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Academic literature on the topic 'Asfaltos polímero'
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Journal articles on the topic "Asfaltos polímero"
Münkel Jiménez, Michelle, José Pablo Aguiar Moya, Alejandra Baldi, Natalia Hernández Montero, and Rafael Ernesto Villegas Villegas. "Efecto de polímeros y aceite de cocina en el rango de desempeño del asfalto." Infraestructura Vial 23, no. 42 (July 30, 2021): 71–81. http://dx.doi.org/10.15517/iv.v23i42.47587.
Full textBustos Castañeda, Henry Yecid, Pedro Alexander Sosa Martínez, Nelson Rodríguez Ramírez, and Jeimy Natalia Calderón Bustos. "Fundamentos micro y macroscópicos de la modificación del asfalto convencional con polímeros: una revisión." INVENTUM 13, no. 24 (August 30, 2018): 58. http://dx.doi.org/10.26620/uniminuto.inventum.13.24.2018.58-77.
Full textVila Romaní, Rolando, and José Gabriel Jaramillo Briceño. "Incidencia del empleo de polímeros como modificadores del asfalto." Revista Lasallista de Investigación 15, no. 2 (December 2018): 315–26. http://dx.doi.org/10.22507/rli.v15n2a24.
Full textRodríguez U, Daniella, Cristian Rodríguez, Sindy Ramírez, and Cristhian Flórez. "Evaluación del efecto del envejecimiento del cemento asfáltico 80-100 modificado con lignina Daniella Rodríguez U, Cristian Rodríguez, Sindy R." INGENIARE, no. 20 (December 1, 2016): 47. http://dx.doi.org/10.18041/1909-2458/ingeniare.20.408.
Full textGodoi, Luiza Carbunck, Lélio Antônio Teixeira Brito, Natália Guterres Mensch, and Jorge Augusto Pereira Ceratti. "Utilização do ensaio de flexão sobre amostra semicircular para avaliação da propagação do trincamento em misturas com diferentes ligantes." TRANSPORTES 27, no. 4 (December 28, 2019): 159–71. http://dx.doi.org/10.14295/transportes.v27i4.1832.
Full textD'Antona, Daniela M. G., and Consuelo A. Da Frota. "Estudo de misturas asfálticas com ligante modificado pelo polímero EVA para pavimentos urbanos de Manaus - AM." Polímeros 21, no. 1 (February 11, 2011): 13–18. http://dx.doi.org/10.1590/s0104-14282011005000007.
Full textVasconcelos, Kamilla L., Liedi Legi Bariani Bernucci, Marcia Midori Takahashi, and Verônica T. F. Castelo-Branco. "Rheological characterization of asphalt binders used in strain relief asphalt mixtures (SRAM)1." DYNA 84, no. 200 (January 1, 2017): 90–96. http://dx.doi.org/10.15446/dyna.v84n200.56966.
Full textBotaro, Vagner Roberto, Samuel Rodrigues Castro, Fausto Rodrigues Junior, and Andrea E. Cerantola. "Obtenção e caracterização de blendas de asfalto CAP 20, modificado com poliestireno reciclado, resíduos de pneu e lignina organossolve." Rem: Revista Escola de Minas 59, no. 1 (March 2006): 117–22. http://dx.doi.org/10.1590/s0370-44672006000100015.
Full textCajina Cruz, Nicole Alexandra, Alejandra Baldi, Edgar Camacho Garita, and José Pablo Aguiar Moya. "Evaluación de desempeño de la mezcla asfáltica modificada con residuos de PVC tipo blíster." Infraestructura Vial 23, no. 42 (July 30, 2021): 13–22. http://dx.doi.org/10.15517/iv.v23i42.44688.
Full textHiguera Sandoval, Carlos Hernando, Anyi Milena Patarroyo Fonseca, and Yeison Fabián Vargas León. "Factibilidad de mezclas asfálticas de alto módulo con agregados del área de influencia de Tunja." REVISTA FACULTAD DE INGENIERÍA 22, no. 34 (January 15, 2013): 9. http://dx.doi.org/10.19053/01211129.2214.
Full textDissertations / Theses on the topic "Asfaltos polímero"
Negrão, Douglas Polcaro. "Estudo de asfaltos modificados por polímeros do tipo RET para aplicações em pavimentos." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3138/tde-09032007-170249/.
