38 research outputs found
Intellettuali e artisti russi in visita all’Accademia Carrara: gli incontri con Giuseppe Diotti
No full textIl saggio pone l’accento sul ruolo dell’Accademia Carrara e della sua Pinacoteca nella fascinazione esercitata dall’arte italiana sull’intelligencija russa e, più in generale, nell’interazione tra le due grandi culture negli anni Trenta e Quaranta del XIX secolo.
In particolare, concentriamo l’attenzione sulle impressioni che l’incontro l’allora direttore dell’Accademia, Giuseppe Diotti, e la visita alla Pinacoteca suscitarono nell’animo di alcuni tra i maggiori artisti e intellettuali russi dell’epoca: il pittore Aleksandr Ivanov (1806-1858), il poeta Vasilij Žukovskij (1783-1852) e lo studioso Fëdor Čižov (1811-1877). Attraverso l’analisi di memorie e lettere, edite ed inedite si procede, caso per caso, alla ricostruzione delle opere effettivamente ammirate dai viaggiatori: lavoro complicato da descrizioni vaghe, titoli e trascrizioni dei nomi degli autori imprecise e approssimative, inconvenienti dovuti principalmente alla natura strettamente privata dei documenti.The essay femphazyses the role of the Carrara Academy and its Pinacoteca in the fascination exercised by Italian art on the Russian intelligentsia in the 1830s and 1840s.
In particular, we focus our attention on the impressions that the meeting with the director of the Carrara Academy , Giuseppe Diotti, and the visit to the Art Gallery aroused in the soul of some of the greatest Russian artists and intellectuals of the time: the painter Aleksandr Ivanov (1806-1858), the poet Vasily Zhukovsky (1783-1852) and the scholar Fyodor Tchizhov (1811-1877). Through the analysis of memories and letters, published and unpublished, we proceed, case by case, to the reconstruction of works actually admired by travelers: it is a work complicated by vague descriptions, titles and transcripts of the names of the authors inaccurate and approximate. These all inconveniences are mainly due to nature strictly private documents
Intellettuali e artisti russi in visita all’Accademia Carrara: gli incontri con Giuseppe Diotti
No full textIl saggio pone l’accento sul ruolo dell’Accademia Carrara e della sua Pinacoteca nella fascinazione esercitata dall’arte italiana sull’intelligencija russa e, più in generale, nell’interazione tra le due grandi culture negli anni Trenta e Quaranta del XIX secolo.
In particolare, concentriamo l’attenzione sulle impressioni che l’incontro l’allora direttore dell’Accademia, Giuseppe Diotti, e la visita alla Pinacoteca suscitarono nell’animo di alcuni tra i maggiori artisti e intellettuali russi dell’epoca: il pittore Aleksandr Ivanov (1806-1858), il poeta Vasilij Žukovskij (1783-1852) e lo studioso Fëdor Čižov (1811-1877). Attraverso l’analisi di memorie e lettere, edite ed inedite si procede, caso per caso, alla ricostruzione delle opere effettivamente ammirate dai viaggiatori: lavoro complicato da descrizioni vaghe, titoli e trascrizioni dei nomi degli autori imprecise e approssimative, inconvenienti dovuti principalmente alla natura strettamente privata dei documenti.The essay femphazyses the role of the Carrara Academy and its Pinacoteca in the fascination exercised by Italian art on the Russian intelligentsia in the 1830s and 1840s.
