• Enhancing CanSat Mission Safety: An Autogyro-Based Landing Solution

  Villacorta, Lalo; Chunga, Fabrizio; Aquino, Giovanni; Salvador, César D. (Springer Science and Business Media Deutschland GmbH, 2025-01-01)

  This paper presents an autogyro system for the safe landing of a class of compact satellites in miniature called CanSat. The proposal ensures the safe landing with fragile payloads by protecting the essential electrical and mechanical systems. The proposed autogyro system, consisting of six blades, is designed to reduce the impact force at ground by means of generating a passive lift force during descent that decelerates the CanSat in free fall. In addition, a decoupling mechanism, activated via telemetry, allows for the separation of primary and secondary payloads during descent, facilitating the deployment of the autogyro system. The methodology of this paper encompasses the autogyro design, its construction, its integration with a CanSat, its validation through data colection in free fall, and the analysis of results. Free-fall experiments were conducted from drones and buildings in close to wind-free conditions. The results showed that the optimal deployment of the autogyro system reduced the descent speed and protected the payload. The maximum deceleration registered during free fall was 4.94 ms-2 in 0.37 s. Future research may explore improvements in blade design and testing in various environmental conditions by means of sensing additional degrees of freedom during the free-fall dynamics.

  Acceso restringido temporalmente
• Reducing Deviations in Weekly Scheduling At the Finishing Stage of Multi-Family Buildings by Implementing a Model Guide for Digital Agreement Management

  Dominguez, Jheremy; Yajahuanca, Maria; Barraza, Giuliana (Avestia Publishing, 2025-01-01)

  The article addresses the problem of deviations in the weekly schedule during the finishing stage of multifamily projects. The lack of effective methodologies to manage agreements between stakeholders generates delays, cost overruns and coordination problems. A model guide for the digital management of agreements was developed and implemented, using the ClickUp tool to record, assign and track commitments in real time. After its application, an increase in compliance with planned activities (77.27%), a reduction in rescheduling (18.18%) and an increase in the productivity of key stakeholders was observed. The results demonstrate that the digitization and structuring of agreements significantly improves efficiency and coordination in the critical stages of the project.

  Acceso abierto
• Comparison of Seismic Performance Levels of Five-Story Limited Ductility and Confined Masonry Structures, Lima, Perú

  Bendezu Romero, Lenin Miguel; Pabón, Deivy Hernández; Rufino, Yedsem Nuñez; Lazo, Malena Alessandra Serrano (Avestia Publishing, 2025-01-01)

  This study evaluates the seismic behavior of a five-story multifamily building by comparing two structural systems: Limited Ductility Walls (LDW) and Confined Masonry Walls (CMW). The structural models were developed using Estera 3D software, and the analysis was carried out exclusively through nonlinear static analysis (pushover). Four levels of seismic demand were considered: frequent, occasional, design, and maximum earthquakes. Both systems achieved the same structural performance levels according to code-based criteria: full operation for the frequent earthquake; operation with minor damage for the occasional and design earthquakes; and life safety for the maximum earthquake. However, quantitative results show better performance for the LDW system. For the design earthquake, the LDW system exhibited a maximum base shear of 1141.36 tons and a top-level displacement of 7.098 cm, while the CMW system reached 2371.63 tons and 2.9696 cm, respectively. In terms of spectral acceleration, LDW registered 935.20 gal compared to 1098 gal for CMW. For the maximum earthquake, the LDW system reached a displacement of 10.68 cm and a base shear of 1272.15 tons, whereas the CMW system reached 8.0686 cm and 2291.71 tons. These results indicate that, although both systems meet the established performance objectives, the LDW system demonstrates more efficient structural behavior and greater energy dissipation capacity under severe seismic events.

