6 research outputs found
Modeling and simulation of chloride diffusion in concrete with recycled aggregates
The concrete along with steel, are the
responsibility structural material required to respond to
mechanical stresses; specifically, the tensile stresses are borne by
the steel, and it is this material that involvement of durability can
lose their resilience. Corrosion of steel is one of the main causes of
this affectation in the steel, and this is caused by the entry of
chloride ions in the called phenomenon diffusion.
This phenomenon is governed by the diffusion equations of
the Fick's first and second law [1]; for these, there are several
models that describe the behavior of chloride diffusion in
conventional concrete, but nevertheless, not in the recycled
concrete.
In this paper, are used as basis, the models of Janzhuang
Xiao et al. [2] and Long-Yuang Li et al. [3] to model and simulate
the phenomenon of chloride diffusion in concrete with recycled
aggregates; for which it has been used a five-phase model for the
aggregate: old and new Interfacial Transition Zones (ITZ), new
and old mortar, and original aggregate. Furthermore, in this
model were considered as variables the Thickness of the
Interfacial Transition Zone (TITZ), the rate of old mortar
adhered, the volume fraction of the aggregates and the continuity
of the ITZ. The model considered, was composed by aPeer ReviewedPostprint (published version
Modeling and simulation of chloride diffusion in concrete with recycled aggregates
The concrete along with steel, are the responsibility structural material required to respond to mechanical stresses; specifically, the tensile stresses are borne by the steel, and it is this material that involvement of durability can lose their resilience. Corrosion of steel is one of the main causes of this affectation in the steel, and this is caused by the entry of chloride ions in the called phenomenon diffusion.
This phenomenon is governed by the diffusion equations of the Fick's first and second law [1]; for these, there are several models that describe the behavior of chloride diffusion in conventional concrete, but nevertheless, not in the recycled concrete.
In this paper, are used as basis, the models of Janzhuang Xiao et al. [2] and Long-Yuang Li et al. [3] to model and simulate the phenomenon of chloride diffusion in concrete with recycled aggregates; for which it has been used a five-phase model for the aggregate: old and new Interfacial Transition Zones (ITZ), new and old mortar, and original aggregate. Furthermore, in this model were considered as variables the Thickness of the Interfacial Transition Zone (TITZ), the rate of old mortar adhered, the volume fraction of the aggregates and the continuity of the ITZ. The model considered, was composed by aPeer ReviewedPostprint (published version
Recycled Conductive Mortar
Due to the urgent need to care for the environment, the use of recycled materials is necessary. The creation of multifunctional materials with content of recycled materials presents an alternative to reduce the use of natural resources. This is through the addition of recycled fine aggregate, product of industrial waste in its manufacture, such as graphite powder (GP) and carbon fiber (CF), turning it into conductive recycled mortar (CRM). The sustainability of this new material brings great ecological benefits, such as the reduction in the use of fine aggregates, which are naturally present in rivers, and also, lower production of construction waste sent to landfills. In this research, an evaluation of the effect of the addition of carbon fiber and graphite powder on wet, dry and hardened electrical properties, electrical percolation in dry state, and flowability of the mixture of recycled conductive mortar in a wet state-based on cement―fine aggregate from waste blocks―graphite powder was carried out. The results obtained showed the effect of the addition of GP and CF to the mortar mix, mainly the reduction of its flowability, caused by the physical interaction between the recycled sand or recycled fine aggregate RFA and the carbon fiber CF, as well as the graphite powder GP
Modeling and simulation of chloride diffusion in concrete with recycled aggregates
The concrete along with steel, are the responsibility structural material required to respond to mechanical stresses; specifically, the tensile stresses are borne by the steel, and it is this material that involvement of durability can lose their resilience. Corrosion of steel is one of the main causes of this affectation in the steel, and this is caused by the entry of chloride ions in the called phenomenon diffusion.
This phenomenon is governed by the diffusion equations of the Fick's first and second law [1]; for these, there are several models that describe the behavior of chloride diffusion in conventional concrete, but nevertheless, not in the recycled concrete.
In this paper, are used as basis, the models of Janzhuang Xiao et al. [2] and Long-Yuang Li et al. [3] to model and simulate the phenomenon of chloride diffusion in concrete with recycled aggregates; for which it has been used a five-phase model for the aggregate: old and new Interfacial Transition Zones (ITZ), new and old mortar, and original aggregate. Furthermore, in this model were considered as variables the Thickness of the Interfacial Transition Zone (TITZ), the rate of old mortar adhered, the volume fraction of the aggregates and the continuity of the ITZ. The model considered, was composed by aPeer Reviewe
Modeling and simulation of chloride diffusion in concrete with recycled aggregates
The concrete along with steel, are the responsibility structural material required to respond to mechanical stresses; specifically, the tensile stresses are borne by the steel, and it is this material that involvement of durability can lose their resilience. Corrosion of steel is one of the main causes of this affectation in the steel, and this is caused by the entry of chloride ions in the called phenomenon diffusion.
This phenomenon is governed by the diffusion equations of the Fick's first and second law [1]; for these, there are several models that describe the behavior of chloride diffusion in conventional concrete, but nevertheless, not in the recycled concrete.
In this paper, are used as basis, the models of Janzhuang Xiao et al. [2] and Long-Yuang Li et al. [3] to model and simulate the phenomenon of chloride diffusion in concrete with recycled aggregates; for which it has been used a five-phase model for the aggregate: old and new Interfacial Transition Zones (ITZ), new and old mortar, and original aggregate. Furthermore, in this model were considered as variables the Thickness of the Interfacial Transition Zone (TITZ), the rate of old mortar adhered, the volume fraction of the aggregates and the continuity of the ITZ. The model considered, was composed by aPeer Reviewe
Modeling and simulation of chloride diffusion in concrete with recycled aggregates
The concrete along with steel, are the
responsibility structural material required to respond to
mechanical stresses; specifically, the tensile stresses are borne by
the steel, and it is this material that involvement of durability can
lose their resilience. Corrosion of steel is one of the main causes of
this affectation in the steel, and this is caused by the entry of
chloride ions in the called phenomenon diffusion.
This phenomenon is governed by the diffusion equations of
the Fick's first and second law [1]; for these, there are several
models that describe the behavior of chloride diffusion in
conventional concrete, but nevertheless, not in the recycled
concrete.
In this paper, are used as basis, the models of Janzhuang
Xiao et al. [2] and Long-Yuang Li et al. [3] to model and simulate
the phenomenon of chloride diffusion in concrete with recycled
aggregates; for which it has been used a five-phase model for the
aggregate: old and new Interfacial Transition Zones (ITZ), new
and old mortar, and original aggregate. Furthermore, in this
model were considered as variables the Thickness of the
Interfacial Transition Zone (TITZ), the rate of old mortar
adhered, the volume fraction of the aggregates and the continuity
of the ITZ. The model considered, was composed by aPeer Reviewe