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idUS captura, almacena, indexa, preserva y distribuye materiales de investigación en formato digital.2024-03-19T12:55:37ZLa modificación de la EH-91 en relación con la calidad del hormigón
https://hdl.handle.net/11441/156423
La modificación de la EH-91 en relación con la calidad del hormigón
1997-01-01T00:00:00ZEstructura y Poder de la Comunicación, de R. Reig; Salamanca: Comunicación Social, 2023 [Reseña]
https://hdl.handle.net/11441/156422
Estructura y Poder de la Comunicación, de R. Reig; Salamanca: Comunicación Social, 2023 [Reseña]
2024-01-01T00:00:00ZFabrication and Mechanical Evaluation of Eco-Friendly Geopolymeric Mortars Derived from Ignimbrite and Demolition Waste from the Construction Industry in Peru
https://hdl.handle.net/11441/156421
Fabrication and Mechanical Evaluation of Eco-Friendly Geopolymeric Mortars Derived from Ignimbrite and Demolition Waste from the Construction Industry in Peru
Ignimbrite rock is a volcanic material located in the Arequipa region (Peru), and for centuries, it has been used as a construction material, giving a characteristic light pastel, white to pink color to the city of Arequipa, with white being the most common. In the present study, the potential use of three types of Arequipa raw materials (ignimbrite rock powder, calcined clay powder, and demolition mortar powder) as the main source of new binders or the manufacture of environmentally friendly mortars, without the addition of ordinary Portland cement (OPC) is discussed. In this work, an in-depth characterization of the materials used was carried out. The proposed fabrication route for geopolymeric materials was considered for the manufacture of binders and mortars using an alkaline solution of NaOH with values between 12 and 18 molar, as a trigger for the geopolymerization process. Geopolymeric mortars were obtained by adding a controlled amount of fine sand to the previously prepared mixture of binder raw material and an alkaline solution. Conventional OPC and geopolymeric mortars manufactured under the same conditions were mechanically evaluated by uniaxial compression tests at a constant compression rate of 0.05 mm/min and under normal conditions of temperature and atmosphere, where the most optimal values were obtained for 15 molar alkaline solutions of ignimbrite without the addition of aggregates, with values of compressive strength of 42 MPa and a modulus elastic of 30 GPa. The results revealed a significant increase in the maximum strength and modulus of elasticity values when the volumetric fractions of OPC are completely replaced with geopolymeric binders in the study conditions of this work, demonstrating the enormous potential of the ignimbrite rock and construction waste studied, as raw material of alternative mortar binders without the addition of OPC. With this work, the ignimbrite rock, of great value in the region and also found in other areas of the Earth’s geography, was characterized and valued, in addition to the calcined clay and demolition mortar of the region.
2024-02-15T00:00:00ZHabitar en la ceguera. Casas, atmósferas y paisajes perceptivos a los ojos de algunos maestros del siglo XX
https://hdl.handle.net/11441/156420
Habitar en la ceguera. Casas, atmósferas y paisajes perceptivos a los ojos de algunos maestros del siglo XX
Jorge Luis Borges confesó, en más de una ocasión, que su modesta ceguera no era la dramática oscuridad que el sentido común cree, sino mas bien un refugio que en su caso se fue construyendo en un lento crepúsculo. Al finalizar su discurso de recepción del grado Honoris Causa de la Facultad de Filosofía y Letras de la Universidad de Chile, el escritor argentino narraba la lenta despedida de su vista y la sensación placentera de entrar en un nuevo espacio habitable más rico, profundo y creativo. Confiando en la ceguera como paisaje introspectivo, como espacio habitable donde se da cita a la fantasía con el realismo, es en este contexto que, el ensayo propone habitar con el pensamiento un espacio doméstico ingrávido e infinito. Otros artistas lo consiguieron - Groussac, Monet, Homero, Joyce, Herzog, Pallasmaa e Italo Calvino- convirtiendo esta especie de ceguera inducida en una