Full textThe present document presents the alterations of the properties of the polymer modified asphalts using the polymer RET (Reactive Elastomeric Terpolymer) and the behavior of dense asphaltic mixtures using these modified asphalts. To reach this objective, the monitoring results accomplished in the experimental tram executed in SP-330, Rodovia Anhanguera, that used this type of modified asphalt are presented. The study comprehends the modification of the CAP20 and CAP40 asphalts with 1,0%, 1,5% and 2,0% of RET polymer, with subsequent dosage of a mixture in the Grade III of DERSA applying the RET polymeric proportion considered more appropriate. For the verification of the mechanical properties of this mixtures, Resilience Module, Traction Resistance for Diametrical Compression and Permanent Deformation Resistance in a LPC type simulator were accomplished.
Guimarães, José Marcos Faccin. "Concreto asfáltico drenante em asfaltos modificados por polímero SBS e borracha moída de pneus." reponame:Repositório Institucional da UFSC, 2013. http://repositorio.ufsc.br/xmlui/handle/123456789/100844.
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A pesquisa estuda as propriedades mecânicas quanto a desagregação, permeabilidade e deformação permanente dos concretos asfálticos drenantes modificados por polímero SBS e borracha moída de pneus na condição com e sem ciclagem de água. Os granulares utilizados foram de origem granítica oriundos da Empresa Vogelsanger em Palhoça # SC e os ligantes de elevada consistência (CAP 30/45) fornecidos pela Refinaria Duque de Caxias (REDUC) e modificados a fim de atender o objetivo da pesquisa pela Empresa CBB Asfaltos em Curitiba # PR. Utilizou-se o CAP 30/45 com a intenção de obter misturas mais resistentes ao elevado tráfego que provoca o aumento da deterioração das rodovias e modificados para aumentar ainda mais essa resistência. A modificação caracterizou-se pela adição de 4% de polímero SBS por já ter sido tema de outras pesquisas e 20% de borracha moída de pneus pelo apelo ambiental, sendo que tal percentagem foi utilizada pois é a adotada pelas curvas granulométricas descontínuas que caracterizam as misturas drenantes. Para a realização de ambas as misturas, para que sejam comprovadamente drenantes, devem ter volume de vazios acima de 20% e permeabilidade com velocidade de escoamento acima de 0,6 cm/s e além disso, possuírem desagregação inferior a 25% e deformação permanente inferior a 10% para que não haja afundamentos nas trilhas de roda. A razão de estudar as condições das misturas com e sem ciclagem, é verificar o comportamento dessas misturas tanto em pista seca quanto com pista úmida ou molhada. Mas acima de tudo, o estudo busca desenvolver um bom pavimento que proporciona conforto, economia e segurança o que o pavimento drenante oferece por não haver a formação da hidroplanagem, viscoplanagem, reflexão luminosa, névoa d#água, irregularidades, graças à eliminação da lâmina d#água
The research studies the mechanical properties as to disintegration, permeability and permanent deformation of drainage asphalt concretes modifieds for polymer SBS and ground rubber tires in the condition with and without water cycling. The granulars used are of granitic origin from the Vogelsanger Firm in Palhoça - SC and the binders of high consistency (CAP 30/45) were provided by Duque de Caxias Refinery (REDUC) and modifieds for the purpose accord the objective of the research by CBB Asphalt Firm in Curitiba - PR. Was used himself the CAP 30/45 with the intention of obtaining mixtures more resistant to high traffic which causes the increase of the deterioration of the highways and modifieds to further increase this resistence. The modification was characterized himself by the addition of 4% of polymer SBS for already have been theme of other researchs and 20% of ground rubber tires by environmental appeal, being that such percentage was used because is adopted by the discontinuous granulometric curves that characterize the draining mixtures. For the realization of both mixtures, so that are provenly draining, must have void volume above than 20% and permeability with flow velocity above than 0,6 cm/s and furthermore, will possess disintegration less than 25% and permanent deformation less then 10% so that no there sags in the wheel tracks. The reason for study the conditions of mixtures with and without water cycling, is check the behavior of these mixtures both in dry runway as with moist or wet runway. But above all, the study search to develop a good paviment that provides comfort, economy and safety which the drainage paviment provides for have not the formation of hydroplaning, viscoplanagem, light reflection, water mist, irregularities, due to elimination of water depth
Zegarra, Jorge Rodolfo Escalante. "Avaliação de misturas produzidas com ligantes asfálticos peruanos convencional PEN 60/70 e modificados por polímero SBS tipo I 60/60 e PG 76-22." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18143/tde-26042007-173415/.
