7 research outputs found

    Influencia del coeficiente estructural de una base reciclada con cemento sobre la deformación permanente en la subrasante – una aproximación con el método Sudrafricano

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    Trabajo de investigaciónEn la investigación se diseñaron pavimentos con una base reciclada con cemento, variando el módulo resiliente de la subrasante y el espesor de la sub-base granular, en cada caso. Para cada uno de los diseños se determinó la respuesta estructural (esfuerzo y deformación en la subrasante) a través de un software y con los resultados obtenidos se determinó la relación entre la deformación permanente en la subrasante y el número de ejes equivalentes correspondientes.1. INTRODUCCIÓN 2. PLANTEAMIENTO DEL PROBLEMA 3. OBJETIVOS 4. MARCO TEÓRICO 5. ESTADO DEL ARTE 6. PREGUNTA DE INVESTIGACIÓN 7. ALCANCES Y LIMITACIONES 8. METODOLOGÍA 9. CÁLCULOS Y RESULTADOS 10. ANÁLISIS DE RESULTADOS 11. CONCLUSIONES Y RECOMENDACIONES 12. BIBLIOGRAFÍAPregradoIngeniero Civi

    Investigating Effects of Nano/SBR Polymer on Rutting Performance of Binder and Asphalt Mixture

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    Rutting is one of the most common distresses in flexible pavements and can affect vehicle controlling features. Although asphalt binder constitutes a small percentage of the asphalt mixture, its properties play a crucial role in pavement performance and its rutting resistance. One way of improving binder properties and rutting resistance is to use additives. In this research, nanoclay and SBR polymer have been simultaneously used to modify 60–70 penetration binder to study rutting resistance of binder and asphalt mixture. To this end, the storage stability, rotational viscosity, DSR, and RCR tests on binder and marshal stability were performed, and dynamic creep and wheel track tests on asphalt mix were performed to assess rutting performance. The test and statistical analysis results indicated that nanoclay has considerably positive impact on rutting and elastic deformation of neat and SBR-modified asphalt binder and mixture

    Fracture toughness of hybrid fibre reinforced concrete

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    In the present paper, the fracture behaviour of HFRC (hybrid fibre reinforced concrete) specimens is examined, with copper and polypropylene fibrillated fibres being randomly distributed in concrete. The modified twoparameter model is employed to compute the critical stress intensity factor (fracture toughness), taking into account the possible kinked crack occurring during the stable crack propagation

    Fracture toughness of hybrid fibre reinforced concrete

    No full text
    In the present paper, the fracture behaviour of HFRC (hybrid fibre reinforced concrete) specimens is examined, with copper and polypropylene fibrillated fibres being randomly distributed in concrete. The modified twoparameter model is employed to compute the critical stress intensity factor (fracture toughness), taking into account the possible kinked crack occurring during the stable crack propagation
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