habitación íntima y creativa, en la cual acomodarse al final de sus vidas. El profesor Yeager introduce este relato haciéndonos ascender a los cielos en busca de un espacio inspirador, negro y profundo. La casa soñada por Manuel Parra y Danilo Veras, nos aleja de la luz para descubrirnos a nosotros mismos en una experiencia sensitiva única. De la mano del maestro Lewerentz se dará cita en este ensayo a algunas experimentaciones arquitectónicas con una singular caja oscura, un medioambiente asfáltico y negro: black box en Lund. Habitar en la ceguera nos sugiere una revisión de nuestro campo perceptivo, habitando con la imaginación estos lugares introspectivos en los que las leyes parecen haber desaparecido. La ceguera, como afirmaba Borges en aquel discurso, hace que el cuerpo se una al espacio para soñar con un nuevo habitar más poético y creativo (Figura 1).; Jorge Luis Borges confessed, on more than one occasion, that his modest blindness was not the dramatic darkness that common sense believes but rather a refuge that, in his case, was built in a slow twilight. At the end of his speech to receive the Honoris Causa degree from the Faculty of Philosophy and Letters of the University of Chile, the Argentine writer spoke about the gradual parting of his sight and the pleasant sensation of entering a new, richer, deeper, and more creative living space. Relying on blindness as an introspective landscape, as a habitable space where fantasy meets realism, it is in this context that the essay proposes to inhabit, with thought, a weightless and infinite domestic space. Other artists achieved it - Groussac, Monet, Homer, Joyce, Herzog, Pallasmaa, and Italo Calvino - turning this kind of induced blindness into an intimate and creative room in which to settle at the end of their lives. Professor Yeager introduces this story, making us ascend to the heavens in search of an inspiring, black, and profound space. The house dreamed by Manuel Parra and Danilo Veras leads us away from the light to discover ourselves in a unique sensory experience. From the hand of the master Lewerentz, this essay will bring together some architectural experimentations with a singular dark box, an asphalt and black environment: black box in Lund. Living in blindness suggests a revision of our perceptual field, imaginatively inhabiting these introspective places where laws seem to have disappeared. Blindness, as Borges mentioned in that speech, makes the body join the space to dream of a new, more poetic, and creative dwelling (Figure 1).; Jorge Luis Borges confessou, em mais de uma ocasião, que sua modesta cegueira não era a escuridão dramática que o senso comum acredita que fosse, mas sim um refúgio que, no seu caso, foi construído em um lento crepúsculo. No final de seu discurso para receber o título Honoris Causa da Faculdade de Filosofia e Letras da Universidade do Chile, o escritor argentino relatou a lenta despedida de sua visão e a agradável sensação de entrar em um novo espaço habitável, mais rico, mais profundo e mais criativo. Confiando na cegueira como uma paisagem introspectiva, como um espaço habitável onde a fantasia se encontra com o realismo, é nesse contexto que o ensaio propõe habitar com o pensamento um espaço doméstico leve e infinito. Outros artistas conseguiram isso - Groussac, Monet, Homer, Joyce, Herzog, Pallasmaa e Italo Calvino - transformando esse tipo de cegueira induzida em um cômodo íntimo e criativo no qual se instalaram no final de suas vidas. O professor Yeager apresenta essa história fazendo-nos subir aos céus em busca de um espaço inspirador, negro e profundo. A casa sonhada por Manuel Parra e Danilo Veras nos afasta da luz para nos descobrirmos em uma experiência sensorial única. Das mãos do mestre Lewerentz, este ensaio reunirá algumas experiências arquitetônicas com uma singular caixa escura, um ambiente asfáltico e negro: black box em Lund. Habitar na cegueira sugere uma revisão de nosso campo perceptivo, habitando com a imaginação esses lugares introspectivos nos quais as leis parecem ter desaparecido. A cegueira, como Borges afirmou naquele discurso, faz com que o corpo se junte ao espaço para sonhar com um novo habitar, mais poético e criativo (Figura 1).
2024-01-01T00:00:00Z