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The reuse of construction and demolition waste is a necessary way to achieve greater sustainability in building, introducing the criteria of the so-called circular economy in the design of the production process of new construction materials. This research focuses on analyzing the properties of mortars made with recycled aggregates from concrete waste and reinforced with aramid fibers. For this purpose, an experimental campaign was carried out, including chemical, physical, mechanical and durability tests, performing a statistical analysis to discuss the different properties analyzed. The results show how the incorporation of aramid fibers in the matrix of cement mortars made with recycled concrete aggregate improves their technical performance and mechanical resistance, thus increasing their application possibilities and achieving similar results in some properties to those obtained with traditional mortars made with natural aggregate.
Alberto Morón; Daniel Ferrández; Pablo Saiz; Carlos Morón. Experimental Study with Cement Mortars Made with Recycled Concrete Aggregate and Reinforced with Aramid Fibers. Applied Sciences 2021, 11, 7791 .
AMA StyleAlberto Morón, Daniel Ferrández, Pablo Saiz, Carlos Morón. Experimental Study with Cement Mortars Made with Recycled Concrete Aggregate and Reinforced with Aramid Fibers. Applied Sciences. 2021; 11 (17):7791.
Chicago/Turabian StyleAlberto Morón; Daniel Ferrández; Pablo Saiz; Carlos Morón. 2021. "Experimental Study with Cement Mortars Made with Recycled Concrete Aggregate and Reinforced with Aramid Fibers." Applied Sciences 11, no. 17: 7791.
Carlos Morón; Daniel Ferrández; Irantzu Recalde; Engerst Yedra. THE ROLE OF EMOTIONS. CASE STUDY WITH ENGINEERING STUDENTS. EDULEARN21 Proceedings 2021, 3700 -3705.
AMA StyleCarlos Morón, Daniel Ferrández, Irantzu Recalde, Engerst Yedra. THE ROLE OF EMOTIONS. CASE STUDY WITH ENGINEERING STUDENTS. EDULEARN21 Proceedings. 2021; ():3700-3705.
Chicago/Turabian StyleCarlos Morón; Daniel Ferrández; Irantzu Recalde; Engerst Yedra. 2021. "THE ROLE OF EMOTIONS. CASE STUDY WITH ENGINEERING STUDENTS." EDULEARN21 Proceedings , no. : 3700-3705.
The construction sector is one of the main consumers of raw materials and generates a high volume of waste within the European Union. The search for new materials that are more sustainable and respectful of the environment has become a challenge for countries with a high degree of industrialization. In this work, a study of the most relevant properties of masonry mortars made with recycled aggregates and reinforced with synthetic fibers was carried out. Three types of aggregates were used—natural, concrete recycling and ceramic recycling—and two types of reinforcing fibers: polypropylene and polyolefin. In this way, various tests of physical-mechanical characterization and a statistical analysis of the results were carried out. It has been shown that the mortars made from aggregate recycled concrete and reinforced with polypropylene fiber are the ones with the best properties for application in the construction sector, although without improving the properties of traditional mortars made from natural aggregate and without fibers.
Alberto Morón; Daniel Ferrández; Pablo Saiz; Gabriela Vega; Carlos Morón. Influence of Recycled Aggregates on the Mechanical Properties of Synthetic Fibers-Reinforced Masonry Mortars. Infrastructures 2021, 6, 84 .
AMA StyleAlberto Morón, Daniel Ferrández, Pablo Saiz, Gabriela Vega, Carlos Morón. Influence of Recycled Aggregates on the Mechanical Properties of Synthetic Fibers-Reinforced Masonry Mortars. Infrastructures. 2021; 6 (6):84.
Chicago/Turabian StyleAlberto Morón; Daniel Ferrández; Pablo Saiz; Gabriela Vega; Carlos Morón. 2021. "Influence of Recycled Aggregates on the Mechanical Properties of Synthetic Fibers-Reinforced Masonry Mortars." Infrastructures 6, no. 6: 84.
