Effect of elevated temperature on flexural behavior and fibers-matrix bonding of recycled PP fiber-reinforced cementitious composite

Francioso, Vito; Moro, Carlos; Castillo, A.; Velay-Lizancos, Mirian

doi:10.1016/j.conbuildmat.2020.121243

Cited by 30 publications

(12 citation statements)

References 26 publications

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“…El tornillo extrusor fue operado a una temperatura promedio de 185 °C en la zona de dosificación, en la zona de transición y compresión a una temperatura promedio de 175 °C y en la zona de alimentación a una temperatura promedio de 162 °C, variando la velocidad del tornillo entre 80 a 500 rpm en rangos de 50 hasta conseguir una presión de extrusión adecuada para cada tratamiento (14).…”

Section: Elaboración Del Materials Com-puesto Con Fibra Vegetalunclassified

“…Mientras que se denominan como C1, C2 y C3 las probetas que corresponden a las composiciones de acoplante añadido en la matriz de PP/PET, al 1, 2, 3 % de PET respectivamente. En la Figura 3 y 4. se presenta las curvas de resistencia a los esfuerzos de tracción, para refuerzo tanto con fibra como con PET reciclado con y sin acoplante, donde se puede ver que las de tipo C presentan un mayor esfuerzo máximo esto debido a que el acoplante fortalece el composite al ayudar en la interfaz entre el PP y el PET y aumenta su resistencia consiguiendo valores cercanos a los 20 MPa (14,17).…”

Section: Propiedades Físicas Polipropileno Y Polietileno Tereftalatounclassified

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Mejoramiento De Las Propiedades Mecánicas Del Polipropileno Reciclado Mediante Adición De Fibras Vegetales, Polietilen Terftalato Y Tratamiento Térmico.

Palmay

Sanipatin

Poalacin

et al. 2022

Perf

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En los residuos sólidos plásticos el polipropileno es uno de los termoplásticos de mayor consumo a nivel urbano y por ende el de mayor generación de residuos. En este sentido, el reciclaje mecánico es la tecnica mas sencilla de aplicación aprovechando de residuos de la misma familia de termoplastico que acondicionado con otras fibras permiten el mejoramiento de sus propiedades, mediante la elaboración de composites con fibras naturales o sinteticas. El presente estudio tiene como objetivo el analisis de las propiedades más importantes de composites hechos de poliproplieno con fibras naturales: de plátano y de abacá; composites de polipropileno con polietilen tereftalato a diferentes concentraciones, con y sin acoplante; y un tratamiento termico para el mejoramiento de la matriz de polipropileno reciclado. Se obtienen probetas mediante extrusión de monohusillo a diferentes perfiles de temperatura y concentraciones de fibra adicionada. Se plantea el tratamiento térmico al polipropileno midiendo el grado de cristalización que se genera. Posterior, se mide la tracción, flexión y calorimetría diferencial de barrido de los composites de buena trabajabilidad usando como acoplante anhidrido terftalico. Los resultados muestran mejoras en las propiedades de tracción y flexión al momento de adición del agente acoplante en ambos composites y con concentraciones bajas de fibra de refuerzo.

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Section: Elaboración Del Materials Com-puesto Con Fibra Vegetalunclassified

Section: Propiedades Físicas Polipropileno Y Polietileno Tereftalatounclassified

Mejoramiento De Las Propiedades Mecánicas Del Polipropileno Reciclado Mediante Adición De Fibras Vegetales, Polietilen Terftalato Y Tratamiento Térmico.

