Conference Agenda

This research was conducted in the city of Trujillo and aimed to evaluate the influence of incorporating CHO 80/60 NB steel fibers on the physical and mechanical properties of concrete with a compressive strength of 210 kg/cm², applied in lightweight slabs. The study was carried out using a quantitative approach and a quasi-experimental design, considering steel fiber dosages of 0.0%, 2.5%, 5.0%, and 7.5% relative to the volume of the mix.

For the evaluation of mechanical properties, compressive strength (36 specimens), flexural strength (36 beams), and indirect tensile strength (36 specimens) tests were performed according to ASTM standards at 7, 14, and 28 days. The results indicated that compressive strength decreased by 7.25% in the mix with 7.5% fibers compared to the concrete without fibers at 28 days. However, flexural strength and indirect tensile strength increased by 35.24% and 20.94%, respectively, for the same mix design, demonstrating a significant improvement in the material's flexural and tensile behavior.

Taken together, the results demonstrate that the incorporation of steel fibers significantly improves the mechanical performance of lightweight slabs, especially in terms of flexural and tensile strength, despite the observed reduction in the workability of the fresh concrete. These findings contribute to optimizing the design of concrete slabs for urban road infrastructure, promoting solutions aligned with Sustainable Development Goals SDG 9 (Industry, Innovation and Infrastructure) and SDG 11 (Sustainable Cities and Communities), through the efficient use of materials and the improvement of the slabs' structural performance.

The deterioration of Honduras’ road network and the large share of unpaved roads support the need for technically sound and environmentally beneficial maintenance alternatives; reports indicate that ~77% of the network is unpaved and ~2,000 km of asphalt pavement is deteriorated. This study proposes a hot-mix asphalt modified with recycled polyvinyl chloride (PVC) and evaluates its performance for heavy-traffic applications. The experimental program was based on the Marshall method (stability and flow), complemented with aggregate gradation, specific gravity measurements, and air-voids analysis. A total of eight 1200 g Marshall specimens were prepared with 5% asphalt binder: three control specimens (no PVC) and five PVC-modified specimens using 2%, 4%, 6%, 8%, and 10% PVC as aggregate. Results indicate that all PVC-modified specimens exceeded the minimum stability requirement for heavy traffic (≥8 kN), while the conventional mix exhibited higher stability overall. An optimum PVC content of 4.6% (at 5% binder) was computed, with corrected Marshall stabilities (PVC) ranging from 10.85 to 13.17 kN, compared with 15.52–18.36 kN for the control mix. Overall, the PVC-modified asphalt is a technically feasible alternative for heavy traffic, adding environmental value through plastic-waste reutilization.

This research article addresses the implementation of the 5S methodology in the warehouse area of a maintenance company in Guayaquil. This methodology, which combines quantitative and qualitative approaches, was applied comprehensively, incorporating the principles of classification, order, cleanliness, standardization, and discipline. To evaluate the initial and final state of the area, a checklist was compiled to measure progress toward the established objectives. The results obtained reflected a significant change in the final checklist, evidencing improvements especially in classification, order, and cleanliness. To maintain the final two Ss, tables were implemented and discussions were held with the staff. Additionally, operational indicators showed improvements in search time and correct returns. This article reviews various cases of application of the methodology in different industries and areas, gathering key information for its effective implementation in the warehouse area.

The study highlights the importance of various elements that affect the quality of technical documents. Within this contextual framework, it analyzes the influence of critical factors in the planning and execution of hospital infrastructure during the period in question. The Authority for Reconstruction with Changes prioritizes the detection and understanding of these factors as a means of ensuring excellence in technical documents, thereby contributing to the effectiveness and sustainability of hospital infrastructure during the period in question.

This article presents the design and evaluation of a prototype of packaging sheets made from coconut fiber, a biodegradable alternative to the massive use of plastics such as polyethylene (PE) and polypropylene (PP), which have a high environmental impact due to their low degradability. Coconut fiber stands out for its strength, durability, and rapid decomposition. This study compares its environmental impact, mechanical properties, and economic viability against conventional plastics. Regarding carbon footprint, coconut fiber generates between 0.5 and 1.0 kg of CO2, significantly less than PE (2.0- 3.0 kg) and PP (1.8- 2.8 kg). Their biodegradation occurs between 90 and 180 days, while plastics exceed 182,500 days. Although the tensile strength of coconut fiber shows a value of 2.1653 MPa, it is lower compared to 54.4765 MPa of PE and 6.5384 MPa of PP; it also presents good elasticity, high resistance to water, high water resistance, and high corrosion resistance (∼ 80 %) and low density (0.7- 0.8 g/cm³). Regarding cost, coconut fiber is a more environmentally friendly option, although it faces economic challenges depending on the market. The contribution of this research is to present a viable alternative to traditional packaging materials, offering adequate mechanical properties and resistance, as well as competitive costs, making it a suitable option for use. In summary, it is an ecologically favorable alternative, with the potential for large-scale replacement.

The study addresses the challenges in the production of coated tablets in an Ecuadorian pharmaceutical company, focusing on excess consumption of raw materials and defects in production. These issues affect efficiency and increase costs. The research uses the Six Sigma DMAIC methodology to optimize processes and reduce variability, thus improving quality and productivity. Quantitative and qualitative techniques, including brainstorming sessions and cause-and-effect diagrams, were implemented to identify the root causes of problems. The results show high efficiency in the correct cycles, but also reveal variability in production times between months. The measurement phase identified three critical points in the manufacturing process, and control charts were used to evaluate efficiency. Implementing continuous improvements and training staff are essential to maintaining quality and reducing cycle times. This analysis provides a solid basis for developing effective strategies and optimizing the manufacturing process in the pharmaceutical industry.