In this research, a microscope stand has been built which enables both the measurement of properties and the characterization of amorphous magnetic materials when they are subjected to an electric current. It is currently not possible to ascertain the real temperature during current annealing using a thermocouple, due to the thermal inertia and the fact that its mass is comparable to that of the amorphous material. To solve this, the infrared radiation of the material can be measured during the heating process by means of a microscope. In order to achieve this, it is necessary to place the material under the microscope so that the said radiation value may be obtained whilst avoiding buckling. The stand fulfills this function since it features a sliding part connected to a weight, which enables the measurement of the magnetic properties and the temperature of the amorphous ferromagnetic material using the microscope. The device developed is very useful for detecting crystallization processes in situ and it could also be used to study the growth of monocrystals and the recrystallization of grains.
Carlos Moron-Fernandez; Amparo Verdu-Vazquez; Tomas Gil-Lopez; Alberto Moron-Barrios. Microscope Stand for the Measurement and Characterization of Amorphous Ferromagnetic Materials. IEEE Transactions on Instrumentation and Measurement 2021, 70, 1 -7.
AMA StyleCarlos Moron-Fernandez, Amparo Verdu-Vazquez, Tomas Gil-Lopez, Alberto Moron-Barrios. Microscope Stand for the Measurement and Characterization of Amorphous Ferromagnetic Materials. IEEE Transactions on Instrumentation and Measurement. 2021; 70 ():1-7.
Chicago/Turabian StyleCarlos Moron-Fernandez; Amparo Verdu-Vazquez; Tomas Gil-Lopez; Alberto Moron-Barrios. 2021. "Microscope Stand for the Measurement and Characterization of Amorphous Ferromagnetic Materials." IEEE Transactions on Instrumentation and Measurement 70, no. : 1-7.
The building sector is one of the most relevant at world level in view of the percentage of gross domestic product (GDP) concerned, as well as the number of new jobs created. Nevertheless, it is a completely male-dominated industry. Different institutions and organisms, such as the Agenda 2030 and the Sustainable Development Goals, struggle to reduce gender inequality in different environments, including the working one. Aligned with these goals, this study provides the data exploited from the first survey regarding gender inequality within the professionals of the building engineering field in the Spanish population as a whole. This survey was developed in 2018 by the Spanish General Council of Technical Architecture and it was sent to its members. The sample involved 1353 cases. For this data mining, bivariate analyses were conducted in order to subsequently carry out a factor analysis and the socio–demographic composition of the dimensions found. Results exposed statistically meaningful differences in the eyes of women and men about those factors which facilitate practice and continuity in the profession. The most relevant conclusions drawn from the factor analysis reflect the existence of three factors: (1) work competences, (2) social capital and (3) physical appearance and being a man, dimensions in which women and men’s opinion was unevenly distributed.
Irantzu Recalde-Esnoz; Daniel Ferrández; Carlos Morón; Guadalupe Dorado. Inequalities in the Exercise and Continuity in Building Engineering in Spain. Factor Analysis Including Gender Perspective. Sustainability 2021, 13, 5514 .
AMA StyleIrantzu Recalde-Esnoz, Daniel Ferrández, Carlos Morón, Guadalupe Dorado. Inequalities in the Exercise and Continuity in Building Engineering in Spain. Factor Analysis Including Gender Perspective. Sustainability. 2021; 13 (10):5514.
Chicago/Turabian StyleIrantzu Recalde-Esnoz; Daniel Ferrández; Carlos Morón; Guadalupe Dorado. 2021. "Inequalities in the Exercise and Continuity in Building Engineering in Spain. Factor Analysis Including Gender Perspective." Sustainability 13, no. 10: 5514.
Steel is responsible for providing resistance to flexotraction to reinforced concrete structures. Steel is responsible for providing reinforced concrete structures with a flexural strength. For this reason, it is important to study its behaviour under different tensile states. This study used measuring equipment that was able to determine variations in magnetic properties of B500-SD steel bars during standard tensile tests. The magnetic field generated by a Helmholtz coil was collected through a secondary circuit. This enables the induced electromotive force to relate with the steel deflection stages when subjected to the tests. Moreover, it was possible to determine the variation of magnetic permeability when submitting 12mm and 16mm diameter bars to different tensile states. This method could prove extremely useful in determining the tensile state of ribbed steel bars that are embedded into the concrete structure.
