Influence of content and particle size of waste pet bottles on concrete behavior at different w/c ratios |
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Authors: | C Albano N Camacho M Hernndez A Matheus A Gutirrez |
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Institution: | aUniversidad Central de Venezuela, Facultad de Ingeniería, Caracas, Venezuela;bUniversidad Simón Bolívar, Departamento de Mecánica, Caracas, Venezuela |
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Abstract: | The goal of this work was to study the mechanical behavior of concrete with recycled Polyethylene Therephtalate (PET), varying the water/cement ratio (0.50 and 0.60), PET content (10 and 20 vol%) and the particle size. Also, the influence of the thermal degradation of PET in the concrete was studied, when the blends were exposed to different temperatures (200, 400, 600 °C). Results indicate that PET-filled concrete, when volume proportion and particle size of PET increased, showed a decrease in compressive strength, splitting tensile strength, modulus of elasticity and ultrasonic pulse velocity; however, the water absorption increased. On the other hand, the flexural strength of concrete-PET when exposed to a heat source was strongly dependent on the temperature, water/cement ratio, as well as on the PET content and particle size. Moreover, the activation energy was affected by the temperature, PET particles location on the slabs and water/cement ratio. |
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