Conference Agenda

Seismic movements affect 25% of buildings worldwide, causing structural vulnerability; Peru, located in the Pacific Ring of Fire, makes its buildings highly vulnerable, which highlights the importance of evaluating seismic-resistant structural systems to mitigate risks and guarantee safety. The objective of the present study was to compare the seismic resistance behavior of a reinforced concrete structural system and a metallic structural system in the city of Chiclayo. For this purpose, a study was carried out in which a high-rise building was evaluated under two systems: reinforced concrete and steel, in accordance with the current regulations, evaluating the specific characteristics of the area and the regulations (loads, combinations, parameters, etc.) for each system using the ETABS v21 software. The results obtained showed that the height factor directly affected the lateral displacements, on the other hand, in the basal shear, the predominant value was that of the reinforced concrete structure with a value of 211.95kn compared to the steel structure with 201.15kn, likewise, the distortions between floors indicate that the reinforced concrete system presents a higher value of drift at each level. The ETABS analysis showed that the steel structure had better seismic behavior due to its flexibility and energy dissipation, while the concrete structures had higher stiffness and basal shear. The differences in lateral displacements favoured steel, however, both complied with the drift limits according to E030.

The development of construction projects involves the use of various materials of which the most used is concrete due to its properties. The production of concrete requires the exploitation of quarries for the extraction of aggregates, for this reason the objective of this research work was to evaluate the effects on the workability, compression and bending of a concrete f'c= 280 kg/cm2 replacing the coarse aggregate with crushed ceramic. In order to take advantage of waste from construction, because these ceramic waste are discarded in landfills, generating environmental pollution. The methodology applied by the approach was quantitative, applied and experimental. The samples prepared were 63 cylindrical specimens for compression tests, 63 beam-type specimens for bending tests. replacing coarse aggregate with crushed ceramic in sizes of 10 mm and 3/8”. And in percentages of 12%, 15%, 18%. Concluding a positive effect on the properties of the concrete with the replacement of 18% of crushed ceramic and size of 3/8” obtaining a compressive strength of 440.62 kg/cm2 and 105.61 kg/cm2 of flexural strength.

The present research focuses on evaluating the compressive strength of F´c=21 MPa using the maturity method with Type I, Sol, and Cemex cements in the city of Trujillo. Its main objective is to analyze the effectiveness and application of the maturity method in a controlled environment, such as a laboratory, following an experimental methodology. The total sample consists of 60 test specimens, of which 15 are for failure testing, 2 for sensors, and 3 for reserve. After conducting the tests, it was concluded that the Cemex cement performed best using the maturity method. The characterization of aggregates was determined, along with a mix design to achieve F´c=21 MPa. Regarding the maturity indices, the concrete made with Cemex cement stood out, reaching the required strength in a short time with a maturity index of 2759.8 °C·h. This was followed by Sol cement with a maturity index of 7646.5 °C·h, and finally, Type I cement with the same maturity index of 7646.5 °C·h. These findings ensure quality control and contribute to reducing construction time.

The general objective of this research is to determine the influence of the replacement of fine aggregate with copper slag on the properties of a concrete f'c = 210 Kg/cm2 in a fresh and hardened state. This research was applied with an experimental design, the sample It is composed of 24 4” x 8” cylindrical specimens. As part of the development of the research, mixtures were prepared for a standard concrete and mixtures with 10%, 20% and 30% replacement of fine aggregate with copper slag. The properties evaluated for these mixtures were consistency and resistance to compression. The results obtained for fresh concrete show that as the substitution of fine aggregate for copper slag increases, the consistency of the mixture goes from plastic to fluid. Regarding the properties of the concrete in the hardened state, the compressive strength of the different substituted mixtures was studied, where it was observed that the optimal value to replace the fine aggregate with copper slag is 10%, giving an increase in 16.9% with respect to the standard concrete, however, it was determined that the 20% and 30% mixtures gave similar results to the standard concrete, demonstrating that substitution within said ranges is safe.

The Tumbes River, located in northern Peru, faces constant challenges related to flooding and overflows, affecting infrastructure and adjacent communities. To mitigate these risks, cantilever retaining walls represent a viable solution. This article analyzes and compares AASHTO and Eurocode regulations for the design of such walls. Structural, safety and economic aspects are addressed, considering design parameters, materials and costs. The results demonstrate significant differences in the structural behavior and efficiency of the designs, providing recommendations to optimize the use of these regulations in the riverside defenses of the Tumbes River.

Concrete is an essential material in construction worldwide, but its production generates a high carbon footprint. A promising strategy to reduce this environmental impact is the development of sustainable concretes by replacing conventional aggregates with natural waste or industrial by-products. This Systematic Literature Review analyses the effect of steel slag and seashells on the mechanical properties of concrete. The literature search, based on the PICO methodology, found 2384 sources in the Scopus, EBSCOhost and Scilit databases. After applying eligibility criteria according to the PRISMA statement, 62 relevant articles were selected. The results show that steel slag is mainly used in ultra-high performance concretes, while seashells are more frequent in cellular concretes. Chemical analysis indicates that iron oxide (Fe₂O₃) is the predominant component in steel slag, while calcium carbonate (CaCO₃) predominates in seashells. The incorporation of steel slag significantly improves the mechanical strength and durability of concrete, while seashells contribute to improving its mechanical properties and reducing the risk of cracking. In conclusion, although the benefits of steel slag in green concretes are well documented, further research is required on the potential of seashells and the synergistic effect of both wastes in the manufacture of sustainable concretes.