  Acceso abierto
• Procedure to Ensure On-Time Delivery of Materials in Multifamily Housing Construction Projects Using Just-In-Time and Kitting In Small Construction

  De la Cruz Valdivieso, Alfredo Félix; Albornoz, Kelvin Eli Salinas; Roman, Karem Ulloa (Avestia Publishing, 2025-01-01)

  Construction companies are responsible for purchasing materials for the execution of construction projects, which consist of different stages; however, many times the materials do not arrive on time at the construction site. The material supply process is important within construction projects as it directly impacts the budget and schedule of the work. However, one of the most influential factors causing the delay in the delivery of material is the lack of a logistics plan for the supply of material in small companies. However, this leads to delays in the progress and delivery of the work. For this reason, this research focuses on ensuring the delivery time of construction materials in small construction companies for multi-family housing construction projects, specifically in the supply of materials through the use of the Just in Time and Kitting methodology, applying the use of an ERP. In this research, the following methodology is followed: (A) registration and analysis of information through expert judgment, (B) determination of the conventional material supply process in small construction companies, (C) development of the new supply process and (D) implementation of the new material supply process using the JIT and Kitting methodology. Finally, the result is a reduction in the delivery time of materials in the supply process, the metric being the average delivery time. In addition, a better management of the material supply process is obtained, in the logistics part. And the perception of the participants improved with the implementation of the new process. It is mainly concluded that the methodology used allows to ensure the delivery time of material, thus reducing the time in said process.

  Acceso abierto
• Reducing Subcontractor Progress Monitoring Time on Multifamily Building Finishes Using a BIM-Based Procedure

  Bazán, Darwin; Díaz, Leonardo; Ulloa, Karem (Avestia Publishing, 2025-01-01)

  In multifamily project construction, specialty subcontracting is common, but monitoring subcontractors, especially during finishing, presents significant challenges due to manual methods that are time consuming, make it difficult to detect deviations, and result in cost overruns and delays. This research proposes an automated monitoring procedure using a BIM model that integrates tools such as Revit, Navisworks, MS Project and Trimble Connect. The methodology includes four stages: analysis of information through surveys, identification of the traditional procedure in three companies, development of the new automated approach and validation in a pilot project. The results show a 42.4% reduction in daily monitoring time for subcontractors and a 41.4% reduction for technical personnel, in addition to improved access to real-time information. This optimizes coordination, reduces errors and ensures compliance with deadlines, significantly improving resource management in multifamily projects.

  Acceso abierto
• Procedure to Improve Risk Identification Inbasement Excavation Using BIM and GIS in Multifamily Housing Projects

  Baltodano, Junior Bardales; Zevallos, Nick Jhordan Chavez; Román, Karem Asthrid Ulloa (Avestia Publishing, 2025-01-01)

  This study proposes a comprehensive guide to improve safety planning in basement excavation projects through the integration of BIM (Building Information Modeling) and GIS (Geographic Information Systems). The guide focuses on training personnel and applying these tools in selected projects, addressing deficiencies in safety planning in Peru. The methodology includes the creation of three-dimensional models and geospatial analysis to anticipate and mitigate risks, optimizing data management and risk visualization. The implementation of BIM and GIS in a multi-family project in Lima showed a significant improvement in safety, reducing incidents from 9 to 1 in basement 4 compared to basement 3. Personnel training increased from 85% to 100%, and safety perception improved, with a reduction from 25% to 8% in reported risk conditions. The guide also reduced minor incidents during excavations by 20%. Validation of the methodology demonstrated an average reduction of three days in response to potential risks, highlighting the effectiveness of BIM and GIS in safety planning. Personnel satisfaction with the guide reached 85%, compared to 40% with traditional methods, emphasizing its utility in enhancing safety and efficiency in basement excavation.

  Acceso abierto
• Comparison of the FEMA P-154 Methodology with Seismic Analysis in the “Galería Tradición” of Cercado de Lima

  Lenin Bendezú, R.; Morales, Andre; Andrade, Carlos; Serrano, Malena (Avestia Publishing, 2025-01-01)

  The seismic vulnerability of buildings with considerable age represents a crucial challenge for urban resilience in a historic city like Lima. In this research, a sample of 30 publicly accessible galleries within the Cercado de Lima was evaluated. These structures were built with now-obsolete structural systems and are subject to deteriorated conditions. The FEMA P-154 methodology was applied to conduct rapid visual inspections and to classify the structures according to their level of seismic vulnerability based on the score established by the format. Additionally, a gallery with a critical FEMA score was selected for structural modeling in ETABS using previously scaled historical seismic records, following the guidelines of the E.030 Seismic Design Code. A Schmidt hammer test was also conducted to estimate the concrete strength of the selected building. The results show that more than one-third of the buildings exhibit high vulnerability and that the drifts obtained in the dynamic analysis exceed the limits established by the E.030 code. The FEMA P-154 methodology proved to be an effective tool for prioritizing structural interventions in urban contexts with limited resources.