D. Ferrández; C. Morón; P. Saiz; A. Morón. Magnetic variation in construction steels under tensile stress. Empirical research with Helmholtz coils. Materiales de Construcción 2021, 71, e243 .
AMA StyleD. Ferrández, C. Morón, P. Saiz, A. Morón. Magnetic variation in construction steels under tensile stress. Empirical research with Helmholtz coils. Materiales de Construcción. 2021; 71 (341):e243.
Chicago/Turabian StyleD. Ferrández; C. Morón; P. Saiz; A. Morón. 2021. "Magnetic variation in construction steels under tensile stress. Empirical research with Helmholtz coils." Materiales de Construcción 71, no. 341: e243.
This paper shows the characterization of a new lightened gypsum-based material for use in buildings. A plaster material has been designed with a polymeric compound based on polyvinyl acetate, bicarbonate and a boric acid solution, which reduce the density and thermal conductivity by up to 20% and 30%, respectively. In addition, tests have been carried out with the lightened plaster material reinforced with glass (GF), basalt (BF), polypropylene (PPF) and wood (WF) fibers. A significant improvement in mechanical properties was achieved. All samples obtained resistance values greater than 2 MPa in flexion and 3 MPa in compression. Physico-chemical analysis were also carried out. The study is completed with a statistical analysis, where confidence intervals have been obtained for the mean at 95% confidence for each of the physical properties studied.
Manuel Álvarez; Daniel Ferrández; Carlos Morón; Evangelina Atanes-Sánchez. Characterization of a New Lightened Gypsum-Based Material Reinforced with Fibers. Materials 2021, 14, 1203 .
AMA StyleManuel Álvarez, Daniel Ferrández, Carlos Morón, Evangelina Atanes-Sánchez. Characterization of a New Lightened Gypsum-Based Material Reinforced with Fibers. Materials. 2021; 14 (5):1203.
Chicago/Turabian StyleManuel Álvarez; Daniel Ferrández; Carlos Morón; Evangelina Atanes-Sánchez. 2021. "Characterization of a New Lightened Gypsum-Based Material Reinforced with Fibers." Materials 14, no. 5: 1203.
Non-destructive testing can be used to determine some of the most relevant physical properties of building materials. In this work, two low-cost measuring devices were developed capable of determining the variation in real-time of the percentage of humidity that is produced in the construction of gypsum and plaster during the hardening process. For this, an Arduino resistive sensor and a capacitive sensor of our design were used. The results show how it is possible to determine the variations in mixing water content during the seven days of curing established by the UNE-EN 13279-2 standard as well relate to the mechanical resistance of the test specimens with the same percentage of humidity. Additionally, the study was completed with the determination of the formation of the dihydrate compound linked to this setting process in the test specimens by conducting X-ray diffraction and thermogravimetric analysis tests at different ages of the samples.
Daniel Ferrández; Carlos Morón; Pablo Saiz; Evangelina Atanes-Sánchez; Engerst Yedra. Low-Cost Sensors for Determining the Variation in Interior Moisture Content in Gypsum Composite Materials. Materials 2020, 13, 5831 .
AMA StyleDaniel Ferrández, Carlos Morón, Pablo Saiz, Evangelina Atanes-Sánchez, Engerst Yedra. Low-Cost Sensors for Determining the Variation in Interior Moisture Content in Gypsum Composite Materials. Materials. 2020; 13 (24):5831.
Chicago/Turabian StyleDaniel Ferrández; Carlos Morón; Pablo Saiz; Evangelina Atanes-Sánchez; Engerst Yedra. 2020. "Low-Cost Sensors for Determining the Variation in Interior Moisture Content in Gypsum Composite Materials." Materials 13, no. 24: 5831.