Full textThe main goal of this work is the evaluation of the behavior of conventional peruvian asphalt binder AC PEN 60/70 and SBS polymer-modified asphalts I 60/60 and PG 76-22, when used in hot-mix asphalt (HMA), under both conditions with and without short-term aging. It aims also to establish the asphalt binder performance grade (PG), which is based on the weather conditions, for different peruvian regions. The peruvian asphalt binders were submitted to conventional and Superpave laboratory tests: penetration, softening point, Brookfield viscosity, flash point, elastic recovery, storage stability, rolling thin film oven test (RTFOT), pressure aging vessel (PAV), dynamic shear rheometer (DSR) and bending beam rheometer (BBR). For the evaluation of mechanical properties 196 specimen were sumitted to Marshall, indirect tensile strength under static loading, indirect tensile strength under static loading after induced moisture, resilient modulus under dynamic diametric compression, static and dynamic creep and fatigue tests. The result show that polymer-modified asphalt binder improve rheological characteristic, in terms of thermal susceptibility and resistance to aging, and also improve the asphalt mixtures behavior, which was verified in all of the mechanical tests and after the structural analysis performed with the Elsym5 program, for all of the short-term aging conditions studied in this work.
Taira, Claudio. "Avaliação do desempenho em laboratório de misturas asfálticas densas utilizando asfalto convencional (CAP-20) e asfalto modificado com polímero SBS (BETUFLEX B 65/60)." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/18/18137/tde-09052016-111805/.
Full textThe purpose of this study is to evaluate the performance of asphalt mixes using conventional binder and the same binder modified with SBS polymer (Betuflex B 65/60) based on Marshall test, static and dynamic creep tests, indirect tensile strength test and resilient modulus by indirect tensile test, with the same granulometric composition and different binders contents. In Marshall test, polymer modified asphalt mixes presented better stability performance than conventional asphalt mixes in most of binders contents, despite of the higher flow values obtained for all binders contents. The static creep test results indicated that this test does not clearly distinguish the effect of polymer in asphalt mixes while the results of dynamic creep test indicated the opposite, i. e., polymer modified asphalt mixes deformations are smaller for most of the asphalt binders contents studied. The indirect tensile strength test results showed a better performance of modified asphalt. The results of resilient modulus by indirect tensile test at 25°C showed smaller values for modified asphalt, while the results at 5ºC and 40ºC did not show differences between the asphalt mixes. The mathematics modelling of the creep and recovering curves according to constitutive equations of some basic visco- elastic models showed a difference between the values of some constitutive elements in both cases, dynamic and static tests.
Amaral, Simonne da Costa. "Estudos de misturas asfálticas densas com agregados do estado do Pará, utilizando asfalto convencional (CAP-40) e asfalto modificado com polímero SBS (BETUFLEX B 65/60)." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/18/18137/tde-07012003-194218/.
Full textThis research intends to analyze the advantages of hot-mix asphalt mixtures composed by polymer modified binder and gravel in relation to those made with conventional binder. To achieve the objective, there were compacted seventy five specimens with conventional binder and seventy five specimens with SBS polymer modified binder (BETUFLEX B 65/60) and were performed Marshall tests, static creep (40oC) tests, indirect tensile strength tests and resilient modulus by indirect tensile (25oC) tests. The results of Marshall and tensile strength tests showed a better performance of the polymer modified asphalt mixes than that presented by the conventional asphalt ones. The results from the relation of resilient modulus by indirect tensile and indirect tensile strength tests probably showed that the modified asphalt mixes have the best performance. The elastic strains from static creep tests also showed a better performance of the polymer modified mixes in three of the five binder contents, however, the others properties from static creep tests like as total strain, viscoplastic strain and creep modulus showed that the conventional asphalt mixes have the best performance.
Bruxel, Daiana Frank. "ESTUDO DO COMPORTAMENTO VISCOELÁSTICO DE CONCRETOS ASFÁLTICOS CONVENCIONAIS E MODIFICADOS ATRAVÉS DE ENSAIOS DE LABORATÓRIO E DE ANÁLISE DE DESEMPENHO." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/7901.
