates of sulfate reduction by granular biomass fed with glycerol under sulfidogenic conditions
(2022-01-01)
Article
Accés obert -
Determinación del origen de los sulfatos disueltos en las aguas de La Cuenca del LLobregat en el Bages
(2013)
Comunicació de congrés
Accés obertAlgunos cursos fluviales de la cuenca del Llobregat, a su paso por el Bages presentan un elevado contenido en sales y sulfatos. El presente estudio se centra en la determinación del origen de los sulfatos disueltos en las ... -
Effects of an internal sulfate attack and an alkali-aggregate reaction in a concrete dam
(2018-03)
Article
Accés obertThe alkali-aggregate reaction and the internal sulfate attack are two chemical reactions that lead to expansions in concrete structures. The former is one of the main causes of expansions in concrete dams and has been ... -
Effects of sulfate and nitrate on the taste of water: a study with a trained panel
(2017-12-01)
Article
Accés restringit per política de l'editorialThe role of sulfate and nitrate in the taste of drinking water is not entirely clear. Taste threshold concentrations (TTCs) were estimated for these two species by the 3-AFC method by a trained panel, as sodium and calcium ... -
Evolution of pyrrhotite oxidation in aggregates for concrete
(2014-11-17)
Article
Accés obertRocks containing pyrrhotite bands are sometimes used to produce concrete. These rocks oxidize and produce long-term expansive reactions that damage concrete structures, leading to important economic and risk related ... -
Experimental investigation of nanofiltration for the removal of high sulphate concentration from groundwater for drinking water production and assessment of options for the concentrate treatment
(Universitat Politècnica de Catalunya / Rheinisch-Westfälische Technische Hochschule Aachen, 2008)
Projecte/Treball Final de Carrera
Accés restringit per acord de confidencialitat -
External sulfate attack in dam concretes with thaumasite formation
(Instituto Técnico de la Construcción y del Cemento, 2015-01)
Article
Accés obertConcrete core samples extracted from different areas of the Mequinenza Dam (Spain) have been studied and expansive reactions affecting the structure were not found. However, expansive reactions in the concrete of certain ... -
Fenómenos de expansión en estribos
(2010)
Text en actes de congrés
Accés restringit per política de l'editorial -
Implementation of a continuous reactor for zinc hydrosulphite synthesis: experimental characterization and multiphysics modelling
(Universitat Politècnica de Catalunya, 2024)
Projecte Final de Màster Oficial
Accés restringit per acord de confidencialitat
Realitzat a/amb: Université de Liège -
Liquid-liquid separation of nickel and cobalt by using versatic acid 10 + PRIMENE 81-R in sulphate medium
(Universitat Politècnica de Catalunya, 2017-10)
Treball Final de Grau
Accés obert
Realitzat a/amb: Schneider ElectricUnit mass transfer operations gather lots of different techniques to separate compounds. These, are based on the exploiment of different physical and chemical properties of the compounds involved. One of these operations ... -
Sulfate resistance of blended cements (limestone illite calcined clay) exposed without previous curing
(2020)
Text en actes de congrés
Accés obertDurability in aggressive environments is an important factor to extend the service life of concrete and the use ternary blended cements (limestone filler + calcined clays) can contribute to this purpose. In sulfate ... -
Sulphate attack and the role of thaumasite in historical constructions
(Universitat Politècnica de Catalunya, 2008-07)
Projecte Final de Màster Oficial
Accés obertGran parte de construcciones históricas importantes se encuentran en el centro de grandes ciudades, y en ocasiones próximas a la industria y por ello en contacto con áreas que presentan una atmósfera rica en sulfatos, ... -
Sulphur isotopic composition of volcanic gases from Poás and Turrialba volcanoes, Costa Rica
(2015)
Comunicació de congrés
Accés obert