Teks del Sud

EVALUACIÓN DE PROPIEDADES MECÁNICAS Y TÉRMICAS EN BALDOSAS DE HORMIGÓN CON AGREGADOS DE RESIDUOS PLÁSTICOS (EPS Y PEBD)

Andrés Emanuel Díaz — 2025-12-18

The management of plastic waste is a global environmental challenge. This research explores a sustainable solution by developing concrete tiles incorporating recycled plastic aggregates. An experimental methodology was designed, evaluating three mixes: a control mix (B₁) without waste, and two mixes with partial replacement of traditional aggregates by Expanded Polystyrene (EPS) and Low-Density Polyethylene (LDPE) waste (B₂ and B₃). The properties in both fresh (slump) and hardened state (flexural and compressive strength, absorption, density, thermal conductivity, and impact resistance) were analyzed following international standards. The results indicate that the mixes with plastic waste (B₂ and B₃) met regulatory requirements, showing a significant reduction in density (up to 14%) and thermal conductivity (up to 47%) compared to the control. Mix B₂ exhibited the best overall performance, with a flexural strength of 7.64 daN/cm² and 7.4% absorption. The study concludes that it is feasible to produce tiles with improved thermal insulation and adequate mechanical properties using EPS and LDPE waste, offering a viable alternative for waste valorization in the construction industry.

PAVIMENTOS DE MEZCLA ASFÁLTICA MODIFICADOS CON TiO2 Y SU APORTE A LA SUSTENTABILIDAD URBANA

Pablo Ariel Cabrera Ojeda — 2025-12-18

Urban growth has increased the use of asphalt pavements, which contribute to the formation of urban heat islands (UHIs) due to their low albedo. This study evaluates titanium dioxide (TiO₂)-modified asphalt mixtures to improve urban sustainability. A MAC F10 mixture with 2% dry-mixed TiO₂ was used, comparing it with a conventional mixture. Opto-thermal properties (albedo and emissivity) were measured experimentally, and thermal behavior was simulated with PLM-Term software under historical climatic conditions in the cities of La Plata and Salta (Argentina). The results demonstrated that the TiO₂-based mixture presented a higher albedo (0,17 vs. 0,10) and higher emissivity (0,97 vs. 0,91), resulting in a significant reduction in the total energy transferred to the environment. It is concluded that the incorporation of TiO₂ constitutes an effective technology to mitigate UCI, reduce energy consumption in refrigeration and contribute to environmental sustainability.

PREDICTION OF ELECTRICITY CONSUMPTION IN A PUBLIC BUILDING USING MACHINE LEARNING

Tomas Abel Concha Torres — 2025-12-18

Given that people spend a significant portion of their time in buildings, it is essential to design indoor environments that promote their health, well-being, and productivity. This could be achieved at the expense of the energy consumed by heating, ventilation, and air conditioning systems, which account for up to 56% of total building energy consumption. To reduce this consumption, strategies such as precooling or preheating could be beneficial, provided there is advanced information on the building's energy performance. In this work, machine learning techniques were applied to address gap filling in data series and predict electricity consumption at the Rector's Office building of the National University of Salta. Meteorological data from own stations, the National Meteorological Service, and satellite data were used. Using neural networks, missing data in the temperature and solar radiation series were filled, and 16 models based on deep learning were trained to predict electricity consumption at different time periods. Performance, prediction horizon, and computational cost were evaluated. The results obtained demonstrate a good predictive capacity of the selected model, with correlation values greater than 0.95 for 15-minute predictions and 0.75 for 6-hour predictions.

EVALUATION OF THE THERMAL BEHAVIOUR OF A SINGLE-FAMILY HOUSE BUILT WITH RAW EARTH IN VAQUEROS, LA CALDERA

Sol Araceli Ramírez — 2025-12-18

This study evaluates the thermal behaviour of a single-family dwelling built with quincha in Vaqueros, Salta, through continuous monitoring of indoor and outdoor temperature and relative humidity over a full year. The analysis was based on the ASHRAE 55 standard for adaptive comfort. The results indicate marked seasonal performance: during spring and summer, the dwelling remained within the thermal comfort range more than 75% of the time, while in winter, less than 25% of the hours met these criteria, highlighting the need for complementary heating strategies. In addition, significant regulation of indoor humidity was observed by the quincha walls, maintaining indoor values consistently lower than outdoor values, especially during the summer. The study concludes that quincha is an effective construction system for the warmer seasons of the region and it requires improvements to optimise winter comfort. These results provide a valuable basis for future simulations and energy rehabilitation proposals adapted to north-western Argentina.

MONITOREO HIGROTÉRMICO Y CONFORT EN CAPS DE SAN MIGUEL DE TUCUMÁN

amalita fernandez — 2025-12-18

El objetivo principal de este trabajo es caracterizar y diagnosticar la problemática del confort térmico en una tipología constructiva de Centros de Atención Primaria de Salud (CAPS) en San Miguel de Tucumán. Para ello, se investiga el comportamiento higrotérmico del edificio a través de monitoreos realizados durante las estaciones más críticas (verano e invierno), lo cual evidencia un desempeño higrotérmico deficiente de la envolvente. Los resultados muestran condiciones de inconfort térmico significativas para los ocupantes, con una alta insatisfacción especialmente durante el verano. Posteriormente, se valida la situación de confort utilizando los índices PMV y PPD, confirmando un bajo rendimiento que no cumple con los estándares deseables. Los hallazgos de este estudio aportan conocimiento relevante para el desarrollo de futuras estrategias de diseño que mejoren la eficiencia y habitabilidad de estas construcciones.

SOCIO-ENVIRONMENTAL MAPPING OF THE CITY OF SANTIAGO DEL ESTERO

Matías Ortega — 2025-12-18

Social cartography has emerged as a valuable tool for building participatory processes, capturing lived experiences in a given territory and offering the potential for critical reflection on a given habitat. The objective of this work is to highlight the main results of a collective mapping project, linked to the relevant socio-environmental issues and situations identified in the city of Santiago del Estero. Data generation was based on collective mapping, and the methodology used was qualitative and participatory. The most significant results relate to urban growth trends, mobility and accessibility, waste management issues, and social recreation and leisure practices, among others. The conclusion is that the collective mapping tool is appropriate for reflecting on the city, and georeferencing the information in future projects is being considered.