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An Influence of Interfacial Transition Zone on Local and Overall Fracture Response of Cementitious Composites

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU125266" target="_blank" >RIV/00216305:26110/17:PU125266 - isvavai.cz</a>

  • Výsledek na webu

  • DOI - Digital Object Identifier

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    An Influence of Interfacial Transition Zone on Local and Overall Fracture Response of Cementitious Composites

  • Popis výsledku v původním jazyce

    In this paper, the fracture properties of ITZ of fine-grained cement based composite with different types of rock inclusion – basalt, granite, marble and amphibolite – were studied. Specimens with the initial stress concentrator were tested in standard three-point bending configuration and overall macroscopic fracture response was assessed. Nominal dimensions of test specimens were 40 x 40 x 160 mm, the notch depth was approximately 1/3 of specimen depth. Rock inclusions were placed above the initial notch (in the middle of specimen depth) and dimensions of rock inclusions were 8 x 8 x 40 mm. After the fracture tests had been performed, microstructure of fracture surfaces were studied by means of light and electron microscopes. Local ITZ response was characterized by nanoindentation technique in the vicinity of rock inclusions. Local elastic modulus, hardness and viscous properties of ITZ were assessed. It has been shown the ITZ is mechanically weaker compared to the bulk matrix in the region of ca.

  • Název v anglickém jazyce

    An Influence of Interfacial Transition Zone on Local and Overall Fracture Response of Cementitious Composites

  • Popis výsledku anglicky

    In this paper, the fracture properties of ITZ of fine-grained cement based composite with different types of rock inclusion – basalt, granite, marble and amphibolite – were studied. Specimens with the initial stress concentrator were tested in standard three-point bending configuration and overall macroscopic fracture response was assessed. Nominal dimensions of test specimens were 40 x 40 x 160 mm, the notch depth was approximately 1/3 of specimen depth. Rock inclusions were placed above the initial notch (in the middle of specimen depth) and dimensions of rock inclusions were 8 x 8 x 40 mm. After the fracture tests had been performed, microstructure of fracture surfaces were studied by means of light and electron microscopes. Local ITZ response was characterized by nanoindentation technique in the vicinity of rock inclusions. Local elastic modulus, hardness and viscous properties of ITZ were assessed. It has been shown the ITZ is mechanically weaker compared to the bulk matrix in the region of ca.

Klasifikace

  • Druh

    O - Ostatní výsledky

  • CEP obor

  • OECD FORD obor

    20101 - Civil engineering

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/GA16-18702S" target="_blank" >GA16-18702S: Problematika porušování v blízkosti rozhraní plniva a matrice kompozitů na silikátové bázi (AMIRI)</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Ostatní

  • Rok uplatnění

    2017

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů