Conference Agenda

El estudio dispuso como objetivo general determinar la resistencia a la compresión del concreto f’c= 210 kg/cm2 con sustitución de arena de cuarzo por agregado fino al 10%, 15% y 20%; por lo cual, la investigación es del tipo aplicada con un alcance correlacional y un diseño experimental, teniendo consignado una muestra de 48 probetas que están agrupadas de la siguiente manera: 12 testigos de concreto patrón y 36 testigos de concreto con arena de cuarzo; así pues, considerando como técnica de recolección a la observación directa y como instrumentos utilizados fueron los protocolos de laboratorio validados por la Universidad Privada del Norte, obteniendo resultados de resistencia a los 28 días con arena de cuarzo en porcentajes de 0%, 10%, 15% y 20% se adquirió 254.78 kg/cm², 333.76 kg/cm², 347.78 kg/cm² y 355.46 kg/cm²; de esta manera, se dedujo que esta materia prima como sustituto del material granular fino aumentó la resistencia mecánica un 31.00%, 36.50% y 39.52% respecto al concreto de control. Por lo tanto, en base a los valores obtenidos se comprueba la hipótesis planteada, puesto que, el concreto con arena de cuarzo en diferentes porcentajes superó de forma significativa el 25% de resistencia.

This research was conducted in the city of Trujillo to evaluate the influence of partial replacement of fine aggregate with recycled glass on the mechanical properties of concrete with a design strength of f’c = 280 kg/cm². Using a quantitative approach and a quasi-experimental design, 120 cylindrical specimens (100x200 mm) were tested for compressive strength at 7, 14, 28 and 56 days, five core samples were drilled to assess the compressive strength of slabs at 28 days, and 60 prismatic specimens (75x75x285 mm) were evaluated for length change at 7, 14, 28 and 56 days. The greatest increase in compressive strength was observed in the C10V treatment, achieving improvements of 8.35% and 14.21% at 28 days under standard curing and sulfate-modified curing (S1), respectively, meeting ASTM C39 and ACI 318-19 standards. Additionally, the C10V treatment reduced length change by up to 35% at 28 days. However, under sulfate-modified curing (S1), the C20V concrete and the control concrete exhibited better performance. All treatments remained within the limits recommended by ACI 201.2R-01, staying below 0.02% up to 14 days and 0.20% at 28 days as recommended by ASTM C126, indicating that expansion does not compromise concrete durability. In conclusion, the partial replacement of fine aggregate with recycled glass is viable, as it enhances compressive strength and reduces length change, contributing to longer concrete durability while improving some of its mechanical properties.

The objective of this work was to determine the effects of the SikaCem plasticizing additive in concrete with a 15% decrease in water, by analyzing its properties in fresh and hardened state and comparing them with normal concrete. Initially, the selection of our raw materials (fine and coarse aggregate) was carried out, which were subjected to tests of granulometry, moisture content, absorption, specific and unit weight, in order to subsequently design the concrete mix. After that, we carried out the tests according to the standards that will be mentioned in a later chapter. As a result, the incorporation of plasticizing additive generates an increase in mechanical properties such as compressive strength by 23.49% by the destructive method and in the sclerometry test it increases by 16.11%. Likewise, we can indicate that concrete with plasticizing additive reaches a temperature of 1.5 ° C less than normal concrete. In the case of the percentage of voids, the samples with plasticizing additive obtained a lower value, this being 1.66% less, and in absorption after immersion in water and after immersion and boiling, lower values ​​than those obtained in normal concrete. The workability increased in the concrete with plasticizing additive when performing the Slump test, which gave us a higher value than in normal concrete. It was concluded that the plasticizing additive decreases the absorption capacity, the amount of voids, the temperature, but increases the workability and the compressive strength.

This study aimed to determine the optimal percentage of crude palm oil in asphalt mixtures during production to mitigate temperature effects, using the Marshall test conducted in 2021. The research employed a deductive, quantitative approach with a retrolective and longitudinal data collection process within an experimental design framework.

The findings indicate that conventional asphalt exhibits the highest specific gravity, but as the proportion of crude palm oil increases, specific gravity also rises. Regarding air voids, the null hypothesis was accepted, signifying that palm oil incorporation did not cause statistically significant variations in void content. A similar trend was observed in flow measurements, where no substantial differences were detected across experimental groups.

Furthermore, the study revealed that the most significant number of air voids occurred at 1% and 1.5% palm oil concentrations, although these values did not differ markedly from other tested formulations. The highest flow values corresponded to conventional asphalt, but an increase in palm oil concentration led to a proportional rise in flow. However, the corrected stability of the asphalt mixture decreased as the palm oil content increased, with conventional asphalt demonstrating the highest stability. Additionally, the stiffness index followed a declining trend as palm oil concentration rose, indicating a reduction in the mixture’s structural rigidity.

The influence of chemical agents in soft soils on the durability of continuous foundations in social housing modules is a topic of growing importance. This study experimentally analyzed the chemical composition of soil samples, evidencing acidity levels such as the hydrogen potential (pH), chlorides, and sulfates. Furthermore, the compressive strength of the extracted cores from the continuous foundation was evaluated, showing adequate results despite a slight decrease compared to optimal standards. Additionally, carbonation tests revealed a pH above 9.5, demonstrating good resistance to corrosion by carbon dioxide (CO2). These findings underscore the necessity of conducting preliminary soil evaluations prior to construction, highlighting the importance of appropriately selecting materials to ensure structural durability. Overall, the results indicate that under the studied conditions, sandy soils with negligible moisture have minimal influence on the deterioration of concrete foundations, thereby ensuring the stability of buildings in such areas. This research paves the way for future investigations into the interaction between concrete and different soil types in contexts with aggressive chemical agents.

Distribution logistics is important because its mismanagement causes monetary losses and inefficient production processes, being essential to expand knowledge on the subject to facilitate the optimization of the supply chain and generate proposals for improvement. Therefore, the objective of the research is to analyze the deficiencies in the distribution logistics of a construction company in the city of Trujillo, year 2024. It is carried out with a qualitative approach, case study design, descriptive scope and uses analytical, inductive and hermeneutic methods. It employs a mapping of theoretical and analytical phase, being the subjects of the study scenario 3 chiefs of the logistics area, examined with the instruments of in-depth interview guide and observation guide. The results express that productivity contains a lack of integral strategy of logistics optimization and digital transformation, logistics costs have scarce integral strategy of logistics optimization and delivery time needs an integral strategy of logistics optimization and digitalization. Finally, it is concluded that the construction company contains deficient aspects in productivity, logistics costs and delivery time that need to be optimized for proper logistics performance.