In particular, we focus our attention on the impressions that the meeting with the director of the Carrara Academy , Giuseppe Diotti, and the visit to the Art Gallery aroused in the soul of some of the greatest Russian artists and intellectuals of the time: the painter Aleksandr Ivanov (1806-1858), the poet Vasily Zhukovsky (1783-1852) and the scholar Fyodor Tchizhov (1811-1877). Through the analysis of memories and letters, published and unpublished, we proceed, case by case, to the reconstruction of works actually admired by travelers: it is a work complicated by vague descriptions, titles and transcripts of the names of the authors inaccurate and approximate. These all inconveniences are mainly due to nature strictly private documents
Leaching Behaviour of Construction and Demolition Wastes and Recycled Aggregates: Statistical Analysis Applied to the Release of Contaminants
No full textConstruction and demolition wastes represent a primary source of new alternative materials which, if properly recovered, can be used to replace virgin raw materials partially or totally. The distrust of end-users in the use of recycled aggregates is mainly due to the environmental performance of these materials. In particular, the release of pollutants into the surrounding environment appears to be the aspect of greatest concern. This is because these materials are characterized by a strong heterogeneity which can sometimes lead to contaminant releases above the legal limits for recovery. In this context, an analysis of the leaching behaviour of both CDWs and RAs was conducted by applying a statistical analysis methodology. Subsequently, to evaluate the influence of the particle size and the volumetric reduction of the material on the release of contaminants, several experimental leaching tests were carried out according to the UNI EN 12457-2 and UNI EN 12457-4 standards. The results obtained show that chromium, mercury, and COD are the most critical parameters for both CDWs and RAs. Moreover, the material particle size generally affects the release of contaminants (i.e., finer particles showed higher releases), while the crushing process does not always involve higher releases than the sieving process
Statistical assessment of construction and demolition waste and recycled aggregates leaching behaviour
No full textUnderstanding variability in recycled aggregate leaching properties through statistical evaluation
No full textTechnical analysis of full-scale Construction and Demolition Waste treatment plants: case studies of the Lombardy Region, Italy
No full textConstruction and demolition activities in Italy and the Lombardy Region produce a considerable amount of wastes that can be valorised as secondary raw materials. The recovery of construction and demolition wastes is severely limited by the lack of consolidated and sustainable treatment chains and by the strong variability of their environmental characteristics that may generate potentially dangerous effects for the environment. The purpose of this study was to evaluate and technically define the current treatment chains in the Province of Brescia (Lombardy) by analyzing three full-scale treatment plants in order to highlight barriers to demolition waste recovery and propose possible solutions and improvement strategies. To best represent the entire management and treatment system, the analysis was developed on all the acceptance, treatment, and final quality control phases. Moreover, chemical composition and leaching data on demolition wastes and recycled aggregates were collected from the three treatment plants and statistically analyzed to assess their potential recovery according to the Italian legislation. Mixed non-hazardous waste is the fraction mostly managed by recycling plants and mixed recycled aggregates are the main products obtained from the treatment. These are mostly used in roads and in geotechnical applications. Chemical composition results showed that the pH is generally alkaline and tin and benzene are the most critical elements for both demolition wastes and recycled aggregates with respect to the regulatory limit values. Total chromium was identified as a critical compound in leachates. The results of the statistical analysis confirmed that chromium was mainly released by cement materials
Experimental Evaluation of Recycled Aggregates, Washing Water and Cement Sludge Recovered from Returned Concrete
No full textIn this paper, a new innovative technology for the treatment of returned concrete is proposed. This method is based on the application of physical–mechanical processes that allow to obtain new quality products: recycled aggregates, microfiltered water and cement sludge. Specifically, by means of a mechanical system equipped with buffer and Archimedes screws, fine (d 5 mm) aggregates are obtained. The water coming from the washing process is sent to a microfiltration process, where a filter membrane separates the liquid phase (microfiltered water) from the solid phase (cement sludge) and no type of potentially toxic additive is added. In this context, this paper investigates the feasibility of using all these components as new raw materials for sustainable concrete production. In particular, according to the requirements imposed by technical standards, an experimental program was developed, aimed at evaluating the physical, chemical, and mechanical properties of the analyzed materials. The results showed that both recycled aggregates, the microfiltered water and the cement sludge can be used to produce new structural concrete. In particular, it was proven that also the cement sludge, which generally represents the most critical component destined for disposal, can be reused as filler in the partial replacement of sand
Impact of Recycled Aggregate on the Mechanical and Environmental Properties of Concrete: A Review
No full textThis review aims to present and discuss the mechanical and environmental properties of two different type of recycled aggregates obtain from construction and demolition waste (CDW): (1) Recycled Concrete Aggregates (RCA) and (2) Mixed Recycled Aggregates (MRA). In addition, the properties of the concrete in the fresh (workability, water/cement ratio) and hardened state (mechanical and durability properties), as well as the environmental impact of the concrete produced with the two types of recycled aggregates, are presented and discussed. Due to the heterogeneous composition of recycled aggregates, the concrete properties can be significantly variable. The systematic review concerns scientific papers published from 2010 to 2020 and it shows the importance of the selection process in order to obtain high quality CDW as well as of the type of recycled aggregates on concrete properties. In particular, recycled concrete aggregates show a better quality and homogeneity than mixed recycled aggregates that make them more suitable for concrete. This work presents an overview on the influence of recycled aggregate quality on the physical, mechanical and environmental properties of concrete
Construction and demolition waste as a renewable resource for recycled aggregates: analysis of italian case studies
No full text
