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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Use of textile waste as an addition in the elaboration of an ecological concrete block

Anglade, J., Benavente, E., Rodríguez, J., Hinostroza, A. 05 February 2021 (has links)
The textile industry has grown significantly in recent years, reaching a global fiber production of 53 million tons which 12 % are recycled; Construction sector has been using more and more recycled materials from different industrial sources, to apply them in their constructions and to reduce CO2 emissions and final energy consumption. The present study aims to study the behavior of concrete blocks of fć= 210 kg/cm2 adding polyester textile waste with 3 %, 6 %, 9 %, 12 % and 15 %; void content, compressive strength and thermal conductivity decrease, and water absorption, acoustic insulation and unit price increase by 3 %, 34 % and 16 % compared to conventional concrete block.
2

Uso de vidrio reciclado como adición en la elaboración de concreto f’c=315 kg/cm2 para obras portuarias / Use of recycled glass as an addition in the elaboration of concrete f'c = 315 kg / cm2 for port works

Huapaya Tenazoa, Diego Andrés, Valdivia Farromeque, Joffrey Itamar 02 December 2019 (has links)
En la actualidad las cantidades de residuos han incrementado con el pasar de los años, convirtiéndose en una amenaza grave para el medio ambiente. Esto ha generado que reciba mayor atención por las autoridades e investigadores a nivel global, proponiendo usos respetuosos con el medio ambiente de estos residuos, los cuales han ido desarrollando y mejorando en los últimos años. Este estudio profundiza en el posible uso del residuo de vidrio plano como una solución sostenible, al ser adicionados en el concreto. Para esto, se hicieron diseños de mezcla con diferentes cantidades de vidrio pulverizado y se realizaron comparaciones para identificar el efecto en las propiedades del concreto mediante ensayos de asentamiento, resistencia a la compresión y resistencia a la compresión en condiciones de ataque por sulfatos. Los resultados muestran que, para dichas pruebas, la adición de vidrio pulverizado favorece a las características de sus propiedades, presentando además un ahorro económico. / At present the amounts of waste have increased over the years, turning into a serious threat to the environment. This has generated greater attention by authorities and researchers around the world, proposing environmentally friendly uses of these residues, which have been developing and improving in recent years. This study delves into the possible use of pulverized flat glass waste as a sustainable solution, when added to concrete. For this, mixing designs were made with different amounts of glass powder and comparisons were made to identify the effect on the properties of the concrete by slump tests, compressive strength and compressive strength in sulfate attack conditions. The results show that for these tests, the addition of glass powder favors the characteristics of its properties, while presenting an economic saving. / Tesis
3

Propuesta de vivienda sostenible utilizando concreto con fibras PET en un sistema de albañilería confinada y trombe a fin de mejorar el confort térmico en la sierra semi urbana / Proposal for a sustainable house using concrete with PET fibers in a confined masonry and trombe system to improve termal comfort in the semi-urban sierra

Dueñas Cervantes, Bruno, Soto Hinojosa, Wilder Dimas 31 December 2020 (has links)
El calentamiento global es un tema que genera mucha preocupación en la población mundial. Siendo el cambio climático una de las consecuencias que se perciben en las diversas partes del mundo. La manifestación de este cambio ha ocasionado que se propongan diversas técnicas o métodos que permitan mitigar o controlar relativamente las temperaturas extremas, entre estos métodos ingenieriles se propone al plástico como componente del concreto para aislar las temperaturas externas. Ese estudio desarrolla una investigación experimental de la influencia del tereftalato de polietileno (PET), al ser incluido en la mezcla de concreto, en el logro del confort térmico que se pudiese llegar a obtener, al combinarlo con una innovadora adaptación del sistema trombe en la construcción de una vivienda. Para ello, se asumirán especificaciones de investigaciones realizadas, con respecto a la elaboración e inclusión del PET, que permiten concluir indirectamente la mejora del aislamiento térmico sin dejar de cumplir las restricciones estructurales. Asimismo, se explicó a detalle, la forma en la que se adoptó e innovo el sistema de muros trombe al construir el techo de un prototipo de la vivienda. Los resultados muestran que la técnica empleada en el presente estudio permitió mejorar considerablemente la eficiencia térmica en el prototipo de la vivienda. / Global warming is a topic of great concern to the world population. Being climate change one of the consequences perceived in various parts of the world. The manifestation of this change has caused various techniques or methods to be proposed to mitigate or relatively control extreme temperatures. Among these engineering methods, plastic is proposed as a component of concrete to isolate external temperatures. This study develops an experimental investigation of the influence of polyethylene terephthalate (PET), when it is included in the concrete mix, in achieving the thermal comfort that could be obtained, when combined with an innovative adaptation of the trombe system in the construction of a house. For this, specifications of investigations carried out, with respect to the preparation and inclusion of PET, will be assumed, which allow indirectly to conclude the improvement of thermal insulation while still complying with structural restrictions. Likewise, the way in which the trombe system was adopted and innovated when building the roof of a prototype of the house was explained in detail. The results show that the technique used in the present study considerably improved the thermal efficiency of the prototype of the house. / Tesis

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