Publicación:
Influencia de las fibras en el Shotcrete en su capacidad de absorción de energía y resistencia a la flexión
Influencia de las fibras en el Shotcrete en su capacidad de absorción de energía y resistencia a la flexión
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Fecha
2017
Autores
Aragon Quispe, Miguel Angel
Cornejo Mamani, Mitward Paul
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Universidad Nacional de San Agustín de Arequipa
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Abstracto
The fiber reinforced shotcrete in our country has its main application in the mining sector, the lack of national standards and guidelines, coupled with poor experimental research has resulted in the benefits that can be achieved from fiber reinforced shotcrete are not fully exploited. This thesis contributes to filling the experimental gap and serves as a basis for the formulation of national standards and guidelines for fiber reinforced shotcrete. The methodology consisted of a pattern design of wet shotcrete without fiber, then designs in which only the fiber dose was varied, designs were made with 10 kg, 20 kg, 30 kg, 40 kg of metallic fiber per cubic meter of concrete and 2 kg, 4 kg, 6 kg and 8 kg of synthetic fiber per cubic meter of concrete. The influence of the fibers in the shotcrete was determined in the workability (ASTM C143), in the compressive strength obtained by 30 tests of cylindrical cores of concrete extracted with diamond of shotcrete panels (ASTM C42), in the flexural strength measured Indirectly through 30 sawn beams of shotcrete panels (EN 14488-3) and energy absorption of 30 square panels according to the European standard (EN 14488-5) and 30 circular panels according to American standard (ASTM C1550). The results showed that the metallic fibers in the shotcrete had a better structural behavior in the deterioration of the resistance than the synthetic fibers, although the same values of absorbed energy and flexural strength were obtained using synthetic fiber at a lower cost.
Descripción
A la Universidad Nacional de San Agustín de Arequipa (UNSA) por el financiamiento a través del convenio CIENCIACTIVA – UNSA, según contrato de subvención N° 149 – 2016 - UNSA “TESIS PARA OPTAR EL TITULO PROFESIONAL UNSA” A Cienciactiva y Concytec por el apoyo en la gestión del proyecto.
Palabras clave
Reforzado con fibra,
Fibras sintéticas