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      Comportamiento de tubos circulares de hormigón simple producidos con adición de caucho de neumáticos Translated title: Performance of simple concrete pipes produced with the incorporation of rubber tires

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          Abstract

          En este trabajo se estudiaron tubos de hormigón simple elaborados con la adición de caucho de neumáticos en proporciones de 10, 15 y 20 kg/m³ de hormigón. El programa experimental incluye la realización de ensayos de resistencia a la compresión diametral y absorción de agua. Se evaluaron doce tubos, con un diámetro nominal (DN) de 600 mm y longitud de 1500 mm, separados en cuatro series de tres tubos cada una. Cada serie estaba formada por tres tubos tipo punta y bolsa (PB): una serie de control (sin caucho de neumáticos) y tres series con incorporación de tres diferentes concentraciones de caucho en la mezcla para los tubos (TB1, TB2 e TB3). Todos los resultados de los ensayos de resistencia a la compresión diametral presentaron valores superiores a los especificados en la norma NBR 8890 para los tubos de hormigón simple clase PS2: tipo PB con DN de 600 mm, cuyo valor es de 36 kN/m. En los ensayos de absorción de agua, todos los tubos presentaron valores de absorción inferiores al máximo establecido en la norma NBR 8890, cuyo valor es de 8%. Se puede concluir, que el caucho de neumático tiene potencial para ser incorporado en la fabricación de tubos de hormigón simple. No obstante, es imperativo ampliar el conocimiento sobre el comportamiento del hormigón preparado con caucho de neumáticos.

          Translated abstract

          In this work we have studied the performance of simple concrete pipes produced with the incorporation of rubber tires with contents of 10, 15 and 20 kg/m³ of concrete. The experimental program included diametral compression strength and water absorption tests. Twelve pipes were tested and divided into four sets of three pipes of nominal diameter (ND) of 600 mm and length of 1500 mm. Each series consisted of three pipes stub and bag (SB), one control (without rubber tires), and three sets incorporating rubber pipes on the trace (TB1, TB2 and TB3). All test results showed diametrical compressive strength values higher than that specified the NBR 8890 standard, with respect to simple concrete pipes PS2 class: type SB with ND 600 mm, which is 36 kN/m. In the water absorption test all pipes had absorption values less than the maximum established in the NBR 8890 standard, which is 8%. It can be concluded from the results and specific conditions of the tests conducted, that the tire rubber has the potential to be incorporated into the manufacture of simple concrete pipes. However, it is stated that it is necessary to increase the knowledge about the behavior of concretes incorporating rubber tire.

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          Most cited references19

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          Properties of concrete pedestrian block mixed with crumb rubber

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            NBR 5733. Cimento Portland de alta resistência inicial

            (1991)
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              NBR NM 45: agregados: determinação da massa unitária e do volume de vazios

              (2006)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                ric
                Revista ingeniería de construcción
                Rev. ing. constr.
                Pontificia Universidad Católica de Chile. Departamento de Ingeniería y Gestión de la Construcción
                0718-5073
                April 2016
                : 31
                : 1
                : 27-36
                Affiliations
                [1 ] Universidade Estadual Paulista BRAZIL
                Article
                S0718-50732016000100003
                fb8e629e-6aed-4bcb-be6a-48a9f68cfc78

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                SciELO Chile

                Self URI (journal page): http://www.scielo.cl/scielo.php?script=sci_serial&pid=0718-5073&lng=en
                Categories
                ENGINEERING, CIVIL

                Civil engineering
                Tubos de hormigón simple,caucho de neumáticos,compresión diametral,absorción de agua,Simple concrete pipes,rubber tires,diametral compression,water absorption

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