The construction and demolition waste can be used as an alternative with a lower environmental impact compared to the use of natural aggregates in the concrete and mortar manufacture. In this work, it has been performed an analysis of lime and cement mortar properties made with ceramic recycled aggregates reinforced with three types of fibers: glass, basalt and carbon. An experimental campaign has been carried out which includes the chemical and physical characterization of the materials and the statistical analysis of the results obtained. It has been proven that the addition of fibers improves the mechanical properties of the material and decreases its retraction, which favors the incorporation of recycled aggregates in the mortars manufacture. Based on the results obtained, it can be stated that carbon fiber is the best performing reinforcing material, as it has been demonstrated in this statistical analysis.
A. Morón Barrios; D. Ferrández Vega; P. Saiz Martínez; E. Atanes-Sánchez; C. Morón Fernández. Study of the properties of lime and cement mortars made from recycled ceramic aggregate and reinforced with fibers. Journal of Building Engineering 2020, 35, 102097 .
AMA StyleA. Morón Barrios, D. Ferrández Vega, P. Saiz Martínez, E. Atanes-Sánchez, C. Morón Fernández. Study of the properties of lime and cement mortars made from recycled ceramic aggregate and reinforced with fibers. Journal of Building Engineering. 2020; 35 ():102097.
Chicago/Turabian StyleA. Morón Barrios; D. Ferrández Vega; P. Saiz Martínez; E. Atanes-Sánchez; C. Morón Fernández. 2020. "Study of the properties of lime and cement mortars made from recycled ceramic aggregate and reinforced with fibers." Journal of Building Engineering 35, no. : 102097.
This work presents a new method to determine the evolution of the dynamic Young’s modulus (MOE) from small mechanical disturbances caused by cement mortar samples and whose value is collected using a low-cost Arduino accelerometer. The results obtained are correlated with measurements made using traditional ultrasound techniques, in addition to the evolution of MOE being related to the variation in mechanical properties that cement mortars experience over time. In this way, in this work, a secure application method is presented that allows us to advance the knowledge of construction materials with the incorporation of construction and demolition waste (CDW) and—more specifically—of cement mortars made with aggregates recycled from ceramic or concrete waste.
Engerst Yedra; Daniel Ferrández; Carlos Morón; Edmundo Gómez. New System to Determine the Evolution of the Dynamic Young’s Modulus from Early Ages in Masonry Mortars. Applied Sciences 2020, 10, 8129 .
AMA StyleEngerst Yedra, Daniel Ferrández, Carlos Morón, Edmundo Gómez. New System to Determine the Evolution of the Dynamic Young’s Modulus from Early Ages in Masonry Mortars. Applied Sciences. 2020; 10 (22):8129.
Chicago/Turabian StyleEngerst Yedra; Daniel Ferrández; Carlos Morón; Edmundo Gómez. 2020. "New System to Determine the Evolution of the Dynamic Young’s Modulus from Early Ages in Masonry Mortars." Applied Sciences 10, no. 22: 8129.
Carlos Morón; Irantzu Recalde; Engerst Yedra; Daniel Ferrández. THE IMPLEMENTATION OF THE ETHICS OF CARE IN PRIMARY EDUCATION: A PROPOSAL THROUGH PLANTS. ICERI2020 Proceedings 2020, 5340 -5345.
AMA StyleCarlos Morón, Irantzu Recalde, Engerst Yedra, Daniel Ferrández. THE IMPLEMENTATION OF THE ETHICS OF CARE IN PRIMARY EDUCATION: A PROPOSAL THROUGH PLANTS. ICERI2020 Proceedings. 2020; ():5340-5345.
Chicago/Turabian StyleCarlos Morón; Irantzu Recalde; Engerst Yedra; Daniel Ferrández. 2020. "THE IMPLEMENTATION OF THE ETHICS OF CARE IN PRIMARY EDUCATION: A PROPOSAL THROUGH PLANTS." ICERI2020 Proceedings , no. : 5340-5345.