  Acceso abierto
• Damage States and Seismic Performance Levels of a Three-Story Confined Masonry Structure, Lima, Peru

  Lenin, Bendezu R.; Piero, Gomez R.; Jerico, Yshtay P.; Malena, Serrano L. (Avestia Publishing, 2025-01-01)

  This research addresses the issue of self-construction in the district of Lurigancho-Chosica, using the Asociación Pro Vivienda Paz y Desarrollo San Pedro y San Pablo as a case study. In this area, structural deficiencies are identified due to the use of non-standard materials and the absence of technical design. As a solution, the design of a three-story confined masonry dwelling is proposed, complying with the Peruvian National Building Code (RNE). Field data was collected from 15 representative homes using data collection forms to identify the number of projected floors and typical lot dimensions (240 m2). Based on this, a three-level confined masonry dwelling was designed, applying habitability and structural safety criteria according to standards A.020, E.030, and E.070 of the RNE. The structural design was carried out through a linear static analysis using ETABS software, determining dimensions and reinforcement of main elements. Then, the nonlinear behavior of the structure was evaluated using STERA 3D software, applying a nonlinear time-history dynamic analysis with seismic records scaled to the design spectrum (Standard E.030) using a seismic reduction factor R = 1. From the obtained interstory drifts, structural damage levels were classified according to the criteria of Zavala et al. [1], allowing the estimation of the dwelling's seismic vulnerability. Finally, structural plans were developed. The proposed design complies with current regulations and demonstrates good structural performance under severe earthquakes, representing a safe and technically reliable solution to the deficiencies observed in the self-construction context of the study area.

  Acceso abierto
• Use of BIM 4D Models to Improve the Dynamism of Construction Layout Planning in the Structural Stage of Multifamily Housing in Metropolitan Lima

  Huacre, Yhoel; Saldaña, Adalberto; Ulloa, Karem (Springer Science and Business Media Deutschland GmbH, 2025-01-01)

  Multifamily housing projects are developed in different stages of construction, each of which requires a specific site layout. This construction layout is a fundamental tool for planning the physical distribution of temporary installations at the worksite, ensuring order that does not disrupt workflows and maintains productivity. However, one of the main causes of inadequate layout planning is the poor dynamic analysis resulting from using a static layout, traditionally represented in AutoCAD drawings. For this reason, this research focuses on improving the dynamism of site layout planning in multifamily housing projects in Metropolitan Lima; specifically, in the structural stage, using 4D BIM models. The methodology used in this study is developed through the following steps: Analysis of the information gathered from the interviews and surveys conducted with experts; Determination of the traditional site layout process of the three evaluated projects; Development of the 4D BIM model; and Implementation of the model in the selected project. Finally, the implementation of the proposed 4D BIM model in the project results in a significant improvement of the dynamism in the temporary works planning, since it allows visualizing the relocations of temporary facilities during the project simulation and allows detecting temporary interferences. In addition, a more exhaustive analysis of the relocations of the temporary facilities on the job site is achieved, which facilitates better planning of the site layout.

  Acceso abierto
• Procedure to Improve the Confidence in the Selection of Design Equipment Subcontractors by Implementing Set Based Design (SBD) and Choosing by Advantages (CBA) Methodologies in Multifamily Building Projects

  Celestino Romero, Milagros; Llontop, Grecia Gonzales; Román, Karem Ulloa (Springer Science and Business Media Deutschland GmbH, 2025-01-01)

  The selection process of design team subcontractors by real estate companies is crucial in construction projects, directly affecting the quality and efficiency of the final results. However, the lack of time to evaluate potential subcontractors can lead to inadequate selection and negatively impact the project development. This study proposes an innovative approach to improve confidence in the selection processes of design team subcontractors in multifamily building projects by implementing Set Based Design (SBD) and Choosing by Advantages (CBA) methodologies. These methodologies, supported by Excel Macros programming and data visualization in Power BI, aim to automate and optimize the selection process, reducing human intervention. The study follows these steps: (1) information registration and analysis by experts, (2) determination of the conventional subcontract selection process in the evaluated projects, (3) development of a new selection process based on SBD and CBA, and (4) implementation of this new process through Excel Macros programming applying SBD and CBA. The integration of SBD and CBA seeks to improve the transparency, reliability, and efficiency of the process, facilitating faster and more informed decisions. The results of the study show a 36% improvement in the confidence index, demonstrating the efficiency of the selection process. These findings support the automation of the selection process and highlight its contribution to a more accurate and efficient selection of subcontractors.