Palmay

Sanipatin

Poalacin

et al. 2022

Perf

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“…Allami, K. and Colombi, P. et al [ 32 ] studied and calculated the tensile properties of epoxy resin and CFRP sheets and the fracture energy of the CFRP concrete interface. In particular, Francisco, V. and Moro, C. et al [ 33 ] evaluated the flexural strength, toughness, and adhesion of recycled polypropylene fiber-reinforced cementitious materials under high-temperature exposure, mainly using DIC and a scanning electron microscope (SEM). At the same time, some researchers analyzed the damage performance of concrete and rocks based on the data acquisition results of DIC [ 34 , 35 , 36 , 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Compression Deformation and Damage Characteristics of Pine Needle Fiber-Reinforced Concrete Using DIC

Wang

Gao

2022

Materials

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Natural fiber-reinforced concrete (NFRC) has the advantages of environmental protection, energy conservation and regeneration. However, studies conducted to improve the macro mechanical properties of concrete by pine needle fiber have achieved good results. In this paper, the deformation and compression damage of pine needle fiber-reinforced concrete (PNFRC) are analyzed by digital image correlation; a fractal dimension is used to quantify the shape of PNFRC after compression damage; and the results of scanning electron microscopy confirm the effect of fiber treatment on deformation and damage of concrete. The results showed that the horizontal strain field of PNFRC has strain concentration zones in the elastic deformation stage, indicating that the fiber enhances the deformation ability of concrete. The defined damage factor can reflect the damage of fiber-reinforced concrete (FRC). The damage curve of natural fiber concrete increases evenly and slowly compared to ordinary concrete.

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“…29 The sensitivity of different fibers to temperature is different. 30 Li studied the effect of high temperature on the microstructure of different fibers. Through multiscale morphology observation and microstructure analysis of the fiber microstructure by a digital camera and an optical microscope, the thermal stability results of different fibers were obtained.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fiber on Rheological Properties and Flow Behavior of Polymer Completion Fluids

et al. 2021

ACS Omega

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The application of fiber in the completion fluid can improve the rheological properties of the completion fluid and the plugging quality of the production layer by the completion fluid and reduce the damage of the filtrate to the reservoir formation. However, there are few studies on the influence of fibers on the rheological properties of completion fluids and the flow behavior in pores. In this paper, plant fiber, mineral fiber, and synthetic fiber are discussed. Carbon fiber, bamboo fiber, polypropylene fiber, and polyester fiber are selected as research objects. The dependence of the rheological property of polymer solution on fiber type, fiber concentration, temperature, and shear rate is evaluated. The evaluation is carried out by observing the microscopic state of the fiber through a microscope and a scanning electron microscope, testing the rheological property parameters of the fiber with an OFITE 900 rheological tester, and fitting with the Herschel−Bulkley model. The results show that polypropylene fiber and carbon fiber have the best dispersion in polymer solution. The higher the fiber content, the greater the influence of fiber on the rheological properties of the solution. Compared with the other three fibers, carbon fiber has the greatest influence on the rheological properties of polymer solution. When the temperature is lower than 70 °C, the influence of the fiber on the rheological properties of the solution is not affected by the temperature. When the temperature exceeds 70 °C, the carbon fiber and polypropylene fiber are affected by the temperature, and the viscosity of the polymer solution is increased. The flow behavior of fiber suspensions in pores varies with the flow factor n. Carbon fiber suspensions are most conducive to the transition of polymer solution to plate laminar flow, which can improve the bearing capacity of plugging materials.

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Effect of elevated temperature on flexural behavior and fibers-matrix bonding of recycled PP fiber-reinforced cementitious composite

Cited by 30 publications

References 26 publications

Mejoramiento De Las Propiedades Mecánicas Del Polipropileno Reciclado Mediante Adición De Fibras Vegetales, Polietilen Terftalato Y Tratamiento Térmico.

Mejoramiento De Las Propiedades Mecánicas Del Polipropileno Reciclado Mediante Adición De Fibras Vegetales, Polietilen Terftalato Y Tratamiento Térmico.

Study on Compression Deformation and Damage Characteristics of Pine Needle Fiber-Reinforced Concrete Using DIC

Effect of Fiber on Rheological Properties and Flow Behavior of Polymer Completion Fluids

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