Carlos Morón; Daniel Ferrández; Manuel Álvarez; Alberto Morón. PROJECT-BASED LEARNING: FUNDAMENTS AND APPLICATION IN ENGINEERING STUDENTS. ICERI2020 Proceedings 2020, 5359 -5365.
AMA StyleCarlos Morón, Daniel Ferrández, Manuel Álvarez, Alberto Morón. PROJECT-BASED LEARNING: FUNDAMENTS AND APPLICATION IN ENGINEERING STUDENTS. ICERI2020 Proceedings. 2020; ():5359-5365.
Chicago/Turabian StyleCarlos Morón; Daniel Ferrández; Manuel Álvarez; Alberto Morón. 2020. "PROJECT-BASED LEARNING: FUNDAMENTS AND APPLICATION IN ENGINEERING STUDENTS." ICERI2020 Proceedings , no. : 5359-5365.
Gypsum is a material that has been widely used since ancient times in building and industrial construction. Due to the great development of prefabricated construction in the last years, diverse authors have tried to improve the properties of plaster panels and boards through its composition variations. The aim of this study is to determine what type of fibre, among the most used in plaster mixing ones, presents better properties to be used in prefabricated elements. For this, five types of fibres were used: two natural (wood and straw) and thee synthetic (glass, basalt and polypropylene), performing all the tests according to the standard UNE-EN 132792:2006. The conclusions show after statistical analysis that fiberglass presents better results for its application in the production of gypsum prefabricated panels and boards. Key words: gypsum-based composite, natural fibre, synthetic fibre, prefabricated.
Daniel Ferrandez Vega; Pablo Saiz Martinez; Carlos Moron Fernandez; Evangelina Atanes Sanchez. COMPARATIVE ANALYSIS OF FIBRE-REINFORCED PLASTERS FOR THE PRODUCTION OF PRECAST ELEMENTS. DYNA 2020, 95, 333 -338.
AMA StyleDaniel Ferrandez Vega, Pablo Saiz Martinez, Carlos Moron Fernandez, Evangelina Atanes Sanchez. COMPARATIVE ANALYSIS OF FIBRE-REINFORCED PLASTERS FOR THE PRODUCTION OF PRECAST ELEMENTS. DYNA. 2020; 95 (1):333-338.
Chicago/Turabian StyleDaniel Ferrandez Vega; Pablo Saiz Martinez; Carlos Moron Fernandez; Evangelina Atanes Sanchez. 2020. "COMPARATIVE ANALYSIS OF FIBRE-REINFORCED PLASTERS FOR THE PRODUCTION OF PRECAST ELEMENTS." DYNA 95, no. 1: 333-338.
The hardening of the conglomerates’ materials is characterized by the change in the state of the paste, from a fluid state -after mixing- to its solid-state. At present, the well-known Vicat Needle Method is used to determine the hardening times, following the UNE-EN 13279-2 and UNE-EN 196-3 standards, depending on whether they are gypsum, plaster or cement. In this work, two alternative low-cost methods and easily applicable are proposed, based on capacitive and resistive sensors, which can help to improve the production process of prefabricated construction. The results show how it is possible to relate the setting times conventionally measured with the variations in the response of the sensors implemented. On the other hand, the behavior of the material can be monitored in real-time without having to rely on a manual test. This work, therefore, validates two alternative methods for the testing of conglomerates’ materials.
Daniel Ferrandez Vega; Engerst Yedra Alvarez; Carlos Moron Fernandez; Alberto Moron Barrios. ALTERNATIVE TEST FOR THE DETERMINATION OF THE SETTING TIME. CAPACITIVE AND RESISTIVE METHOD. DYNA 2020, 95, 294 -298.
AMA StyleDaniel Ferrandez Vega, Engerst Yedra Alvarez, Carlos Moron Fernandez, Alberto Moron Barrios. ALTERNATIVE TEST FOR THE DETERMINATION OF THE SETTING TIME. CAPACITIVE AND RESISTIVE METHOD. DYNA. 2020; 95 (1):294-298.
