Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Micromechanical Structure-Property Relationships for the Damage Analysis of Impact-Loaded Sustainable Concrete
In this study, quantitative microstructure-property relationships are mainly used to characterize the damage due to high-strain-rate impact loading and the mechanical behavior of concretes prepared by substituting natural aggregate (gravel) with recycled aggregates having different rigidities (blue brick and rubber). Based on the results obtained, a possible mechanism for microstructural damage in concrete is proposed. It is concluded that the aggregate causes a change in the initial interfacial transition zone (ITZ) condition, and it is this altered ITZ condition that has a major effect on overall mix behavior. The analysis also indicates that there is almost a linear correlation between the roughness values (Ra) of the region near the paste–aggregate interface and the dissipated surface fracture energy values of the specimens. Moreover, three-dimensional topographic images of the specimens constructed using a vertical nanotech scanning interferometer show that the paste region of the gravel specimen has the smoothest profile due to the relatively strong hydrated paste.
Micromechanical Structure-Property Relationships for the Damage Analysis of Impact-Loaded Sustainable Concrete
In this study, quantitative microstructure-property relationships are mainly used to characterize the damage due to high-strain-rate impact loading and the mechanical behavior of concretes prepared by substituting natural aggregate (gravel) with recycled aggregates having different rigidities (blue brick and rubber). Based on the results obtained, a possible mechanism for microstructural damage in concrete is proposed. It is concluded that the aggregate causes a change in the initial interfacial transition zone (ITZ) condition, and it is this altered ITZ condition that has a major effect on overall mix behavior. The analysis also indicates that there is almost a linear correlation between the roughness values (Ra) of the region near the paste–aggregate interface and the dissipated surface fracture energy values of the specimens. Moreover, three-dimensional topographic images of the specimens constructed using a vertical nanotech scanning interferometer show that the paste region of the gravel specimen has the smoothest profile due to the relatively strong hydrated paste.
Micromechanical Structure-Property Relationships for the Damage Analysis of Impact-Loaded Sustainable Concrete
Erdem, Savaş (Autor:in) / Dawson, Andrew Robert (Autor:in) / Thom, Nicholas Howard (Autor:in)
Journal of Materials in Civil Engineering ; 25 ; 597-609
27.08.2012
132013-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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