[Faculty] Fwd: [CSRC.COLLOQUIUM] "Towards Increase Resilience, Durability, and Sustainability: Computational Modeling and Visualization of Civil Infrastructure Materials"

[Jose Castillo]

[image: SDSU_CSRC Logo.jpg]



DATE:  *Friday, January 31, 2020*



TITLE:

*Towards Increase Resilience, Durability, and Sustainability: Computational
Modeling and Visualization of Civil Infrastructure Materials*


TIME:  *3:00-4:00PM*




LOCATION:
*GMCS 314*




SPEAKER/BIO:


*Dr. Marta Miletić, Assistant Professor,  Department of Civ**il,
Construction, and Environmental Engineering, SDSU*





ABSTRACT:

A low ratio between the compressive strength of concrete and its cost makes
concrete one of the most widely used construction materials in civil
engineering. Despite of an excellent response to compressive stress,
concrete exhibits a low tensile strength and limited tensile strain
capacity. Adding short discrete fibers to a cementitious matrix can
significantly improve its performance under tensile stress, thus ultimately
exhibiting a ductile behavior. Nevertheless, in spite of their beneficial
properties fiber reinforced cementitious composites remain underutilized in
engineering practice. One of the main reasons for this is a lack of
adequate characterization of the fiber distribution within the matrix, as
well as a lack of analysis methods that would allow engineers to
incorporate fiber-reinforced structural concrete elements into their
design. Therefore, this research has three key objectives: 1) to
computationally model a stress-strain response of high-performance
fiber-reinforced cementitious composites in uniaxial tension and uniaxial
compression prior to macro-crack localization, 2) to develop and perform a
diagnostic strain localization analysis for high-performance
fiber-reinforced cementitious composites, the results of which can
characterize effects of fibers on failure precursors, and 3) to quantify
the effects of aspect ratio, time/duration of pouring, and the effect of
rebar placement on the fiber orientation using dynamic X-ray radiography.



Host: Satchi Venkataraman

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