Chicago/Turabian StyleDaniel Ferrandez Vega; Engerst Yedra Alvarez; Carlos Moron Fernandez; Alberto Moron Barrios. 2020. "ALTERNATIVE TEST FOR THE DETERMINATION OF THE SETTING TIME. CAPACITIVE AND RESISTIVE METHOD." DYNA 95, no. 1: 294-298.
In order to improve the energy efficiency, energy certification plays an essential role allowing us to evaluate and compare buildings and their features related to demand, consumption and emissions. The aim of this work is to analyse the methodology used by current regulation to estimate the energy consumption from domestic hot water systems and its subsequent energy rating. The relationship of the results obtained with the different types of homes is studied according to their area and number of bedrooms, justifying how the area of the house has an excessive influence on the qualification obtained in the sanitary hot water parameter, favouring a better certification to larger homes.
Juan Lopez Asiain; Maria De Las Nieves Gonzalez Garcia; Carlos Moron Fernandez; Alejandro Payan DE Tejada. BUILDING ENERGY PERFORMANCE CERTIFICATING INFLUENCE OVER THE RESULTS OF DOMESTIC HOT WATER PARAMETER. DYNA 2020, 95, 257 -260.
AMA StyleJuan Lopez Asiain, Maria De Las Nieves Gonzalez Garcia, Carlos Moron Fernandez, Alejandro Payan DE Tejada. BUILDING ENERGY PERFORMANCE CERTIFICATING INFLUENCE OVER THE RESULTS OF DOMESTIC HOT WATER PARAMETER. DYNA. 2020; 95 (1):257-260.
Chicago/Turabian StyleJuan Lopez Asiain; Maria De Las Nieves Gonzalez Garcia; Carlos Moron Fernandez; Alejandro Payan DE Tejada. 2020. "BUILDING ENERGY PERFORMANCE CERTIFICATING INFLUENCE OVER THE RESULTS OF DOMESTIC HOT WATER PARAMETER." DYNA 95, no. 1: 257-260.
Nowadays, one of the most significant technological challenges is the decreasing dependence of carbon-based fuels and the polluting emissions into the atmosphere. In pursuit of that objective, the Directive 2010/31/UE from the European Commission, provided that all new buildings must be low energy consumption, nearly zero-energy. This Directive is being transposed into national law through the modification of CTE, Technical Building Code and RITE, Regulation of Thermal Installations in Buildings, both are pending to publish along this year 2018. According to the data from both the European Commission recommendations about net primary energy consumption at kWh/(m2/year) and the Development Ministry communicated in the EECN Congress, celebrated last December 2017, the outer skin, solar protection and ventilation of new buildings going to reach a very high level of efficiency, so energy consumption by domestic hot water will become very important. This change in residential buildings energy consumption profile, requires a detailed study of this system. This work studies, statistically, the materials more used in domestic hot water distribution systems, thanks to the data from last years gathered by Spanish Professional Associations both new and refurbishment Works. In a first step of this study, it is concluded that the metallic materials use has been reduced considerably, but nowadays these materials are used about in 20% of building works, despite their worst thermal transmission coefficient. We also know that the material more used is Cross-Linked Polyethylene, however, there are important differences over all the Spanish regions.
Carlos Moron Fernandez; Juan Lopez Asiain; María De Las Nieves González; Alejandro Payan DE Tejada. EVOLUTION OF THE MATERIALS USED IN DOMESTIC HOT WATER DISTRIBUTION SYSTEMS. DYNA 2019, 94, 390 -394.
AMA StyleCarlos Moron Fernandez, Juan Lopez Asiain, María De Las Nieves González, Alejandro Payan DE Tejada. EVOLUTION OF THE MATERIALS USED IN DOMESTIC HOT WATER DISTRIBUTION SYSTEMS. DYNA. 2019; 94 (1):390-394.
Chicago/Turabian StyleCarlos Moron Fernandez; Juan Lopez Asiain; María De Las Nieves González; Alejandro Payan DE Tejada. 2019. "EVOLUTION OF THE MATERIALS USED IN DOMESTIC HOT WATER DISTRIBUTION SYSTEMS." DYNA 94, no. 1: 390-394.
