Programa de Pós-Graduação em Engenharia de Infraestrutura e Desenvolvimento Energético - PPGINDE/NDAE/Tucuruí
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Item Acesso aberto (Open Access) Argamassa autonivelante para contrapiso: efeito do tipo de cimento no comportamento físico-mecânico(Universidade Federal do Pará, 2020-04-24) ALVES, Brenda Maiara Oliveira; CORDEIRO, Luciana de Nazaré Pinheiro; http://lattes.cnpq.br/9126233381230999; https://orcid.org/0000-0001-7931-4042Self-leveling mortar (SLM) is inserted in the construction market as an innovative product due to its special properties when compared to conventional mortars due to the filling of empty spaces and self-compacting only under the effect of gravity, the ability to flow and level without the occurrence of segregation. The use of CP V – ARI cement is common for its production, since its high fineness favors the fluidity of the material and for providing fast hardening, fundamental characteristics that must be considered in self-leveling mortars (SLM’s). However, the rare availability of this type of cement becomes a limiting factor for its applicability in the region. Therefore, the objective of this research is to develop the study of SLM dosage for screed, adapting it to local materials that favor its design and evaluating its influence on rheological and mechanical characteristics. For the production of these mortars, we used the adaptation by Lopes et al. (2018) of Tutikian's methodology (2004) for self-compacting concrete (CAA), using fines in partial replacement of cement, adopting as controllable factors the type of cement (CP I, CP II-E, CP IV and CP V-ARI) and the type of mineral addition (silica fume and metakaolin). For the characterization of SLM in the fresh state, the mini slump, mini V-funnel, flow retention, mass density and incorporated air content, determination of exudation and healing time tests were performed. In the hardened state, the mechanical resistance to compression and traction in flexion and the retraction of these materials were verified, since it is one of the main pathologies of SLM. Analyzing the results obtained, it was observed that the surface area of the tested cements was the factor that most influenced the performance of the produced mortars, where cements with larger surface areas needed more additive to achieve fresh properties and had the highest rates of retraction. Mineral additions contributed to the cohesion of mortars and reduced shrinkage in mixtures with contents of up to 25% metakaolin and 15% silica fume.Item Acesso aberto (Open Access) Avaliação da influência de sistemas de proteção na permeabilidade de água em placas cimentícias com incorporação de perolas de poliestireno expandido(Universidade Federal do Pará, 2025-04-24) GOMES, Saulo de Almada; CORDEIRO, Luciana de Nazaré Pinheiro; http://lattes.cnpq.br/9126233381230999; https://orcid.org/0000-0001-7931-4042Water is one of the main elements responsible for the emergence and propagation of pathological events in coatings. Its permeated presence compromises the protective capacity, as well as directly influences durability, and can accelerate the deterioration of mortars, impairing their useful life. It is known that the use of surface protection instruments (painting system) and the use of waterproofing additives in the production of mortar coatings directly influence the protection against water permeability. Within this aspect, this study aimed to evaluate the degree of influence of protection systems for cement boards with the incorporation of Expanded Polystyrene (EPS). EPS was used in the cement board as a partial replacement for sand, in a volume of 20%. Two types of painting systems were evaluated, one for indoor environments and the other for outdoor environments, in addition to a type of waterproofing water-repellent additive, which was applied to the mortar mixture. This evaluation was carried out using two methods that analyze the permeability of mortar coatings: the Karsten tube test (pipe method) and the permeability test of ABNT NBR 15498/2021, which deals with the requirements for using cement boards. The mechanical properties of the mortars and boards were also characterized. The results of this work demonstrated that the protection systems evaluated caused different effects on the permeability of the boards. The waterproofing additive did not significantly influence the permeability of the panels, only the physical characteristics, with greater emphasis on the mass density and water absorption properties. The painting systems positively influenced the waterproofing capacity of the panels, with the external painting system being more efficient. Regarding the permeability assessment techniques, the Karsten tube showed great variability in the results, demonstrating that this technique is more sensitive to the conditioning variables. And, in the permeability test of NBR 15498, all panels passed the use requirement.Item Acesso aberto (Open