The traditional evaluation approach (based on practices and exams) domains at engineering courses. In 2020 and 2021, the COVID-19 pandemic forced the adaptation of teaching materials and methodology of these courses; however, the form of evaluation remained practically the same. In the Mechanics for Engineers (MI) course, the course evaluation was online but consisted of four (4) qualified practices and two (2) common (synchronous) exams. In 2022, within the framework of an educational innovation project, it was decided to implement an evaluation for learning strategy in this course. It was defined that formative evaluation would have 50% of the total course grade and that summative evaluation (that is, the exams) would have the remaining 50%. Also, it was determined that formative activities would repeat on a weekly basis. This article presents the design of the evaluation strategy, the...

In recent years, graphene oxide has become one of the most innovative and promising nanomaterials for civil engineering studies. Despite its potential benefits, the effects of graphene oxide on concrete properties have not been extensively studied. In the research, an experimental study was carried out to evaluate the impact of different doses of graphene oxide (0.08%, 0.10%, and 0.12% by weight of cement) on the compressive strength of concrete and the properties of fresh concrete (Temperature, Settlement, Unit Weight, Air Content). The evaluation was carried out both after 7 and 28 days of concrete curing. The results obtained in the research indicate that, of the doses tested, the mixture containing 0.08% graphene oxide is the most effective in improving the compressive strength of concrete after 7 days, while at 28 days the dose of 0.10% GO is the most appropriate since it achieved a...

The main objective of the article is to assess the influence of using recycled aggregates on the compressive strength of concrete (f'c = 175 kg/cm2) at the age of 7 and 28 days. Specifically, the study focuses on the partial replacement of natural coarse and fine aggregates with recycled counterparts. To achieve this, recycled concrete from the demolition of columns in Villa el Salvador, Lima—Peru, was utilized as a substitute for the natural coarse aggregate. Additionally, ground glass sourced from glass shops in the Center of Lima was employed as a substitute for the natural fine aggregate. Three mixtures were designed following the ACI method: CC, representing conventional concrete; D1, denoting concrete with a 30% substitution (20% recycled concrete and 10% ground glass); and D2, indicating concrete with a 50% substitution (30% recycled concrete and 20% ground glass). Subsequen...

Earthquakes are a significant threat in countries with high seismic activity such as Peru, Chile, and Colombia, where the application of earthquake-resistant regulations is essential to ensure structural safety. The objective of this research is to determine the discrepancies in the use of criteria and designs of the earthquake-resistant regulations E.030 versus Nch433 and NSR-10, as well as how these affect loads, drifts, and accelerations. This is obtained through a comparative analysis of basal shear forces, story drifts, and spectral accelerations. Therefore, a model of a two-story confined masonry house located in San Juan de Miraflores, Lima, is made using Etabs software and complying with the minimum requirements of standard E.070. NSR-10 showed the greatest strength. basal shear with a value of 422.94 Tonf on both the “X” and “Y” axes by means of analysis Linear static. O...

This research aims to contribute to the study of seismic behaviour by evaluating the seismic performance of reinforced concrete wall structures through the development of a representative archetype. This archetype was elaborated based on the analysis and systematisation of ten structural plans of real buildings that share similar characteristics. The methodology followed includes the non-linear static analysis to determine the data that will help to plot the capacity curve of the structure. This process is carried out with the Stera 3D software that provides the data of the capacity curve, then the demand curves or demand spectra are elaborated according to the indications of the vision 2000 committee. Subsequently, the structural performance point is determined through the intersection between the capacity curve and the demand curves, which makes it possible to identify the level of per...

The increasing trend toward slender and low-stiffness pedestrian bridge designs has significantly raised their susceptibility to dynamic excitations induced by pedestrian activity. One of the most critical vibration phenomena in such structures is synchronous excitation, which occurs when the walking frequency of pedestrians coincides with the natural frequency of the bridge. This resonance condition can amplify the structural response, negatively impacting both user comfort and overall structural performance. These challenges are particularly relevant in densely populated urban environments such as Lima. In this study, the dynamic behavior and comfort performance of the “Católica” pedestrian bridge were evaluated through in-situ vibration measurements using a geophone-based seismograph. The recorded data were analyzed based on the SETRA guideline, which classifies comfort into four...