One of the most frequent defect in building is appearance of moisture. Due to the growing social awareness and environmental policy, it becomes necessary to evaluate the behaviour of a new construction materials regarding this kind of defects. This paper studies the behaviour of masonry mortars incorporating three types of recycled aggregates: concrete, ceramic and mixed, with dosages 1:3 and 1:4 to be compared to the behaviour of traditional mortars in terms of absorption by capillarity, rainwater penetration and water vapour permeability. The results show that under condition of water absorption by capillarity or heavy rains, ceramic recycled aggregate has the poorest behaviour due to its high mix water absorption. Moreover, water vapour permeability is higher in mortars performed with recycled aggregates, minimizing in this way the condensation that can be produced in interior spaces. Key words: masonry mortar, recycled aggregate, moisture, defect.
Carlos Moron Fernandez; Daniel Ferrandez Vega; Pablo Saiz Martinez; Francisco Fernandez Martinez. BEHAVIOUR OF MASONRY MORTARS FABRICATED WITH RECYCLED AGGREGATE TOWARDS MOISTURE. DYNA 2019, 94, 442 -446.
AMA StyleCarlos Moron Fernandez, Daniel Ferrandez Vega, Pablo Saiz Martinez, Francisco Fernandez Martinez. BEHAVIOUR OF MASONRY MORTARS FABRICATED WITH RECYCLED AGGREGATE TOWARDS MOISTURE. DYNA. 2019; 94 (1):442-446.
Chicago/Turabian StyleCarlos Moron Fernandez; Daniel Ferrandez Vega; Pablo Saiz Martinez; Francisco Fernandez Martinez. 2019. "BEHAVIOUR OF MASONRY MORTARS FABRICATED WITH RECYCLED AGGREGATE TOWARDS MOISTURE." DYNA 94, no. 1: 442-446.
En la actualidad existe una amplia gama de sistemas y materiales que se emplean como atenuadores del ruido de impacto, ofreciendo buenas prestaciones a la hora de evitar la transmisión de vibraciones a través de los forjados. En este trabajo, se han elaborado placas de mortero de cuatro centímetros de espesor con cuatro tipos de árido diferentes combinados con distintas tipologías de aislamiento. Aprovechando la menor densidad de los morteros elaborados con árido reciclado, se ha llevado a cabo una investigación en la que se propone sustituir el 100% del árido natural por árido reciclado para la fabricación de morteros empleados en el sistema de losa flotante, ya que ofrecen una solución más eficiente desde el punto de vista acústico. Los morteros elaborados con áridos reciclados de cerámica y mixto los que presentan la solución óptima para atenuar impactos producidos sobre la superficie, reduciendo hasta en un 20% la velocidad de transmisión de impactos frente a sus homólogos elaborados con árido natural.
D. Ferrández; P. Saiz; C. Morón; J. P. Díaz. Estudio del comportamiento de los morteros reciclados frente al ruido de impacto. Informes de la Construcción 2019, 71, 292 .
AMA StyleD. Ferrández, P. Saiz, C. Morón, J. P. Díaz. Estudio del comportamiento de los morteros reciclados frente al ruido de impacto. Informes de la Construcción. 2019; 71 (554):292.
Chicago/Turabian StyleD. Ferrández; P. Saiz; C. Morón; J. P. Díaz. 2019. "Estudio del comportamiento de los morteros reciclados frente al ruido de impacto." Informes de la Construcción 71, no. 554: 292.
This work presents a new application to detect vibrations in metallic structures based on low-cost sensors compatible with the Arduino platform that enables identification of points where the impact is produced, in order to facilitate inspection. If the impact is produced on a metal bar, the energy introduced in the system is spread through the material in the form of vibration. Thus, using standardized construction steel rods B500SD that can be considered homogeneous along entire section, it was possible to detect where the impact is produced, measuring delays of propagation of acoustic wave throughout the material. For that, it was necessary to place the accelerometers at the ends of the structure that enables an automatic and efficient way to determine the moment and the position of the impact. Hypothesis of supported beam was taken into consideration, obtaining for distances of 0.1 and 0.9 m with delay times of 500 μs.