Access) Avaliação do emprego de agregado miúdo reciclado na produção de peças pré-moldadas para pavimentação tipo “paver”(Universidade Federal do Pará, 2021-02-05) VIEIRA, Marília de Oliveira; SOUZA, Paulo Sérgio Lima; http://lattes.cnpq.br/4933212993218783Item Acesso aberto (Open Access) Captura de carbono em placas de concreto permeável(Universidade Federal do Pará, 2020-06-12) SANTOS, Caio José Bastos Marques; CORDEIRO, Luciana de Nazaré Pinheiro; http://lattes.cnpq.br/9126233381230999; https://orcid.org/0000-0001-7931-4042The production of cement has an impact on the environment from the release of co2 where carbon dioxide acts directly on the phenomenon of "greenhouse effect". Although cement production generates high rates of carbon dioxide, cement hydration products have the ability to reabsorb carbon dioxide from a physical-chemical phenomenon called carbonation. This research related this physical-chemical phenomenon to a material considered sustainable, such as permeable concrete. This type of concrete can be used on non-reinforced floors. The research focuses on analyzing the ability to capture co2in permeable concrete slabs. As for carbonation, mixtures produced with two granulometric bands of pebble and CP II F agglomerate with a/c ratios of 0.33 and 0.37 were analyzed in protected and unprotected environments, and in an accelerated environment in a co2 chamber. A chemical phenolphthalein indicator was used to assess the occurrence of carbonation in five ages of reading and image analysis software to study the carbonated surfaces. The material showed satisfactory results in terms of mechanical, water and carbonation depth parameters, having reabsorbed the atmosphere gas from the cement paste that surrounds the aggregate grains of the material's granular skeleton.Item Acesso aberto (Open Access) Estudo da colmatação em concretos permeáveis para tráfego leve e de pedestres(Universidade Federal do Pará, 2020-05-28) TEIXEIRA, Mísley da Cruz; CORDEIRO, Luciana de Nazaré Pinheiro; http://lattes.cnpq.br/9126233381230999; https://orcid.org/0000-0001-7931-4042Permeable concrete is a material mostly used as paving coating to reduce the effects of surface sealing. The material’s susceptibility to clogging is considered as a disadvantage, and it became an object of study in research about this material, as this one which evaluated the effect of clogging on permeable concretes used as pavement coating to light traffic. To this end, an experimental program was elaborated to characterize the material, designed with different percentages of fine aggregate, and to evaluate the evolution of clogging in permeable. The specimens were submitted to characterization and permeability tests after deposition cycles of different types of sediments (sand and clay) and cleaning by aspiration. The results of fresh material characterization corroborated the common assertion in the academic community that the insertion of fine aggregate in mix compositions increases the unit mass and the mechanical strengths and reduces the void percentage and the permeability of the concretes. The clogging tests proved that larger particle size sediments (sand) caused a loss of permeability due to sealing of the upper layer of the specimen, with loss ratios up to 21,13% at the end of the 20th sedimentation cycle, while the smaller particle size sediments (clay) induce to a deeper clogging, with a permeability reduction varying of 8,45% to 16,46%. The maintenance efficiency was proven by total recovery of clogging by sand, and a recovery percentage of 96,85% to clogging by clay. These results make it possible to declare that any particle size can clog the material, but also it is easy to recover its permeability by maintaining/cleaning of the pavement, which confirms that the pavement lifespan and raining capacity are directly associated to its periodic cleaning.Item Acesso aberto (Open Access) A influência dos agregados reciclados de resíduos da construção civil nas propriedades do concreto permeável: uma revisão sistemática(Universidade Federal do Pará, 2023-01-27) OLIVEIRA, Thainá Maria da Costa; CORDEIRO, Luciana de Nazaré Pinheiro; http://lattes.cnpq.br/9126233381230999; https://orcid.org/0000-0001-7931-4042Sustainable development in the civil construction sector has been increasingly promoting the advancement of research on sustainable technologies in order to mitigate the problems caused by this sector. In view of the above, a sustainable measure that aims to reduce the consumption of natural resources and the irregular disposal of waste is the practice of reuse and/or recycling of RCC, and as a solution to flood control, the use of permeable concrete (CPER) is proposed. Due to the lack of standardization and divergence of the procedures determined for the characterization of the CPER with recycled aggregate, it became necessary to analyze the scientific knowledge of this material and demonstrate the feasibility of using RCC in the production of the CPER. In view