Reaction kinetics of basaltic elements in cementitious matrices: Theoretical considerations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00370806" target="_blank" >RIV/68407700:21110/23:00370806 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1742-6596/2628/1/012011" target="_blank" >http://dx.doi.org/10.1088/1742-6596/2628/1/012011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/2628/1/012011" target="_blank" >10.1088/1742-6596/2628/1/012011</a>

Result language

angličtina

Original language name

Reaction kinetics of basaltic elements in cementitious matrices: Theoretical considerations

Original language description

Basalt fibers, the frequently mentioned alternative to those made of steel, possess very good mechanical properties and temperature resistance. The alkaline environment of cement matrix makes it vulnerable due to partial fiber decomposition by the effects of OH- ions. This paper aims at computational modelling of such reactions in order to approximate the course of degradation or to predict it lately. The isothermal reaction models are discussed to reveal their strong/weak points by means of fundamental reaction mechanisms analysis. The shape factor and diffusion-based deceleration of the reactions are mentioned as the most significant ones in that respect. The model accuracy is quantified based on fitting the modelling outputs to reference experimental data. The effect of discussion was found to be the most significant factor as the model fitting reached the lowest RMSE (0.0047). Further application of a diffusion model is therefore recommended. The geometrical models need to have reaction rate reduction explicitly incorporated in the reaction constant, otherwise inapplicable data is produced (RMSE = 0.0193).

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/GA21-00800S" target="_blank" >GA21-00800S: Chemical and physical interactions of basalt-based reinforcement with cementitious matrix</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Article name in the collection

Journal of Physics: Conference Series 2628 (2023)

ISBN

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ISSN

1742-6588

e-ISSN

1742-6596

Number of pages

6

Pages from-to

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Publisher name

IOP Publishing Ltd.

Place of publication

Bristol

Event location

Poprad

Event date

Sep 6, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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