http://repositorio.ufc.br/handle/riufc/23150 Sun, 16 Aug 2026 07:25:01 GMT 2026-08-16T07:25:01Z http://repositorio.ufc.br/handle/riufc/87111 Título: Caracterização do módulo de elasticidade de concretos por meio de diferentes métodos e condições de carregamento Autor(es): Holanda, Ana Dulce de Castro Abstract: The modulus of elasticity of concrete is a property that plays a fundamental role in the structural behavior of buildings. It is essential for understanding how concrete reacts under different loads and efforts, being especially important in large-scale works, such as bridges and dams, which will be exposed to extreme loads and adverse environmental conditions. In this context, the evaluation of the mechanical properties of concrete is crucial to judge the performance and durability of buildings. Standardized methods, such as the application of ultrasonic waves, estimation for design purposes based on mechanical resistance, or even the traditional static modulus of elasticity test, provide estimates that present divergences. The following work aims to analyze the variations in the modulus of elasticity obtained through different experimental techniques, in addition to identifying the damage to the material associated with the loading conditions and the discrepancy of these techniques in comparison to the model proposed by NBR 6118 (ABNT, 2023). For this, non-destructive tests were carried out (impact resonance and dynamic modulus through ultrasonic pulse speed) interspersed with static tests (at amplitudes of 30%, 20% and 10% of the concrete's ultimate strength - fc) and quasi-static tests (generating the viscoelastic property known as complex modulus) by varying the loading frequency. The results demonstrated that there was a reduction in the absolute value of the complex module |E*|, on average 2.4% ± 2.9% in UTM-25 and 2.3% ± 1.3% in UTM-30, between frequency of 25 Hz and 0.03 Hz, suggesting that concrete becomes less rigid as the loading frequency decreases. There was no significant difference between the measurements of the two Universal Test Machine (UTM) servo-hydraulic presses. For the loading amplitude, there was a reduction of 4.0% ± 1.0% in the resonant modulus of elasticity and in the dynamic modulus of elasticity, after the static modulus of elasticity test with 30% of fc, indicating the influence of loading in the value of the modulus of elasticity and possible damage to the material after applying the load. As for modulus prediction, through the proposal of NBR 6118 (ABNT, 2023) the calculated value, Eci=29.50 GPa, surpassed all measurements obtained with the tested methods. For the dynamic module, the adoption of the Poisson ratio suggested in NBR 6118 (ABNT, 2023), ν = 0.2, resulted in values 25% higher than the measurements of P-waves associated with S-waves. Tipo: TCC Sun, 01 Jan 2023 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/87111 2023-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/87110 Título: Análise da produtividade na construção de um edifício vertical em Fortaleza, sob influência da modularização das instalações prediais Autor(es): Galeno, Arthur Carneiro Abstract: The civil engineering is a knowledge area that is so much more than construction some buildings. The function of the engineer currently is more associated to planning, control, resource management and, mainly, study of indicators. The building construction industry, like any other, need to be controled and that is why this job market manipulates some data that helps to understand the production operation in construction site. However, those informations are not enough if there is no studies that synthesize all of them and results in a performance measurement, after all, the competitiveness of the current job market requires builders make your projets come true thinking in the better way to agregate quality, cost, security and productivity. Despite take smaller steps than the others industries, the building construction is innovating in some process around the world, thinking in improve the productivity in the constructions and catch performances better and better. On this way, the industrialization of this sector is already a reality, including the brazilian territory, and it is about that and its impacts that this Project is going to treat about it, more especifically in a modularization system of building installations. In this case, the assessment will be also quantitative, through the comparative method of Global Productivity Index (GPI), thus filling a gap in the literature. Tipo: TCC Sun, 01 Jan 2023 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/87110 2023-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/87060 Título: Uso do BIM aplicado ao comparativo de custos entre materiais em instalações prediais de água quente Autor(es): Carvalho, Ana Beatriz Lopes de Abstract: The use of BIM (Building Information Modeling) in Brazil has gained increasing relevance in recent years. The country has been adopting and encouraging the use of this methodology in the civil construction, architecture, engineering and infrastructure sectors. In 2018, the Brazilian government implemented Decree No. 9,377, which establishes guidelines for the adoption of BIM in engineering works and services carried out by federal public administration bodies and entities. In this context, the application of this technology in the area of installations represents a gain in productivity and quality in the projects developed, in addition to allowing a detailed and efficient analysis of the materials used. One of the deficiencies that the adoption of this methodology aims to mitigate and which was examined in this research is the inaccuracy in estimating costs and materials. To address this issue, a cost comparison was carried out between two materials commonly used in hot water installations, CPVC (Chlorinated Polyvinyl Chloride) and PPR (Random Copolymer Polypropylene), using the Autodesk Revit software and the UnMEP Aqua plugin, this tool used to assist in the preparation of hydraulic installation projects. Therefore, the objective of this research was to carry out the design and modeling of the hot water installations project for a six-story residential building using BIM technology, in addition to establishing a cost assessment between the mentioned materials. In view of the above, a higher cost of CPVC was observed compared to PPR in the analyzed project. Furthermore, it was found that the use of the plugin resulted in greater precision in the quantitative survey when compared to manual information extraction. Finally, factors that impact the choice of water heating system were examined, as well as viable solutions were identified to optimize the thermal efficiency of the installations. Tipo: TCC Sun, 01 Jan 2023 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/87060 2023-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/86537 Título: Análise do comportamento térmico de pavimentos de concreto poroso antes e após colmatação Autor(es): Lima, Karina de Abstract: The accelerated and unplanned growth of cities has led to the sealing of soils and, consequently, aggravated problems such as the Urban Heat Island effect (UHI). In this context, porous concrete paving represents a sustainable alternative, as it controls rainwater runoff and has a high albedo, a property that quantifies the amount of light reflected by the surface. Clogging is a phenomenon that involves the obstruction of the pores of the porous concrete, which occurs due to the entry of sediments and leads to the loss of the useful path of the porous concrete flooring. Therefore, this study aims to analyze the effects of clogging on porous concrete pavements, focusing on thermal behavior, thermal conductivity and evaporative process. Initially, the influence of air temperature and relative humidity on the surface temperatures of porous concrete pavements in the clean state was analysed, in which a significant sensitivity to environmental conditions was observed, highlighting the importance of these factors. Comparing clean and clogged sidewalks, it was found that while clean sidewalks had slightly higher surface temperatures during sun exposure, clogged sidewalks cooled faster. Thermal conductivity analysis highlighted a discrepancy between floors in a clean and clogged state, highlighting the influence of clogging on the heat capacity of the material. The presence of sand as a sealing material reduced the void content, increasing thermal conductivity, which is directly related to heating and heat dissipation. In the evaporation test, the clogged plates showed a slightly higher evaporated mass than the clean plates, this increase in evaporated mass was attributed to the clogged sand's ability to retain water between its voids. Therefore, the results suggest that clogging brought better results than pavement in the clean state in terms of thermal and evaporative performance. Tipo: TCC Sun, 01 Jan 2023 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/86537 2023-01-01T00:00:00Z