of the above, this research aims to contribute to the knowledge about the use of recycled aggregates in the production of pervious concrete, through the selection of articles in databases from the last 15 years, in order to evaluate the properties acquired by materials with different types, sizes and contents of recycled aggregates. The present research used the Systematic Literature Review (RSL) as methodology for conducting the study. The articles were collected from the four most prestigious scientific bases for publications on themes related to civil construction. To screen the articles and prepare the RSL, the StArt tool was used, and data extraction from the studies was defined in the research protocol prepared. The results showed that the subject gained more relevance in the year 2016, the Science Direct database presented the highest number of articles, 80% of the works used coarse aggregates in the production of CPER, the percentages of substitution most used among the researches were 100% and 50%. Structural and mixed concrete waste were the most used as recycled aggregates in the production of CPER. It was possible to note great dispersion between the data collected in the surveys and the component materials of the CPER. Moreover, it was found that all types of aggregates met the strength and porosity values determined by the ACI and the permeability met both standards, except for the glass waste. Thus, the application of recycled aggregate in the production of CPER was evaluated as an adequate solution to the problems of irregular waste disposal and shortage of natural aggregates.Item Acesso aberto (Open Access) Modelagem da capacidade de infiltração de diferentes cenários de pavimentos permeáveis na bacia do Una - Belém-PA(Universidade Federal do Pará, 2023-04-06) PALHETA, João Victor Batista; CORDEIRO, Luciana de Nazaré Pinheiro; http://lattes.cnpq.br/9126233381230999; https://orcid.org/0000-0001-7931-4042Permeable concrete is an important alternative for sustainable construction, being used to preserve water quality and restore soil infiltration properties. To analyze this behavior, a study was conducted to analyze the infiltration capacity of different permeable sidewalk scenarios in the Três de Maio sub-basin located in Belém do Pará using SWMM software. To this end, characteristics were stipulated such as the effect of sidewalk thickness on infiltration rate, base thickness on infiltration rate, the effect of permeable sidewalk area on infiltration rate, and water catchment potential in the proposed scenarios. The scenarios were divided into nine drainage system arrangements, distributed into three thicknesses for the base course (100 mm, 200 mm and 300 mm) and 3 three for the permeable concrete sidewalk reservoir (300 mm, 400 mm and 500 mm). With the insertion of permeable sidewalk it was noticed that all the modeled scenarios obtained significant benefits, however, the application of permeable concrete thickness variation did not obtain significant influence on the infiltration rate keeping its results constant. The use of permeable sidewalk has a great potential for water catchment in all scenarios, showing promise to be applied in areas with a low degree of permeability, especially in the sub-basins that make up the Una basin in Belém do Pará, which suffer from flooding and inundation due to urban sealing and the outdated drainage network.Item Acesso aberto (Open Access) Placas cimentícias produzidas com a incorporação de pérolas de poliestireno expandido (EPS)(Universidade Federal do Pará, 2020-09-01) SILVA, Max Weverton Moreira da; CORDEIRO, Luciana de Nazaré Pinheiro; http://lattes.cnpq.br/9126233381230999; https://orcid.org/0000-0001-7931-4042The Internal and External Vertical Painel Systems are the parts of the residential building that limit it vertically and delimit its environments, such as facades and walls or internal partitions. The use of seals with lower density than masonry provides a reduction in the mass of this subsystem, reducing the demand for aggregates and binders, in addition to reducing the load on the structure, which allows for optimization of its design. The objective of this work is to verify the viability of the production of cementitious slabs with the incorporation of expanded polystyrene (EPS) beads for application in internal vertical sealing elements. For this, mortars with a 1: 3 line (cement: sand) were produced, with levels of incorporation of expanded polystyrene of 0%, 10%, 20% and 30% in relation to the total volume of materials. Mortars were characterized in the fresh state, through the determination of mass density and consistency index, and in the hardened state, for knowledge of the density properties in the hardened state, resistance to compression and traction, and modulus of elasticity. After knowing the characteristics of the mortars, cementitious slabs were produced, reproducing the same trace in the specimens. The plates were tested for bulk density, water