Exploració per autor "Alonso Pérez de Agreda, Eduardo"
Ara es mostren els items 83-102 de 214
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Gas migration in sand/bentonite mixtures through preferential paths
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialSand/bentonite mixtures are considered as buffer material in low and medium radioactive waste disposal schemes. While the bentonite provides low permeability and swelling capacity, the sand is intended to improve mechanical ... -
Gypsum crystal growth in tunnels
(CRC Press. Taylor & Francies Group, 2011)
Comunicació de congrés
Accés restringit per política de l'editorialPrecipitation of gypsum crystals explains the severe swelling occurred in some tunnels crossing sulphate formations. The presence of groundwater and discontinuities, and the proportions of anhydrite and gypsum within the ... -
Heave of a building induced by swelling of an anhydritic Triassic claystone
(2018-09)
Article
Accés obertThis paper describes the conditions leading to a sustained, low-rate, heave phenomenon affecting a building founded on hard Keuper anhydritic rock. The building was located in an abandoned gypsum quarry. Monitoring data ... -
Heave of a building on Keuper anhydritic formation
(International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialThe development of fissures in a building placed at the site of an ancient quarry excavated in a Keuper formation motivated a detailed in-situ investigation of the foundation material. Severe fissures and cracks were present ... -
Heave of a railway bridge induced by gypsum crystal growth: field observations
(2013-07)
Article
Accés restringit per política de l'editorialThe central pillars of a bridge belonging to a recently built high-speed railway line experienced an unexpected and continuous heave after the end of construction. Pillars were founded on 3 × 3 pile groups capped by a rigid ... -
Heave of a railway bridge: modelling gypsum crystal growth
(2013-01)
Article
Accés restringit per política de l'editorialThe heave of the central pillars of a railway bridge, founded on large-diameter bored piles, is a consequence of gypsum crystal growth in an anhydritic claystone stratum underlying the tip of the piles. The heave mechanism ... -
Heave of a sports centre on anhydritic claystone formation
(CRC Press, 2019)
Text en actes de congrés
Accés restringit per política de l'editorialThe development of fissures in a building placed at the site of an ancient quarry excavated in a claystone Keuper formation motivated a detailed in-situ investigation of the foundation material. Severe fissures and cracks ... -
Hidratación de un relleno compactado que contiene agregados de alta densidad
(1996-01)
Article
Accés obertSe han investigado, mediante ensayos de laboratorio, las características de hidratación de mezclas expansivas constituidas por una matriz de polvo arcilloso y agregados (pastillas de pequeño tamaño) de arcilla de alta ... -
Hidratación de un relleno compactado que contiene agregados de alta intensidad
(1996-01)
Article
Accés restringit per política de l'editorialSe han investigado, mediante ensayos de laboratorio, las características de hidratación de mezclas expansivas constituídas por una matriz de polvo arcilloso y agregados (pastillas de pequeño tamaño) de arcilla de alta ... -
Highly expansive granular mixtures
(CRC Press, 2014)
Text en actes de congrés
Accés restringit per política de l'editorialThe paper describes the behavior of mixtures of highly compacted bentonite pellets. They are considered as a suitable impervious and tight barrier for nuclear waste disposal. Laboratory experiments aimed at identifying the ... -
Hinchamiento en túneles por crecimiento de cristales y su modelación
(Universitat Politécnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-15)
Comunicació de congrés
Accés obertLa intensidad del comportamiento expansivo observado en excavaciones de túneles en arcillas sulfatadas es mayor que en otras rocas y suelos expansivos libres de sulfatos. En la mayoría de casos la funcionalidad y la ... -
HMC analysis of a tunnel in swelling rock
(AEDIFICATIO PUBLISHERS, 2009)
Text en actes de congrés
Accés restringit per política de l'editorialThe phenomenon of swelling in tunnels excavated through sulphate-bearing rock is quite frequent in some geological formations. The paper describes the case of the Lilla tunnel excavated in anhydritic-gypsiferous of Eocene ... -
Hydro-chemo-mechanical modelling of tunnels in sulfated rocks
(Thomas Telford, 2017-11)
Article
Accés obertA modelling procedure to address the tunnel–anhydritic rock interaction is described in this paper. The model incorporates the basic physico-chemical phenomena involved in rock swelling, often observed during excavation ... -
Hydro-mechanical behaviour of bentonite pellet mixtures
(Elsevier, 2007)
Article
Accés obertGranular mixtures made of high-density pellets of bentonite are being evaluated as an alternative buffer material for waste isolation. Ease of handling is an often-mentioned advantage. The paper described the experimental ... -
Hydromechanical analysis in geotechnical engineering using the Material Point Method
(Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2011)
Text en actes de congrés
Accés restringit per política de l'editorialThe explicit version of the Material Point Method has been extended in order to model coupled hydromechanical saturated problems. MPM discretizes the continuum, which is considered as a saturated soilfluid mixture, by ... -
Hydromechanical analysis in geotechnical engineering using the material point method
(CIMNE, 2011)
Text en actes de congrés
Accés obertThe explicit version of the Material Point Method [1] has been extended in order to model coupled hydromechanical saturated problems. MPM discretizes the continuum, which is considered as a saturated soilfluid mixture, ... -
Hydromechanical behaviour of compacted granular expansive mixtures: experimental and constitutive study
(2011-04-01)
Article
Accés restringit per política de l'editorialCompacted granular mixtures of high-density bentonite pellets have been evaluated as an alternative buffer material to fill the empty space around nuclear waste disposal canisters in horizontal drifts. Despite the obvious ... -
Image-based measurements of degree of saturation
(E3S Web of Conferences, 2020)
Text en actes de congrés
Accés obertA method based on SWIR images is proposed for measuring the degree of saturation in soils. This method is especially suitable for use in experiments conducted in the facilities of a common geotechnical laboratory. The ... -
Incorporating a microstructural state variable in constitutive modelling
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialThe selection of constitutive variables has been extensively discussed when modeling unsaturated soils. In general, suction and degree of saturation have been involved in the definition of constitutive variables. Recently, ... -
Influence of rainfall on the deformation and stability of a slope in overconsolidated clays: a case study
(Springer, 2003)
Article
Accés obertThe behaviour of an instrumented unstable slope in a profile of weathered overconsolidated clay has been analysed. Available field investigation data and laboratory tests were integrated in a coupled hydromechanical model ...
