Performance evaluation of fire resistant characteristics in polypropylene fiber concrete

Packialakshmi, S.; Krishnakumar,; Erskine, Solomon; Anuradha, B.

doi:10.1016/j.matpr.2021.04.445

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…When internal stress exceeds the value of the tensile strength of con-crete, an explosive cracking occurs. Characteristics of the optimal size of fibres for increasing the resistance against explosive spalling were solved within numerous papers [12][13][14]. When using any polypropylene microfibres in concrete, the spalling is reduced.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of fibres based on secondary raw materials and their use in concrete technology

Sedlmajer,

Bubeník,

Zach

et al. 2024

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Different types of fibres in cementitious composites, particularly in concrete, are currently used for a number of reasons. Fibres are being added to improve mechanical properties (especially steel and glass fibres), to increase the durability – to reduce occurrence of microcracks during the concrete aging (mainly synthetic and cellulose fibres), or to increase the fire resistance (polypropylene fibres). Within the study, characterization of different types of alternative fibres (fibres generated during waste recycling that would otherwise end in incinerators or landfills) with possible use in cementitious composites. These were fibres from recycled PET bottles, paper, and mineral wool, whose properties were compared to the traditionally used cellulose and polypropylene fibres. In the experimental part, the thickness, length, shape, and surface of individual fibres were monitored by an optical microscope. Furthermore, the amount of heat of combustion was determined by the calorimetric method, and the differential thermal analysis (DTA) was carried out for determination of the impact of high temperature on monitored fibres. The microstructure of fibres was monitored using a scanning electron microscope. The focus of the experimental study was on fibres usable in concrete and capable of enduring high temperature stress.

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Section: Introductionmentioning

confidence: 99%

Characteristics of fibres based on secondary raw materials and their use in concrete technology

Sedlmajer,

Bubeník,

Zach

et al. 2024

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Compendio de investigaciones sobre concreto en estructuras de pavimento rígido reforzadas con fibras de polipropileno

Blas Cano,

Alvarado Vergara,

Depaz Romero

et al. 2024

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El presente trabajo recopila diversas investigaciones sobre la influencia del concreto con aditivos de fibras de polipropileno (FPP). Se emplea una metodología exploratoria-descriptiva-cuantitativa, sin intervención directa en el proceso de investigación. La muestra incluye estudios relevantes desarrollados a nivel local, nacional e internacional, centrados en pavimentos rígidos. Los estudios locales destacan la mejora en la f’c y MR con la adición de FPP, aunque dosis excesivas pueden reducir estas propiedades. La dosificación óptima de FPP suele estar en torno al 6% respecto al peso del cemento. A nivel nacional, se realizan investigaciones sobre la fisuración, resistencia y trabajabilidad del concreto, variando las dosificaciones de FPP y los métodos de evaluación. Internacionalmente, se examina la resistencia a tensiones, durabilidad y rendimiento del concreto, con énfasis en la resistencia a la abrasión y la temperatura. Los resultados muestran mejoras en resistencia y durabilidad con la adición de FPP, aunque la dosificación óptima y los efectos en las propiedades del concreto varían según las condiciones específicas de cada estudio. Se determinó que el concreto reforzado con FPP puede mejoran notablemente las propiedades y la durabilidad del pavimento rígido. Esto tiene resultado favorable en la resistencia f’c, flexión y fatiga del pavimento, así como en su capacidad para resistir el agrietamiento y la abrasión.

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Performance evaluation of fire resistant characteristics in polypropylene fiber concrete

Cited by 2 publications

References 4 publications

Characteristics of fibres based on secondary raw materials and their use in concrete technology

Characteristics of fibres based on secondary raw materials and their use in concrete technology

Compendio de investigaciones sobre concreto en estructuras de pavimento rígido reforzadas con fibras de polipropileno

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