  Acceso abierto
• Validation of an Instrument to Measure the Level of Safety Culture in Peru

  Gutiérrez-Falcón, Pablo; Velásquez-Ayala, Eduardo (Academy of Medical and Health Sciences of Catalonia and the Balearic Islands, 2025-01-01)

  Objective: Workplace safety culture plays a critical role in preventing occupational risks and improving worker well-being. However, despite existing regulations, its implementation remains inconsistent in various industries. This study aims to validate an instrument for measuring the level of safety culture in Peru to identify critical improvement areas and support evidence-based strategies. Method: A three-part validation was conducted: selection of the instrument through a review of the scientific literature, qualitative validation through expert judgment, and quantitative validation via a pilot test with 42 workers. Reliability was assessed using Cronbach’s alpha and McDonald’s omega, while construct validity was examined using Exploratory Factor Analysis with Unweighted Least Squares and Promax rotation. Results: The validated instrument consists of 16 questions grouped into five dimensions: a) active participation in safety, b) awareness and compliance with safety regulations, c) risk knowledge and safety training, d) concern for safety and adherence to procedures, and e) prevention and communication about safety. The final model demonstrated good internal consistency (Cronbach’s α = 0.822, Omega = 0.83) and a stable factorial structure, explaining 75.79% of the variance. Conclusions: This validated questionnaire is a reliable tool for assessing safety culture in companies in Peru, allowing organizations to identify weaknesses and implement targeted safety interventions.

  Acceso abierto
• Bioremediation Potential of a Non-Axenic Cyanobacterium Synechococcus sp. for Municipal Wastewater Treatment in the Peruvian Amazon: Growth Kinetics, Ammonium Removal, and Biochemical Characterization Within a Circular Bioeconomy Framework

  Cabezudo, Remy G.; Castro, Juan C.; Castro, Carlos G.; Rodriguez, Hicler N.; García, Gabriela L.; Vizcarra, Paul M.; Ruiz-Huamán, Carmen; Cobos, Marianela (Multidisciplinary Digital Publishing Institute (MDPI), 2025-06-01)

  Effective wastewater management is critical for mitigating environmental and health impacts in ecologically sensitive regions like the Peruvian Amazon, where rapid urbanization has led to increased discharge of nutrient-rich effluents into freshwater systems. Conventional treatment methods often fail to address nutrient imbalances while generating secondary pollutants. This study aims to evaluate the bioremediation potential of a non-axenic cyanobacterium, Synechococcus sp., isolated from the Amazon Basin, for municipal wastewater treatment within a circular bioeconomy framework. The strain was cultivated in different concentrations of municipal wastewater (25%, 50%, 75%, 100%) from Moronacocha Lake in the Peruvian Amazon to assess growth kinetics, ammonium removal efficiency, and biochemical composition. The cyanobacterium exhibited optimal performance in 25% wastewater, achieving the highest specific growth rate (22.8 × 10−2 μ·day−1) and biomass increase (393.2%), exceeding even the standard BG-11 medium. This treatment also demonstrated exceptional ammonium removal efficiency (95.4%) and enhanced phycocyanin production (33.6 μg/mg, 56% higher than the control). As wastewater concentration increased, both growth parameters and removal efficiency progressively declined. Biochemical analysis revealed that higher wastewater concentrations resulted in decreased protein content and increased lipid accumulation in the biomass. These findings demonstrate the dual potential of Synechococcus sp. for effective wastewater remediation and production of valuable biomass with modifiable biochemical characteristics, offering a sustainable approach for wastewater management in the Peruvian Amazon region.

  Acceso abierto
• Seismic Analysis of a Two-Story Confined Masonry House: Comparative Study of Seismic-Resistant Standards E.030, NSR-10 and Nch433

  Lenin Bendezú, R.; Freccia Condor, T.; Roiser Quispe, G.; Serrano, Malena (Avestia Publishing, 2025-01-01)

  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. On the other hand, the highest incidence of drifts with respect to their maximum permissible drifts was obtained with the E.030 standard with a value of 4.905% by linear static analysis and the highest incidence by spectral modal analysis was obtained with the same standard with a value of 5.31%. These significant differences in shear forces at the base are mainly due to the different expressions and criteria used for calculating shear, in addition to the different considerations for the use of loads in buildings. Standards E.030 and NSR-10 for calculating shear forces at the base in linear static analysis use an expression obtained from their spectra; however, the Chilean standard NCH433 does not use an expression based on its spectrum, but rather a completely different formula.

  Acceso abierto
• Comparative Spectral Dynamic Analysis of Reinforcement with Buckling Restrained Braces and Fluid Viscous Dampers for an Irregular 11-Story Building

  Olivares, Marco Antonio Ccota; Dueñas, Renzo Nino Tomás; Porras, Franz Emmanuel Estrada (Avestia Publishing, 2025-01-01)

  This study presents a comparative spectral dynamic analysis between the use of Buckling Restrained Braces (BRB) and Fluid Viscous Dampers (FVD) in a configuration, applied to an irregular 11-story building. The effectiveness of both systems in reducing inelastic drifts and torsions was examined, considering the irregularities in height and plan. The results indicated that, without reinforcement, the building exhibited inelastic displacements that exceeded the permissible limit established by the Peruvian standardE.030. The implementation of BRB and FVD significantly reduced these displacements, improving the seismic response of the structure. This analysis allowed for the determination of which damping system provides better results in stiffness and seismic energy dissipation.

  Acceso abierto
• Retrofit Proposal for a 70-Year-Old Educational Building in a High-Seismicity Zone

  Apaza, Diego; Millones, Víctor; Rivas, Gram (Avestia Publishing, 2025-01-01)

  This article analyses the structural behaviour of an educational pavilion more than 70 years old in a highly seismic area, with damage to beams and columns attributed to the current use of the roof as a warehouse, in addition to having a high probability of collapse according to the FEMA P-154 seismic vulnerability study. Diamond extractions were carried out based on the ASCE 41-06 standard to obtain the compressive strength of the columns and beams. After the tests, linear and nonlinear analysis were performed based on the E.030 and ASCE 41-17 standards, respectively. The structural modelling confirmed non-compliance with the maximum distortion of 7/1000 allowed by the standard for the Y-axis gantry system. Therefore, RC jacketing was proposed as a reinforcement alternative according to the UNAM reinforcement guide and the IS 15988:2013 standard. The encasement of columns along the Y-axis reduced the drift by 58%, while the encasement of beams resulted in a 45% reduction. However, when implemented separately, neither of the seen casements met the regulatory limit, prompting the adoption of a combined encasement solution, which achieved an 80% reduction. Whereas the pushover analysis indicated that in the event of frequent and occasional earthquakes, the reinforced structure would be fully operational, which shows the importance of developing a reinforcement plan at the superstructure level addressed in this research, which not only offers a reinforcement solution, but also serves as a reference for similar initiatives in other countries.

  Acceso abierto
• Parametric Seismic Response of Base-Isolated Reinforced Concrete Silos

  Portal, Piero H.; Fernandez-Davila, Victor I. (Avestia Publishing, 2025-01-01)

  Silos are vulnerable structures during severe seismic events due to their slenderness and their interaction with stored material. This investigation presents the results of a special structure that incorporates a basal seismic isolation system, such as the Triple Friction Pendulum System (TFPS). A parametric study was conducted on eight models of reinforced concrete silos to evaluate the effectiveness of TFPS isolators in mitigating the effects of various parameters on their seismic response. This research makes significant contributions by identifying parameters that affect isolated silos, providing valuable insights into their seismic behaviour. The silos were modeled and validated by comparing the forces obtained from a modal spectral analysis with analytical forces from a previous study, achieving acceptable errors for the research objectives. Finally, a nonlinear dynamic time history analysis was performed using seven seismic records, selecting one as critical due to its peak acceleration at the start. The study determined that TFPS isolators efficiently reduced the influence of the analyzed parameters in slender silos, allowing their omission in non-critical seismic events for isolated structures. Compact silos exhibited reduced effectiveness due to uplift related to their compact design and the interaction between the stored material and the structure. This necessitates a thorough evaluation of the analysed parameters. In critical case, the full slender silo exhibited no increase in seismic response due to the stiffness contribution of the stored material. Conversely, empty slender silos showed increases because the force transfer in the final Phase of TFPS isolators became critical without the stiffness contribution of the stored material. Compact silos exhibited a similar seismic response for non-critical earthquakes, but the response was amplified due to significant lateral displacements.