Full textRoad transport is of great importance for many countries, in Brazil it can be even more extreme, by excessive movement of cargo through this modal. We know that the maintenance costs of roads are high, forcing researchers to find always new alternatives to improve the use of materials, reduce energy consumption, speed up restoration interventions, among others. The goal of this study is to evaluate the behavior of conventional asphalt mixtures of polymers and modified for resistance and deformability. For this study, we used a crushed mineral aggregate skeleton of volcanic origin with framed particle size in the range of C DNIT, coming from the quarry of Santo Antonio da Patrulha RS. 4 types of asphalt binders were used, the CAP 50/70, the TLA CAP, the CAP 60/85 and the TLA FLEX, and the latter two are modified polymers. Compression was done according to Superpave methodology. Tests were carried out to check the mechanical behavior (test Tensile Strength for Diametral Compression (RT) assay Resilience Module (MR) and Dynamic Module test Uniaxial) and later held one performance analysis of mixtures studied by AASHTOWare software. From these investigations it was possible to verify the behavior of the mixtures studied for their resistance, deformability and especially as its durability. It can be said that the choice of the mixture to be used will depend on its applicability. The tests showed that mixtures with TLA Flex achieved the best results, a fact that was confirmed by performance analysis that demonstrated the mixture of TLA Flex with a thickness of 18 cm coating meets all requirements evaluated.
O transporte rodoviário é de grande importância para muitos países, no Brasil isso pode ser ainda mais extremo, pelo excesso de movimentação das cargas através deste modal. Sabe-se que os custos de manutenção das rodovias são elevados, forçando os pesquisadores a encontrar sempre novas alternativas para melhorar o aproveitamento dos materiais, diminuir o consumo de energia, agilizar as intervenções de restauração, entre outros. O objetivo do presente trabalho é avaliar o comportamento de misturas asfálticas convencionais e modificadas por polímeros quanto à resistência e deformabilidade. Para este estudo foi utilizado um esqueleto mineral agregado britado de origem vulcânica com granulometria enquadrada na Faixa C do DNIT, advindos da pedreira de Santo Antônio da Patrulha, RS. Foram utilizados 4 tipos de ligantes asfálticos, o CAP 50/70, o CAP TLA, o CAP 60/85 e o TLA FLEX. A dosagem e compactação foram feitas segundo a metodologia SUPERPAVE. Foram realizados ensaios para verificação do comportamento mecânico (ensaio de Resistência à Tração por Compressão Diametral (RT), ensaio de Módulo de Resiliência (MR) e ensaio de Módulo Dinâmico Uniaxial) e posteriormente realizada uma análise desempenho das misturas estudadas através do software AASHTOWare. A partir destas investigações foi possível verificar o comportamento das misturas estudadas quanto a sua resistência, deformabilidade e principalmente quanto ao seu desempenho. Pode-se afirmar que a escolha da mistura a ser utilizada dependerá do cumprimento de uma série de quesitos de projeto. Os ensaios evidenciaram que as misturas com TLA Flex obtiveram os melhores resultados, fato este que foi confirmado através da análise de desempenho que comprovou que esta mistura, com espessura de 18 cm de revestimento cumpre com todos os requisitos de projeto.
Anitelli, Andre. "Estudo do dano por umidade de misturas densas com ligantes asfálticos convencional e modificado com polímero SBS." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18143/tde-17102013-100748/.
Full textThis research presents a contribution to understanding hot mix asphalt (HMA) moisture damage susceptibility according to ASTM D 4867 and AASHTO T 283 tests. A full factorial experiment design was carried out considering the factor variations, on two levels: asphalt type (CAP 50/70 and CAP 50/70+SBS), additive presence (with or without hydrated lime) and mixture procedure (short and long term aging). The experimental program resulted in 8 types of asphalt mixes (experimental conditions) which were characterized by the original properties and after a thermal conditioning wich consisted of a freezing phase (-18 °C for 16 hours) and a thawing phase (60 °C for 24 hours). Findings indicate that (i) no one mix was considered susceptible to moisture damage, however the ITR (indirect tensile ratio) of the CAP 50/70 mixes resulted ITR near to protocol admissible values; (ii) in general, CAP 50/70+SBS mixes presented higher resilient modulus, indirect tensile strength and indirect tensile ratio values, (iii) the addition of hydrated lime did not show remarkable changes in original properties, nevertheless it contributed for maintaining or increasing the moisture damage resistance; (iv) short and long term aging procedures (ASTM and AASHTO) did not cause important changes in original properties and after conditioning the mixes showed similar behavior tendencies.
