Mechanical fracture and microstructural parameters of alkali-activated materials with a ceramic precursor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F21%3APU143241" target="_blank" >RIV/00216305:26110/21:PU143241 - isvavai.cz</a>

Result on the web

<a href="http://www.znb.bud.pcz.pl/Mechanical-fracture-and-microstructural-parameters-of-alkali-activated-materials,145239,0,2.html#" target="_blank" >http://www.znb.bud.pcz.pl/Mechanical-fracture-and-microstructural-parameters-of-alkali-activated-materials,145239,0,2.html#</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17512/znb.2021.1.18" target="_blank" >10.17512/znb.2021.1.18</a>

Result language

angličtina

Original language name

Mechanical fracture and microstructural parameters of alkali-activated materials with a ceramic precursor

Original language description

Four sets of alkali-activated aluminosilicate composites based on ceramic precursors were studied in terms of their characterization by mechanical fracture and microstructural parameters. Composites made with brick dust as a precursor and with alkaline activator variants of differing silicate modulus (Ms = 0.8, 1.0, 1.2, 1.4 and 1.6) were investigated. The filler used with first two sets of composites was quartz sand, while in the case of the other two sets it was brick rubble; precursor particle size range variants: 0÷1 mm and 0÷0.3 mm. The test specimens had nominal dimensions of 40 × 40 × 160 mm and were provided with notches at midspan after 28 days of hardening. The notches extended up to 1/3 of the height of the specimens, which were subjected to three-point bending tests in which force vs. displacement diagrams were recorded. Values were determined for the static modulus of elasticity, effective fracture toughness, effective toughness and specific fracture energy using the Effective Crack Model and the Work-of-Fracture method. At the same time, values were identified for the static modulus of elasticity, tensile strength and specific fracture energy using the inverse method based on a neural network ensemble. The measured and identified parameters are in very good agreement. The silicate modulus, type of filler and refinement of the precursor significantly influenced the mechanical fracture parameters of the composites. The microstructure of composites with a coarser precursor was also described.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Zeszyty Naukowe Politechniki Częstochowskiej Budownictwo

ISSN

0526-5916

e-ISSN

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Volume of the periodical

27

Issue of the periodical within the volume

01/2021

Country of publishing house

PL - POLAND

Number of pages

23

Pages from-to

118-140

UT code for WoS article

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EID of the result in the Scopus database

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