  Acceso abierto
• Seismic Performance Evaluation of a 10-Story Structural Wall Building under Severe Earthquakes in Lima, 2025

  Lenin Bendezú, R.; Nick Huaranga, V.; Ficher Llanos, M.; Serrano, Malena (Avestia Publishing, 2025-01-01)

  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 performance achieved. The results obtained show that the archetype analysed achieves a different performance level for each earthquake that generates a different demand curve. This approach allows a more accurate understanding of the seismic behaviour of similar buildings, providing useful tools for decision making in structural design and seismic strengthening.

  Acceso abierto
• Improving the Compressive Strength of Concrete with Recycled Ground Glass

  Ccente, Kevin; Tello, Jhon; Eyzaguirre, Carlos (Avestia Publishing, 2025-01-01)

  This paper explores the use of recycled ground glass as a partial substitute for sand in concrete mixtures, aiming to enhance its mechanical properties, specifically compressive strength. Mixtures with glass replacements of 15%, 20%, and 25% were developed and tested, evaluating their performance at 7, 14, and 28 days. Experimental results indicate that using 15% ground glass increases compressive strength by 4.91% compared to standard concrete and improves workability without significantly affecting cohesion. In contrast, higher glass percentages increase the mixture's porosity, reducing its density and strength. Furthermore, the economic analysis shows a cost reduction of up to 1.94% with this optimal proportion. The research concludes that incorporating ground glass is a sustainable and economically viable alternative, as it promotes waste reuse and reduces the demand for natural sand, thereby mitigating the environmental impact associated with construction.

  Acceso abierto
• Guide for the Optimization of Material Storage during the Structural Phase of Educational Projects through the Application of the ABC Methodology

  Caballon, Judith De la Cruz; Morales, Jorge Luis Trujillo; Eléspuru, Giuliana Barraza (Avestia Publishing, 2025-01-01)

  This article presents a guide for optimizing material storage in educational infrastructure projects, specifically during the structural phase, using the ABC methodology. The study addresses the problem of poor management and placement of construction materials in warehouses, which negatively impacts operational efficiency and costs. A total of 172 stored materials were analysed in an October project, 86 of which were used. The materials were classified into three categories: A (11 materials), B (26 materials), and C (49 materials), representing critical values for prioritization and efficient distribution. The methodology includes an ABC analysis, a Pareto diagram, and warehouse modelling in Revit, demonstrating how redistribution improves access times, inventory control, and reduces the rate of obsolete materials. The results highlight the feasibility of implementing this guide in similar projects, promoting resource management.

  Acceso abierto
• 

  Mechanical Performance of Concrete with Graphene Oxide: Evaluation of Compressive and Splitting Tensile Strength

  Montoya, Ismael Eliú Rodas; Kam, Gabriela María Vallejos; Torres, Pablo Jhoel Peña (Avestia Publishing, 2025-01-01)

  Concrete is currently one of the most widely used materials in the world, but its production involves the emission of significant amounts of CO2 due to cement manufacturing. To address this global issue, various materials and methods have been explored. In this context, the incorporation of graphene oxide (GO) into concrete emerges as an innovative solution due to its remarkable physical and chemical properties. GO has been shown to enhance the mechanical properties of concrete, allowing target strength to be achieved with less cement. Therefore, this study aims to evaluate the influence of GO on the mechanical properties and workability of concrete. Four concrete mix designs were evaluated, consisting of a control group and three dosages (0.03%, 0.05%, and 0.08% GO relative to the cement weight). Tests were conducted for compressive strength, split tensile strength, and slump. Results indicate that the 0.08% dosage proved to be optimal, with a 22.71% increase in compressive strength and a 23.37% increase in split tensile strength at 28 days compared to the control mix. However, this dosage exhibited the lowest slump, measuring 139 mm. In conclusion, the incorporation of GO into concrete improves its strength, particularly at early stages, suggesting its potential for structures subjected to heavy loads from the outset.

  Acceso abierto

View more