absorption, water permeability and flexural strength. The results of this work demonstrated that the cementitious slabs with the incorporation of up to 20% of EPS present technical characteristics for application in internal vertical sealing systems.Item Desconhecido Reação álcali-agregado: potencial reativo dos agregados miúdos provindos das jazidas dos municípios de Ferreira Gomes, Macapá e Porto Grande no estado do Amapá(Universidade Federal do Pará, 2024-02-29) FIGUEIREDO, Rodrigo Francklin Lopes; SOUZA, Paulo Sérgio Lima; http://lattes.cnpq.br/4933212993218783The concrete is one of the most employed materials in engineering, its performance and durability can be altered by various deterioration processes, making it essential that materials used in its composition be analyzed and suitable for each type of construction. Among these processes, there is the alkali-aggregate reaction (AAR), which is defined as a chemical process that occurs between the alkaline components of cement and certain types of reactive aggregates, which can result in the emergence of expansive products that cause structural damage to concrete (Neville, 1997). The objective of this work is to analyze the reactive potential of fine aggregates, specifically the alkali-reactive potential of 8 sand samples from the main deposits in the municipalities of Ferreira Gomes, Macapá, and Porto Grande in the state of Amapá (AP). The motivation for this research arose due to the lack of data regarding the reactivity of fine aggregates in the state and as a preventive measure against the occurrence of alkali-silica reaction (ASR). For this evaluation, the first test used was the accelerated mortar bar method following NBR 15577 - 4 (ABNT, 2018). In addition to this, the chemical method following NBR 9774 (ABNT, 2008) was employed as an auxiliary, as well as scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS) attached, in order to observe the microstructure of the bars, verify the presence or absence of products that evidence the occurrence of AAR, and through semi-quantitative elemental chemical analysis, identify the substances present in the bars. The results indicated in the accelerated method that the collected samples do not have deleterious potential, as the bars did not reach 0.19% expansion; the highest percentage of expansion was 0.12% in the Translima Deposit (J7), this innocuous behavior was confirmed with the use of the chemical method. Regarding the use of SEM, the formation of the gel related to ASR was not observed. Finally, the mapping of reactive aggregates was carried out, and it was found that the aggregates are innocuous and can be used satisfactorily regarding ASR.Item Desconhecido Resíduos de gesso na construção civil: uma análise bibliométrica na base de dados eletrônica Web of Science(Universidade Federal do Pará, 2021-11-05) FREITAS, Pablo Virgolino; ISHIHARA, Júnior Hiroyuki; http://lattes.cnpq.br/3498874642887006; https://orcid.org/0000-0002-0081-7913The construction sector stands out for the exploitation of natural resources and for the production of residues that, in the vast majority, are improperly discarded in nature, generating serious negative consequences for the environment. Aiming to minimize the harm caused by the poor disposal of Construction and Demolition Waste - CDW, as well as to develop alternative ways to replace natural raw material by recycled waste, many studies have been carried out. Among the materials that have high recycling potential is gypsum, whose residues are already being used as a binder, additives in Portland cement, soil correction, among other forms of recycling. Therefore, this study aims to analyze Brazilian and international scientific publications dealing with the reuse of plaster in civil construction, performing a bibliometric mapping in the Web of Science electronic database. The mapping was carried out through exploratory research related to the reuse of gypsum waste in several scientific articles. Words and expressions that had the highest frequency of occurrence in published articles were collected. The search in the database resulted in 89 articles, of which 42 contained information on the recycling of gypsum waste in civil construction. The selected articles belong to authors from 19 countries, the most representative being Brazil, with 13 articles. Through the VOSviewer software, network maps were elaborated, through which it is demonstrated how authors and scientific institutions relate in relation to the recycling of plaster waste. The results of the articles studied here compose a portfolio through which effective methods of reusing this waste can be verified, thus facilitating the search by third parties for this type of information. What can help in the formulation of public mechanisms that help to improve solid waste management in Brazil, because, through the social network Instagram, this information will be made available in order to reach an audience that goes beyond academic borders.