Estudo do ensaio de destacamento (Pullout) para fibras vegetais inseridas em compósitos cimentícios
Abstract
Various materials are employed daily in the civil construction sector, each with
distinct raw materials, resulting in diverse properties and applications. This sector is
in constant evolution due to the continuous realization of new projects. With the
growing demand for sustainability in all sectors of society, there arises the need to
harness materials that were previously simply discarded. This implies a more
effective utilization of generated waste, also alleviating the pressure on
environmental resources whose acquisition or use significantly impacts the
environment. One strategy to achieve this goal is the development of new materials
that make use of previously purposeless waste. Among these materials, composites
stand out, formed by a matrix whose characteristics are enhanced through the
combination with a reinforcing material. Among the options for reinforcing materials
are plant fibers, which, on their own, present a wide variety, each with its distinct
characteristics. Therefore, studies that seek to assess the specific behavior of each
type of fiber as reinforcement, as well as the methodology used for this evaluation,
are crucial for the development of alternative materials that meet current needs and
provide a broader range of materials with distinct applications for the market. One of
the methodologies employed to assess the incorporation of plant fibers in
cementitious matrices is the pullout test. This test allows testing the effectiveness of
the bond between the fiber and the matrix, as well as determining the critical length
of the fiber, a crucial factor for evaluating the transmission of forces in the material
when subjected to a force. In this context, the present study aimed to investigate the
pullout test methodology through the testing of composite materials with
cementitious matrices reinforced with green coconut fiber ( Cocos nucifera L. ).
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