The Influence of Autogenous Shrinkage and Creep on the Risk of Early Age Cracking

Erik Schlangen; Minfei Liang; Branko Savija

doi:10.1007/978-3-031-07746-3_32

The Influence of Autogenous Shrinkage and Creep on the Risk of Early Age Cracking

Erik Schlangen^*, Minfei Liang, Branko Savija

^*Corresponding author for this work

Materials and Environment

Research output: Chapter in Book/Conference proceedings/Edited volume › Chapter › Scientific

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Abstract

The study aims to investigate the mechanism of early-age cracks in different massive concrete structures (i.e. tunnels, bridge foundations and underground parking garages), with the objective of answering the following three specific questions:

1) How does the parameters of concrete proportion mix (e.g. w/c ratio, cementitious materials, aggregates, etc.) influence the formation of autogenous shrinkage and creep, especially at early age with the focus on the first 24 h?
2)How to build theoretical and numerical model for the process of early-age crack formation and then quantify the damage status of concrete materials?
3)How to link the results derived from material scale to structural scale, and provide useful reference for practical engineering projects?

To study the basic mechanism a research program is performed in which different mixes are tested in a Temperature and Stress Testing Machine (TSTM). Furthermore autogenous shrinkage is measured in different ways. Modeling with a FEM-tool is used to predict the risk of early age cracking. The results indicate that the combined shrinkage (or expansion and the relaxation (or creep) during the first hours of hydration have a huge influence on the stresses that develop later and with that are important to determine the risk of cracking in massive concrete structures. Since investigating the stresses that built up in the first hours after casting in such a TSTM is rather difficult, we designed a new version of the TSTM machine in which dog bone specimens are tested vertically in a Universal Testing Machine (Instron).

Original language	English
Title of host publication	SSCS 2022
Subtitle of host publication	Numerical Modeling Strategies for Sustainable Concrete Structures
Editors	Pierre Rossi, Jean-Louis Tailhan
Publisher	Springer
Pages	327-334
Number of pages	8
DOIs	https://doi.org/10.1007/978-3-031-07746-3_32
Publication status	Published - 2022
Event	Numerical Modeling Strategies for Sustainable Concrete Structures - Marseille, France Duration: 4 Jul 2022 → 6 Jul 2022 https://sscs2022.sciencesconf.org/

Publication series

Name	RILEM Bookseries
Volume	38
ISSN (Print)	2211-0844
ISSN (Electronic)	2211-0852

Conference

Conference	Numerical Modeling Strategies for Sustainable Concrete Structures
Abbreviated title	SSCS 2022
Country/Territory	France
City	Marseille
Period	4/07/22 → 6/07/22
Internet address	https://sscs2022.sciencesconf.org/

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

Autogenous shrinkage
Concrete
Creep
Early age cracking

Access to Document

10.1007/978-3-031-07746-3_32

Erik-SSCS-RILEMFinal published version, 7.44 MB

Cite this

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title = "The Influence of Autogenous Shrinkage and Creep on the Risk of Early Age Cracking",

abstract = "The study aims to investigate the mechanism of early-age cracks in different massive concrete structures (i.e. tunnels, bridge foundations and underground parking garages), with the objective of answering the following three specific questions: 1) How does the parameters of concrete proportion mix (e.g. w/c ratio, cementitious materials, aggregates, etc.) influence the formation of autogenous shrinkage and creep, especially at early age with the focus on the first 24 h?2)How to build theoretical and numerical model for the process of early-age crack formation and then quantify the damage status of concrete materials?3)How to link the results derived from material scale to structural scale, and provide useful reference for practical engineering projects? To study the basic mechanism a research program is performed in which different mixes are tested in a Temperature and Stress Testing Machine (TSTM). Furthermore autogenous shrinkage is measured in different ways. Modeling with a FEM-tool is used to predict the risk of early age cracking. The results indicate that the combined shrinkage (or expansion and the relaxation (or creep) during the first hours of hydration have a huge influence on the stresses that develop later and with that are important to determine the risk of cracking in massive concrete structures. Since investigating the stresses that built up in the first hours after casting in such a TSTM is rather difficult, we designed a new version of the TSTM machine in which dog bone specimens are tested vertically in a Universal Testing Machine (Instron).",

keywords = "Autogenous shrinkage, Concrete, Creep, Early age cracking",

author = "Erik Schlangen and Minfei Liang and Branko Savija",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.; Numerical Modeling Strategies for Sustainable Concrete Structures, SSCS 2022 ; Conference date: 04-07-2022 Through 06-07-2022",

