SMALL SCALE FRACTURE PROPERTIES OF CEMENT PASTE AND ALKALI-ACTIVATED FLY ASH

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00325913" target="_blank" >RIV/68407700:21110/18:00325913 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
SMALL SCALE FRACTURE PROPERTIES OF CEMENT PASTE AND ALKALI-ACTIVATED FLY ASH
Original language description
The paper shows novel methodology and quantitative results of small scale elastic and fracture properties of cement paste and alkali-activated fly ash constituents at the level of micrometers. Local Young’s moduli, tensile strengths and fracture energies are derived from nanoindentation and micro-beam bending on microscale specimens prepared with focused ion beam milling. It is shown that the main cement hydration products (inner and outer products) that are rich of C-S-H gel reach tensile strength of 260-700 MPa. N-A-S-H gel in alkaliactivated fly ash is characterized with the mean strength of 340 MPa. The values are several orders of magnitude higher compared to their macroscopic counterparts. Supremum fracture energies were found in the range 4-20 J/m2 on individual microstructural components.
Czech name
—
Czech description
—

Project
<a href="/en/project/GA17-05360S" target="_blank" >GA17-05360S: Small-scale fracturing of amorphous and crystalline materials assessed with nanoindentation and focused ion beam</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)