Lucena, Maria. "Caracterização química e reológica de asfaltos modificados por polímeros." reponame:Repositório Institucional da UFC, 2005. http://www.repositorio.ufc.br/handle/riufc/2080.
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Neste trabalho foi realizado o estudo da caracterização quimica e reologica do cimento asfaltico produzido recentemente no pais, oriundo de petroleo do Campo Fazenda Alegre, no estado do Espirito Santo. Para efeito de comparação, tambem foram estudados os asfaltos da refinaria Vale do Paraiba e os estrangeiros arabe e venezuelano. Os asfaltos foram modificados por incorporação dos polimeros SBS e EVA, e os efeitos resultantes da modificação foram avaliados. Os parâmetros investigados visaram a avaliação de problemas usuais como: deformação permanente, trincas termicas e oxidação. Os polimeros foram caracterizados atraves de termogravimetria e calorimetria exloratoria diferencial e por espectroscopia no infravermelho. Os asfaltos puros e modificados foram caracterizados por espectroscopia no infravermelho, ressonância magnetica nuclear, calorimetria exploratoria diferencial, termogravimetria e cromatografia de permeação em gel. A composição quimica foi realizada atraves do fracionamento SARA e teor de enxofre. Ensaios empiricos como ponto d amolecimento, penetração e retorno elastico tambem foram realizados. As propriedades reologicas foram avaliadas através da viscosidade absoluta e de ensaios dinâmico-mecânicos. O envelhecimento oxidativo dos asfaltos foi avaliado a partir da analise dos espectros no infravermelho e de ressonância magnética nuclear, alem da variação do modulo complexo de cisalhamento dinâmico. Observou-se que os asfaltos brasileiros diferem em relação aos teores de carbonos aromáticos, quando comparados com o asfalto árabe. Alem disso, apresentam comportamento diversos frente à presença de oxigênio. Nos asfaltos modificados pos SBS, o ensaio de calorimetria exploratória diferencial mostrou uma diminuição na transição vítrea do material. A presença do SBS aumentou a resistência do asfalto ao processo oxidativo. A adição do SBS e do EVA provocou um aumento da viscosidade do asfalto de forma não linear indicando que os polímeros não são aditivos inertes. O comportamento Newtoniano não foi verificado para os ligantes modificados. Ensaios dinâmicos-mecânicos demonstraram que o SBS elevou o grau de desempenho dos ligantes. Os ensaios com as aparas da industria de calçados (EVA), indicaram uma melhoria na elasticidade do ligante.
Foretti, Alexandre Cagnani. "Estudo de misturas preparadas com asfalto convencional e asfalto modificado com polímeros." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18137/tde-06032018-114401/.
Full textThe aim of this work is to evaluate the behaviour of two asphaltic mixtures prepared with different kinds of asphalts, one with conventional asphalt (CAP 20) and the other one with modified asphalt by addition of polymers (BETUFLEX B 80/60), from the results of the two different tests, the Marshall test and the static creep test. The latter test allows to estimate the asphaltic mixture resistance against the formation of the rut depth or the permanent deformation. The results of the Marshall did not allow to conclude if there was improvement in the performance of the asphaltic mixtures due to the addition of polymers, excluding only one feature, the stability, that showed always greater to the mixture made with the conventional asphalt, independently of the content used. As far as the results from the static creep test are concerned, it is possible to conclude that there is a tendency of improvement in the behaviour of the mixtures prepared with asphalt modified with polymer.
Silveira, Márcio Albuquerque. "Estudo sobre adição de polímero em areia-asfalto a frio." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18137/tde-05012004-151230/.
Full textCold sand-asphalt surface layer, although not widely used, is an important alternative for construction of low traffic roads in Ceará State. This work presents a comparative study between cold sand-asphalt mixtures produced with standart asphaltic emulsion and polymer modified emulsion. The aim of this research is to evaluate, with use of dynamic and static creep tests and the Cantabro wear out test, if the use of a polymer modified emulsion would result in a cold sand-asphalt mixture more resistent to wear out and permanent deformation. The asphaltic mixes analyzed in this research presented high wear out resistence, but due to dificulties occurred in creep tests there were not found evidences that the use of polymer modified emulsion would produce a more resistent cold sand-asphalt mixture