NDLI: A new method of applying long-term multiaxial stresses in concrete specimens undergoing ASR, and their triaxial expansions

Content Provider	Springer Nature Link
Author	Gautam, Bishnu P. Panesar, Daman K.
Copyright Year	2015
Abstract	An understanding of the response of multiaxially loaded concrete to the expansive reactions, such as alkali-silica reaction (ASR), remains a prerequisite to predict the long-term behavior of ASR-affected concrete structures, such as dams and containment structures. However, no suitable techniques exist to apply biaxial and triaxial stresses in concrete specimens, and to sustain the stresses for monitoring the long-term behavior of concrete. Consequently, state-of-the-art numerical modeling of concrete structures undergoing ASR relies on the experimental findings obtained from specimens with insufficient restraints. This paper presents the development of a new method to apply multiaxial (uniaxial, biaxial and triaxial) stresses. The stresses were applied to multiple concrete cube specimens, and were sustained for 1 year as ASR evolved in the specimens subjected to an accelerated condition of 50 °C temperature and close to 100 % relative humidity. The specimens were measured for longitudinal expansion in the three directions. The merit of the proposed method in the study of ASR is illustrated by presenting the results on the triaxial expansions of several unloaded and multiaxially loaded cube specimens until the exhaustion of the reaction. The results demonstrate a strong influence of multiaxial stress states on the ASR expansion of concrete.
Starting Page	3495
Ending Page	3508
Page Count	14
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	49
Issue Number	9
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-10-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Concrete Alkali-silica reaction (ASR) Expansion Multiaxial stresses High-strength bolts Structural Mechanics Materials Science Theoretical and Applied Mechanics Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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