Conference Agenda

In the construction industry, multifamily housing projects present constant challenges related to managing changes in specialty structures, due to various reasons such as inefficient communication among stakeholders, limited resources and traditional processes. These changes, although necessary, have a significant impact on project costs and schedule. Effective and timely communication of such changes is essential to ensure good coordination among stakeholders. Communication of these changes is often slow and inefficient due to traditional methods or lack of standardization, such as paper documentation, emails, and constant monitoring, which delays decision-making and impacts project performance..

For this reason, this research focuses on developing and evaluating a procedure that integrates the use of BIM methodology, Revit and Trimble Connect to reduce the time required in the effective communication of a structural change in multifamily building projects in the city of Lima. The study focuses on: (A) registration and analysis of the information through expert judgment, (B) determination of the traditional mapping in change management in the evaluated projects, (C) development of the new mapping in change management and (D) implementation of the new mapping in change management in the evaluated project through BIM. Finally, the result is a significant reduction in the time spent in change communication, and also improves the coordination between those involved and the traceability of the shared information when implementing Revit and Trimble Connect in a BIM environment. In conclusion, the technology used allows a better change management, thus reducing the effective communication time in the evaluated mapping.

The objective of this research was to determine the variation in the compressive strength of concrete with f'c = 210 kg/cm² when adding aloe vera gel in proportions of 10% and 15% with respect to the mixing water. An experimental design was used with 45 test tubes distributed in three groups, the first group corresponds to the standard sample, the second group to the samples with the addition of 10% and the third group to the samples with the addition of 15%, evaluated after 7 , 14 and 28 days of curing. The aggregates used were obtained from the Bazán quarry, which complied with current technical regulations. The design of the mixtures was carried out using the ACI 211 method. Our study has a quantitative approach and is experimental, the results obtained were a compressive strength of concrete without addition of 241.41 kg/cm² at 28 days, while with 10% aloe vera gel increased to 296.61 kg/cm² (22.89% more) and with 15% it reached 268.88 kg/cm² (11.38% more). According to the results, the hypothesis proposed for the 10% addition is partially approved, since the expected 20% increase was exceeded, while for the 15% this value was not reached. It was concluded that 10% addition is the optimal percentage to maximize compressive strength, combining effectiveness and economic viability, thus supporting the use of aloe vera as a promising natural additive to improve concrete properties in a sustainable manner.

The objective of this research is to determine if the lime blocks with coconut fiber have adequate mechanical properties for their non-structural use, according to the E.070 standard, that is, to know if non-bearing walls can be executed using a fiber masonry unit. coconut with added lime; using organic coconut waste from the town of Aucayacu – Leoncio Prado – Huánuco; Likewise, due to the problem of population growth, it implies the need to construct homes that have non-structural elements, such as perimeter fences, leading to an increase in the acquisition of concrete blocks or clay bricks in said civil works. For this reason, the use of natural fibers of plant origin is used to produce masonry units to supply the demand. Then the optimal proportions to produce lime blocks plus the addition of coconut fiber are presented, prioritizing mainly the reuse of organic coconut waste. Finally, the classification of masonry units is defined according to regulation E.070, complying with the physical and mechanical characteristics as a block for non-structural purposes.

The main objective of this research is to improve the geotechnical behavior of soils through the use of natural ichu fibers (Stipa ichu). It is hypothesized that the addition of ichu fibers will increase the bearing capacity of the soil, improving its compressive and shear strength, which will reduce differential settlements and, consequently, structural failures in buildings located in areas with problematic soils. The research methodology includes laboratory tests, such as the standard Proctor test, compressive and shear strength tests, in order to evaluate the influence of ichu fibers on the mechanical properties of the soil. Likewise, the optimum dosage of fibers will be determined to maximize soil stability and minimize environmental impact in the region. This study is justified not only by the increasing urban expansion into areas with unstable soils, but also by the need to develop sustainable and accessible stabilization methods. The use of natural ichu fibers represents an innovative and environmentally friendly solution that could replace the use of more costly and environmentally damaging conventional stabilizers.

The objective of this research is to determine the influence of the incorporation of marmolina waste on the compressive strength of structural concrete. The research is applied, with descriptive level and experimental design. The pertinent tests were carried out in the concrete laboratory, determining that the aggregates used comply with the established standards. Subsequently, the mix design was made for a concrete f'c=210 kg/cm2 using the ACI method, adding 5%, 10% and 15% marmolina residues to the mix according to the weight of cement. At 7 days, the average strength of the standard concrete was 165.13 kg/cm², while for the samples with marmolina it was lower, with an average of 158.89 kg/cm² for 5%, 157.95 kg/cm² for 10%, and 154.89 kg/cm² for 15%. Over time, the strengths increased, but still remained below the target. In conclusion, the study reveals that its use may result in a short-term strength reduction. It is suggested that this type of concrete could be considered as a retarding material, which would reach the desired strength after a longer curing period.

This research addresses the problem of delays in the delivery of public building projects, identifying the inadequate selection of contractors as one of its main causes. In this sense, the implementation of the Choosing By Advantages (CBA) tool is carried out to optimize the selection of contractors in public building projects. In this way, compliance with project deadlines can be guaranteed. Through a case study, the evaluation of various companies was carried out using the CBA tool. This allowed an objective and comprehensive evaluation to be carried out, since factors such as financial capacity, previous experience in similar projects, experience of technical personnel, engineering capacity and incident record were considered. These factors are the product of the literature review. The results show that company C obtained a score of 230 points in the cost vs benefit analysis; Therefore, it is the best option to guarantee compliance with the deadlines of the project taken as a case study. Validation using the Expert Judgment tool revealed high satisfaction and importance for the application of CBA in public buildings. Likewise, the results of the CBA method were validated with the Paramount Decisions tool, where the hierarchical order obtained using the CBA tool is verified. That is, company C is the winner. In conclusion, the effectiveness and viability of the Choosing By Advantages (CBA) tool for the selection of contractors in future projects in the public sector was demonstrated