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doi = "10.1007/978-3-031-07746-3_32",

language = "English",

series = "RILEM Bookseries",

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Schlangen, E , Liang, M & Savija, B 2022, The Influence of Autogenous Shrinkage and Creep on the Risk of Early Age Cracking. in P Rossi & J-L Tailhan (eds), SSCS 2022: Numerical Modeling Strategies for Sustainable Concrete Structures. RILEM Bookseries, vol. 38, Springer, pp. 327-334, Numerical Modeling Strategies for Sustainable Concrete Structures, Marseille, France, 4/07/22. https://doi.org/10.1007/978-3-031-07746-3_32

The Influence of Autogenous Shrinkage and Creep on the Risk of Early Age Cracking. / Schlangen, Erik ; Liang, Minfei ; Savija, Branko.
SSCS 2022: Numerical Modeling Strategies for Sustainable Concrete Structures. ed. / Pierre Rossi; Jean-Louis Tailhan. Springer, 2022. p. 327-334 (RILEM Bookseries; Vol. 38).

Research output: Chapter in Book/Conference proceedings/Edited volume › Chapter › Scientific

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T1 - The Influence of Autogenous Shrinkage and Creep on the Risk of Early Age Cracking

AU - Schlangen, Erik

AU - Liang, Minfei

AU - Savija, Branko

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2022

Y1 - 2022

N2 - The study aims to investigate the mechanism of early-age cracks in different massive concrete structures (i.e. tunnels, bridge foundations and underground parking garages), with the objective of answering the following three specific questions: 1) How does the parameters of concrete proportion mix (e.g. w/c ratio, cementitious materials, aggregates, etc.) influence the formation of autogenous shrinkage and creep, especially at early age with the focus on the first 24 h?2)How to build theoretical and numerical model for the process of early-age crack formation and then quantify the damage status of concrete materials?3)How to link the results derived from material scale to structural scale, and provide useful reference for practical engineering projects? To study the basic mechanism a research program is performed in which different mixes are tested in a Temperature and Stress Testing Machine (TSTM). Furthermore autogenous shrinkage is measured in different ways. Modeling with a FEM-tool is used to predict the risk of early age cracking. The results indicate that the combined shrinkage (or expansion and the relaxation (or creep) during the first hours of hydration have a huge influence on the stresses that develop later and with that are important to determine the risk of cracking in massive concrete structures. Since investigating the stresses that built up in the first hours after casting in such a TSTM is rather difficult, we designed a new version of the TSTM machine in which dog bone specimens are tested vertically in a Universal Testing Machine (Instron).

AB - The study aims to investigate the mechanism of early-age cracks in different massive concrete structures (i.e. tunnels, bridge foundations and underground parking garages), with the objective of answering the following three specific questions: 1) How does the parameters of concrete proportion mix (e.g. w/c ratio, cementitious materials, aggregates, etc.) influence the formation of autogenous shrinkage and creep, especially at early age with the focus on the first 24 h?2)How to build theoretical and numerical model for the process of early-age crack formation and then quantify the damage status of concrete materials?3)How to link the results derived from material scale to structural scale, and provide useful reference for practical engineering projects? To study the basic mechanism a research program is performed in which different mixes are tested in a Temperature and Stress Testing Machine (TSTM). Furthermore autogenous shrinkage is measured in different ways. Modeling with a FEM-tool is used to predict the risk of early age cracking. The results indicate that the combined shrinkage (or expansion and the relaxation (or creep) during the first hours of hydration have a huge influence on the stresses that develop later and with that are important to determine the risk of cracking in massive concrete structures. Since investigating the stresses that built up in the first hours after casting in such a TSTM is rather difficult, we designed a new version of the TSTM machine in which dog bone specimens are tested vertically in a Universal Testing Machine (Instron).

KW - Autogenous shrinkage

KW - Concrete

KW - Creep

KW - Early age cracking

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ER -

The Influence of Autogenous Shrinkage and Creep on the Risk of Early Age Cracking

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Keywords

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