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Post cracking behaviour of fibre reinforced concrete with mineral wool fibers residues

Identifiers
URI: http://hdl.handle.net/20.500.12251/1427
ISSN: 2261-236X
DOI: 10.1051/matecconf/201817402016
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Author
Kosior Kazberuk, Marta; Krassowska, Julita; Piña Ramírez, Carolina
Date
2018-04
Subject/s

Residuos de Construcción Demolición (RCD)

Lana mineral

Reciclaje - Construcción

Ensayos (propiedades o materiales)

Impacto medioambiental

Hormigón reciclado

Hormigón

Resistencia mecánica

Ensayos (propiedades o materiales)

Propiedades mecánicas

Unesco Subject/s

3313.04 Material de Construcción

3308.02 Residuos Industriales

3308.07 Eliminación de Residuos

3312.02 Aglomerantes

3312.08 Propiedades de Los Materiales

3312.12 Ensayo de Materiales

2211.02 Materiales Compuestos

3305.33 Resistencia de Estructuras

3312.09 Resistencia de Materiales

Abstract

The research concerns the feasibility of recycling fibers from mineral wool residues from construction and demolition waste, by incorporating them into a fine grained concrete. All the specimens of concrete with various types of fibers have been subjected to the mechanical tests of flexural and compressive strength. Also the pre-cracking and postcracking softening behaviour of concrete with fiber residues has been investigated. The flexural load-CMOD and load-deflection relationships, obtained in three-point bending test, have been used to determine the fracture parameters: fracture energy, critical stress intensity factor, critical crack tip opening displacement, critical effective crack length. It was verified that the incorporation of mineral residues to a cement concrete is a viable alternative for their recycling; the new composites analyzed maintain adequate mechanical properties for different application.

The research concerns the feasibility of recycling fibers from mineral wool residues from construction and demolition waste, by incorporating them into a fine grained concrete. All the specimens of concrete with various types of fibers have been subjected to the mechanical tests of flexural and compressive strength. Also the pre-cracking and postcracking softening behaviour of concrete with fiber residues has been investigated. The flexural load-CMOD and load-deflection relationships, obtained in three-point bending test, have been used to determine the fracture parameters: fracture energy, critical stress intensity factor, critical crack tip opening displacement, critical effective crack length. It was verified that the incorporation of mineral residues to a cement concrete is a viable alternative for their recycling; the new composites analyzed maintain adequate mechanical properties for different application.

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