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**Harvard**

TAHERSHAMSI, H. (2017) *Finite Element Model Evaluation using Factorial Design: Simulation of Chloride diffusion in 3D heterogeneous concrete*. Göteborg : Chalmers University of Technology

** BibTeX **

@mastersthesis{

TAHERSHAMSI2017,

author={TAHERSHAMSI, HOSSEIN},

title={Finite Element Model Evaluation using Factorial Design: Simulation of Chloride diffusion in 3D heterogeneous concrete},

abstract={Concrete structures should be capable of withstanding the conditions throughout the serviceability of
the structure. Due to the exposure of the external agents arising from the environment e.g. chloride
ions, concrete structures will gradually deteriorate. Transport of chloride ions in concrete is a complex
phenomenon which is hard to predict and model. However, modelling is highly preferable as a means for
assessing and predicting the behaviour of existing concrete structures, such as bridges.
The behaviour of such models, nevertheless, need to be evaluated as a prediction tool in order to
optimise cost and time of experimental studies. The general aim is to perform a statistical method called
"factorial design" on sets of outputs taken from a 3D heterogeneous concrete model. The obtained results
are used to observe the main effects and interactions of different factors.
Two different cases of chloride transport are investigated: stationary and transient diffusion. The
analysis of stationary case shows a proper relation between aggregate content and Interfacial Transition
Zone(ITZ) diffusivity. A resolution IV fractional factorial was designed for six factors of the transient
model. The data shows that more gravel content increases the time for chloride ions to reach the chloride
threshold. Three dominant parameters- gravel content, cement storage capacity and cement diffusivitywere
screened to perform a full factorial design. No specific interactions were observed among the
three studied parameters. However, the influence of higher order interactions were noticed between the
fractional and full factorial design. },

publisher={Institutionen för bygg- och miljöteknik, Konstruktionsteknik, Chalmers tekniska högskola},

place={Göteborg},

year={2017},

keywords={Diffusion, FE simulation, Factorial design, Computational homogenization, Concrete},

note={34},

}

** RefWorks **

RT Generic

SR Print

ID 254867

A1 TAHERSHAMSI, HOSSEIN

T1 Finite Element Model Evaluation using Factorial Design: Simulation of Chloride diffusion in 3D heterogeneous concrete

YR 2017

AB Concrete structures should be capable of withstanding the conditions throughout the serviceability of
the structure. Due to the exposure of the external agents arising from the environment e.g. chloride
ions, concrete structures will gradually deteriorate. Transport of chloride ions in concrete is a complex
phenomenon which is hard to predict and model. However, modelling is highly preferable as a means for
assessing and predicting the behaviour of existing concrete structures, such as bridges.
The behaviour of such models, nevertheless, need to be evaluated as a prediction tool in order to
optimise cost and time of experimental studies. The general aim is to perform a statistical method called
"factorial design" on sets of outputs taken from a 3D heterogeneous concrete model. The obtained results
are used to observe the main effects and interactions of different factors.
Two different cases of chloride transport are investigated: stationary and transient diffusion. The
analysis of stationary case shows a proper relation between aggregate content and Interfacial Transition
Zone(ITZ) diffusivity. A resolution IV fractional factorial was designed for six factors of the transient
model. The data shows that more gravel content increases the time for chloride ions to reach the chloride
threshold. Three dominant parameters- gravel content, cement storage capacity and cement diffusivitywere
screened to perform a full factorial design. No specific interactions were observed among the
three studied parameters. However, the influence of higher order interactions were noticed between the
fractional and full factorial design.

PB Institutionen för bygg- och miljöteknik, Konstruktionsteknik, Chalmers tekniska högskola,

LA eng

OL 30