Numerical Analysis of Shrinkage Process Based on Experimental Data

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F20%3APU134765" target="_blank" >RIV/00216305:26110/20:PU134765 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&ID=51724622" target="_blank" >https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&ID=51724622</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14359/51724622" target="_blank" >10.14359/51724622</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Analysis of Shrinkage Process Based on Experimental Data

Popis výsledku v původním jazyce

This paper focuses on the comparison of experimentally obtained data with the shrinkage model B4 designed by a research group led by Professor Z. P. Bažant. Two cementitious materials, one having a high water-cement ratio (w/c) and one having a low w/c, were prepared for the experiment. Intentionally, the test specimens were not protected from drying during the entire period of measurement. Test results confirmed that the actual shrinkage process as measured does not correspond with the prediction model, especially during its early age. Shrinkage during the plastic and semi-plastic stages of the solidification process is not reflected in the predicted shrinkage curve. However, if the start time of the evaluation of the experimental data corresponds to the time of maximum derivatives of the temperature, length changes, and ultrasonic pulse velocity curves, better correspondence between the experiment and prediction model is observed for material with a low w/c. However, this approach does not improve the correspondence between the experiment and numerical prediction in the case of material with a high w/c.

Název v anglickém jazyce

Numerical Analysis of Shrinkage Process Based on Experimental Data

Popis výsledku anglicky

This paper focuses on the comparison of experimentally obtained data with the shrinkage model B4 designed by a research group led by Professor Z. P. Bažant. Two cementitious materials, one having a high water-cement ratio (w/c) and one having a low w/c, were prepared for the experiment. Intentionally, the test specimens were not protected from drying during the entire period of measurement. Test results confirmed that the actual shrinkage process as measured does not correspond with the prediction model, especially during its early age. Shrinkage during the plastic and semi-plastic stages of the solidification process is not reflected in the predicted shrinkage curve. However, if the start time of the evaluation of the experimental data corresponds to the time of maximum derivatives of the temperature, length changes, and ultrasonic pulse velocity curves, better correspondence between the experiment and prediction model is observed for material with a low w/c. However, this approach does not improve the correspondence between the experiment and numerical prediction in the case of material with a high w/c.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-14302S" target="_blank" >GA17-14302S: Experimentální analýza objemových změn cementových kompozitů v raném stádiu tuhnutí</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

ACI MATERIALS JOURNAL

ISSN

0889-325X

e-ISSN

1944-737X

Svazek periodika

117

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

39-49

Kód UT WoS článku

000595347100004

EID výsledku v databázi Scopus

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