Abstract
The paper presents the results of creep tests conducted at temperatures ranging from 20 to 70 °C at 65% RH on concrete samples preconditioned at several environmental relative humidities. During the conditioning of the samples as well as during the execution of the creep tests, miniaturized humidity sensors were employed to measure the relative humidity in the concrete pores. The measured creep and shrinkage deformations are the higher, the higher the initial moisture content of the samples, and additionally, the higher the rate at which concrete losses moisture due to a dry ambient environment. The rate of change of the mean relative humidity of the samples was found to scale in a unique manner the rate of drying shrinkage, independent of the moisture content. Based on the mean relative humidity measured in the concrete samples, simple mathematical formulations to predict basic and drying creep are proposed. Assuming that basic creep is influenced by the moisture content, the evaluation of the model suggests that drying creep, drying shrinkage and mean relative humidity follow the same kinetics.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Acosta, F.: Influence of elevated temperatures up to 100 °C on the mechanical properties of concrete. Ph.D. thesis, Karlsruhe Institute of Technology (KIT) (2017, to be published)
Eurocode 2: EN 1992-2: Design of structures – Concrete bridges – Design and detailing rules (2005)
fib (International Federation for Structural Concrete): Model Code for Concrete Structures. Ernst & Sohn, Berlin (2013)
Hansen, T.C., Mattock, A.H.: Influence of size and shape of member on the shrinkage and creep of concrete. J. Proc. ACI 63(2), 267–290 (1966)
Mitzel, A., Klapoc, M.: On the superposition of shrinkage and creep deformations. Build. Sci. 2(3), 267–271 (1967)
Müller, H.S., Küttner, C.H., Kvitsel, V.: Creep and shrinkage models for normal and high performance concrete – a unified code-type approach. In: Special Issue of RFGL – ACI Workshop, Paris, France (1999)
Müller, H.S., Kvitsel, V.: Kriechen und Schwinden von Beton – Grundlage der neuen DIN 1045 und Ansätze für die Praxis. Beton und Stahlbetonbau 91(1), 8–19 (2002)
Troxell, G., Raphael, J., Davis, R.: Long-time creep ans shrinkage tests of plain and reinforced concrete. ASTM Proc. 58, 1101–1120 (1958)
Acknowledgements
The presented research was financially supported by the Federal Ministry of Education and Research of Germany (BMBF) within the program Research for Civil Security. Project AURIS, No. 13N11743.
Author information
Authors and Affiliations
Corresponding authors
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG
About this paper
Cite this paper
Acosta, F., Müller, H.S. (2018). Kinetics of Drying Shrinkage and Creep: An Experimentally Based Code-Type Approach. In: Hordijk, D., Luković, M. (eds) High Tech Concrete: Where Technology and Engineering Meet. Springer, Cham. https://doi.org/10.1007/978-3-319-59471-2_4
Download citation
DOI: https://doi.org/10.1007/978-3-319-59471-2_4
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-59470-5
Online ISBN: 978-3-319-59471-2
eBook Packages: EngineeringEngineering (R0)