Carlos Morón; Daniel Ferrández; Pablo Saiz; Alberto Morón. Automatic System for Detection and Positioning of Impacts in Metals Based on Arduino. Shock and Vibration 2019, 2019, 1 -7.
AMA StyleCarlos Morón, Daniel Ferrández, Pablo Saiz, Alberto Morón. Automatic System for Detection and Positioning of Impacts in Metals Based on Arduino. Shock and Vibration. 2019; 2019 ():1-7.
Chicago/Turabian StyleCarlos Morón; Daniel Ferrández; Pablo Saiz; Alberto Morón. 2019. "Automatic System for Detection and Positioning of Impacts in Metals Based on Arduino." Shock and Vibration 2019, no. : 1-7.
ResumenEn los últimos años, ha habido una gran controversia sobre cuál es la cantidad óptima que deben dormir los estudiantes para afrontar con éxito la jornada escolar. Así, por un lado, se ha realizado una revisión del marco teórico basado en las investigaciones y estudios de diferentes autores sobre qué es el sueño, cuáles son las características del sueño en la adolescencia y cómo afecta el sueño a la capacidad de aprendizaje en los adolescentes. Por otro lado, también se ha realizado un estudio sobre los hábitos de sueño a un grupo de adolescentes de entre 12 y 13 años de tres centros escolares de la Comunidad de Madrid, con una muestra de 420 estudiantes de 1º y 2º de E.S.O, comparando los resultados obtenidos con las investigaciones referenciadas en el marco teórico, para contrastar la validez de las mismas. Además, se han consultado los expedientes académicos de los alumnos, a fin de comprobar si la cantidad de horas de sueño es un factor decisivo a la hora de obtener mejores o peores calificaciones. En conclusión, los resultados muestran una relación entre las horas de sueño y el rendimiento académico, donde se aconseja dormir un mínimo de 7.5 horas en la etapa de primer ciclo de secundaria y deja entre ver que quizá sea necesario un reajuste de los horarios escolares debido a los hábitos de los estudiantes.AbstractIn recent years, there has been a great controversy over which is the optimum amount of sleep a student should get to face successfully a school day. Thus, on one side, there has been a review of a theoretical framework based on investigation and researches of different authors about what sleep is, which the characteristics of sleep in the adolescence are, and how sleep affects the capacity of learning in adolescences. On the other side, the research of sleep habits was carried out with a group of adolescences between 12 and 13 years old from tree educational centers of Madrid Community, with a sample of 420 students of the first and the second cycle of Compulsory Secondary Education, comparing obtained results with the researches referenced in the theoretical framework, in order to contrast the validity of these researches. Moreover, the school records of the students were consulted with an aim to check whether the amount of sleeping hours is a decisive factor to obtain better or worse scores. In conclusion, the results show a relation between sleeping hours and academic performance, recommending sleeping minimum 7.5 hours during the stage of the first cycle of secondary education and rising the possible necessity to readjust school timetable according to the habits of the students.
Carlos Morón; Daniel Ferrández; Pablo Saiz; Álvaro Pérez. Influencia de los hábitos de sueño en los alumnos de primer ciclo de Educación Secundaria = Influence of sleep habits in students of the first cycle of Secondary Education. Advances in Building Education 2018, 2, 9 -24.
AMA StyleCarlos Morón, Daniel Ferrández, Pablo Saiz, Álvaro Pérez. Influencia de los hábitos de sueño en los alumnos de primer ciclo de Educación Secundaria = Influence of sleep habits in students of the first cycle of Secondary Education. Advances in Building Education. 2018; 2 (3):9-24.
Chicago/Turabian StyleCarlos Morón; Daniel Ferrández; Pablo Saiz; Álvaro Pérez. 2018. "Influencia de los hábitos de sueño en los alumnos de primer ciclo de Educación Secundaria = Influence of sleep habits in students of the first cycle of Secondary Education." Advances in Building Education 2, no. 3: 9-24.