A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of recycled coarse aggregates incorporation on the fracture properties of concrete
https://orcid.org/0000-0001-9042-2706
Graphical abstract
HighlightsThe effect of coarse recycled aggregates on the post cracking behavior of concrete.Concrete incorporating coarse recycled aggregates possesses lower fracture energy.The critical crack width decreases with the recycled aggregates content.Relationship between tensils strength and fracture properties.
AbstractThis paper presents the mechanical and fracture properties of a structural concrete incorporating coarse recycled aggregate. Four mixes were designed according to the standard EN 206-1 to achieve S4 consistence class and C35/45 class of strength. Concrete specimens were prepared with different recycled gravel content of 0%, 30%, 65% and 100% by volume of the total coarse gravel.Three points bending tests were performed on 10×10×40cm pre-notched samples in order to determine the flexural strength and fracture properties according to the RILEM recommendations. From experimental Force-CMOD curves, the intrinsic fracture properties were obtained by an inverse analysis using an analytical model and a power law strain-softening relationship. The strain-softening law is described by two parameters being respectively the power n and the critical crack opening displacement wc. It was found that the difference between the calculated fracture energy, GF, and the RILEM fracture energy, GFRILEM, is more pronounced for recycled aggregate concrete.The evolution of n and wc, the parameters of the power strain-softening law, was also studied. It appeared that the power, n, depends on the compressive strength, the aggregate size and the water to binder ratio. For the same class of compressive strength, it remains substantially unchanged when the recycled aggregates content increases. For the critical crack opening wc, it decreases when the substitution ratio increases. Finally, the relationship between fracture properties and the tensile strength has been established.
Influence of recycled coarse aggregates incorporation on the fracture properties of concrete
https://orcid.org/0000-0001-9042-2706
Graphical abstract
HighlightsThe effect of coarse recycled aggregates on the post cracking behavior of concrete.Concrete incorporating coarse recycled aggregates possesses lower fracture energy.The critical crack width decreases with the recycled aggregates content.Relationship between tensils strength and fracture properties.
AbstractThis paper presents the mechanical and fracture properties of a structural concrete incorporating coarse recycled aggregate. Four mixes were designed according to the standard EN 206-1 to achieve S4 consistence class and C35/45 class of strength. Concrete specimens were prepared with different recycled gravel content of 0%, 30%, 65% and 100% by volume of the total coarse gravel.Three points bending tests were performed on 10×10×40cm pre-notched samples in order to determine the flexural strength and fracture properties according to the RILEM recommendations. From experimental Force-CMOD curves, the intrinsic fracture properties were obtained by an inverse analysis using an analytical model and a power law strain-softening relationship. The strain-softening law is described by two parameters being respectively the power n and the critical crack opening displacement wc. It was found that the difference between the calculated fracture energy, GF, and the RILEM fracture energy, GFRILEM, is more pronounced for recycled aggregate concrete.The evolution of n and wc, the parameters of the power strain-softening law, was also studied. It appeared that the power, n, depends on the compressive strength, the aggregate size and the water to binder ratio. For the same class of compressive strength, it remains substantially unchanged when the recycled aggregates content increases. For the critical crack opening wc, it decreases when the substitution ratio increases. Finally, the relationship between fracture properties and the tensile strength has been established.
Influence of recycled coarse aggregates incorporation on the fracture properties of concrete
https://orcid.org/0000-0001-9042-2706
Graphical abstract
HighlightsThe effect of coarse recycled aggregates on the post cracking behavior of concrete.Concrete incorporating coarse recycled aggregates possesses lower fracture energy.The critical crack width decreases with the recycled aggregates content.Relationship between tensils strength and fracture properties.
AbstractThis paper presents the mechanical and fracture properties of a structural concrete incorporating coarse recycled aggregate. Four mixes were designed according to the standard EN 206-1 to achieve S4 consistence class and C35/45 class of strength. Concrete specimens were prepared with different recycled gravel content of 0%, 30%, 65% and 100% by volume of the total coarse gravel.Three points bending tests were performed on 10×10×40cm pre-notched samples in order to determine the flexural strength and fracture properties according to the RILEM recommendations. From experimental Force-CMOD curves, the intrinsic fracture properties were obtained by an inverse analysis using an analytical model and a power law strain-softening relationship. The strain-softening law is described by two parameters being respectively the power n and the critical crack opening displacement wc. It was found that the difference between the calculated fracture energy, GF, and the RILEM fracture energy, GFRILEM, is more pronounced for recycled aggregate concrete.The evolution of n and wc, the parameters of the power strain-softening law, was also studied. It appeared that the power, n, depends on the compressive strength, the aggregate size and the water to binder ratio. For the same class of compressive strength, it remains substantially unchanged when the recycled aggregates content increases. For the critical crack opening wc, it decreases when the substitution ratio increases. Finally, the relationship between fracture properties and the tensile strength has been established.
Influence of recycled coarse aggregates incorporation on the fracture properties of concrete
Ghorbel, Elhem (author) / Wardeh, George (author)
Construction and Building Materials ; 154 ; 51-60
2017-07-25
10 pages
Article (Journal)
Electronic Resource
English
Influence of recycled coarse aggregates incorporation on the fracture properties of concrete
| British Library Online Contents | 2017
Influence of recycled coarse aggregates incorporation on the fracture properties of concrete
| British Library Online Contents | 2017
Influence of recycled coarse aggregates incorporation on the fracture properties of concrete
| Online Contents | 2017
Influence of recycled coarse aggregates incorporation on the fracture properties of concrete
| British Library Online Contents | 2017
Influence of Recycled Plastic Incorporation as Coarse Aggregates on Concrete Properties
| DOAJ | 2023