SIZE EFFECT ON THE ULTIMATE DRYING SHRINKAGE OF CONCRETE – MODELING WITH MICROPRESTRESS SOLIDIFICATION THEORY

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00346106" target="_blank" >RIV/68407700:21110/20:00346106 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.21495/5896-3-122" target="_blank" >https://doi.org/10.21495/5896-3-122</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21495/5896-3-122" target="_blank" >10.21495/5896-3-122</a>

Jazyk výsledku

angličtina

Název v původním jazyce

SIZE EFFECT ON THE ULTIMATE DRYING SHRINKAGE OF CONCRETE – MODELING WITH MICROPRESTRESS SOLIDIFICATION THEORY

Popis výsledku v původním jazyce

Drying shrinkage of concrete is a distinctively long-term process which is affected by many factors ranging from concrete composition, curing and ambient conditions to the dimensions and shape of the investigated structural member. In the case of standard-size structural members the ultimate value of drying shrinkage is reached within several decades, which hampers the experimental verification. In a reasonable time scope (e.g. 1 year) even the standard laboratory-size specimens provide only the initial evolution of shrinkage which cannot be extrapolated owing to the ill-posed nature of the problem. Furthermore, the experimental data indicate that there is a non-negligible size effect on the ultimate drying shrinkage which makes the transition from laboratory to structural size even more difficult. The objective of the current research is to assess this size effect from the perspective of the experimental data found in the literature, the design codes and prediction models for the long-term behavior of concrete, and finally, the coupled FEM simulations with the advanced constitutive model based on the Microprestress-Solidification theory.

Název v anglickém jazyce

SIZE EFFECT ON THE ULTIMATE DRYING SHRINKAGE OF CONCRETE – MODELING WITH MICROPRESTRESS SOLIDIFICATION THEORY

Popis výsledku anglicky

Drying shrinkage of concrete is a distinctively long-term process which is affected by many factors ranging from concrete composition, curing and ambient conditions to the dimensions and shape of the investigated structural member. In the case of standard-size structural members the ultimate value of drying shrinkage is reached within several decades, which hampers the experimental verification. In a reasonable time scope (e.g. 1 year) even the standard laboratory-size specimens provide only the initial evolution of shrinkage which cannot be extrapolated owing to the ill-posed nature of the problem. Furthermore, the experimental data indicate that there is a non-negligible size effect on the ultimate drying shrinkage which makes the transition from laboratory to structural size even more difficult. The objective of the current research is to assess this size effect from the perspective of the experimental data found in the literature, the design codes and prediction models for the long-term behavior of concrete, and finally, the coupled FEM simulations with the advanced constitutive model based on the Microprestress-Solidification theory.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA19-20666S" target="_blank" >GA19-20666S: Smrštěním vyvozené deformace a mikrotrhliny v konstrukčním betonu - monitoring, modelování a identifikace</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 statě ve sborníku

Engineering Mechanics 2020: Book of full texts

ISBN

978-80-214-5896-3

ISSN

1805-8248

e-ISSN

—

Počet stran výsledku

4

Strana od-do

122-125

Název nakladatele

Institute of Thermomechanics, AS CR, v.v.i.

Místo vydání

Prague

Místo konání akce

Brno

Datum konání akce

24. 11. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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