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Parametric Assessment of Stress Development and Cracking in Internally Cured Restrained Mortars Experiencing Autogenous Deformations and Thermal Loading
Joint Authors
Weiss, Jason
Schlitter, John
Bentz, Dale
Raoufi, Kambiz
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-08-29
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
A finite element model is used to examine how the properties of cementitious mortar are related to the stress development in the dual ring test.
The results of this investigation are used to explain the thermal cracking behavior of mixtures containing prewetted lightweight aggregates (LWA) by quantifying the contribution of several material properties individually.
In addition to the beneficial effects of using the LWA as an internal curing agent to reduce the autogenous shrinkage of concrete, the LWA also helps to reduce the potential for thermal cracking due to a lower elastic modulus and increased stress relaxation.
The rate of stress development, age of cracking, and magnitude of the temperature drop necessary to induce cracking in a dual ring specimen are dependent on a variety of factors, including the coefficient of thermal expansion of both the cementitious mortar and the restraining rings, elastic modulus of the mortar, creep effect of the mortar, and rate of thermal loading.
Depending on the rate of cooling, cracking may or may not occur.
The slowest rate of cooling (2.5∘C/h) minimizes the effects of creep while cooling rates faster than 8∘C/h can produce a thermal gradient through the mortar cross-section that needs to be considered.
American Psychological Association (APA)
Raoufi, Kambiz& Schlitter, John& Bentz, Dale& Weiss, Jason. 2011. Parametric Assessment of Stress Development and Cracking in Internally Cured Restrained Mortars Experiencing Autogenous Deformations and Thermal Loading. Advances in Civil Engineering،Vol. 2011, no. 2011, pp.1-16.
https://search.emarefa.net/detail/BIM-504883
Modern Language Association (MLA)
Raoufi, Kambiz…[et al.]. Parametric Assessment of Stress Development and Cracking in Internally Cured Restrained Mortars Experiencing Autogenous Deformations and Thermal Loading. Advances in Civil Engineering No. 2011 (2011), pp.1-16.
https://search.emarefa.net/detail/BIM-504883
American Medical Association (AMA)
Raoufi, Kambiz& Schlitter, John& Bentz, Dale& Weiss, Jason. Parametric Assessment of Stress Development and Cracking in Internally Cured Restrained Mortars Experiencing Autogenous Deformations and Thermal Loading. Advances in Civil Engineering. 2011. Vol. 2011, no. 2011, pp.1-16.
https://search.emarefa.net/detail/BIM-504883
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-504883