Brittleness of Reinforced Concrete Structures under Arctic Conditions

The behavior of reinforced and unreinforced concrete beams was studied under impact loading at low temperatures, and the results were compared to the behavior of reinforcing steel (rebar) in Charpy-V impact tests. Transition temperatures as low as -30 C were obtained for the rebars in the Charpy-V t...

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Bibliographic Details
Main Authors: Kivekaes,Lauri, Korhonen,Charles J
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1986
Subjects:
Ceramics
Refractories and Glass
Structural Engineering and Building Technology
Solid State Physics
*BEAMS(STRUCTURAL)
*REINFORCED CONCRETE
LOW TEMPERATURE
BRITTLENESS
CHARPY IMPACT TESTS
ARCTIC REGIONS
Concrete structures
PE62730A
WU017
AST42
Arctic
Online Access:http://www.dtic.mil/docs/citations/ADA170792
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA170792
Description
Summary:The behavior of reinforced and unreinforced concrete beams was studied under impact loading at low temperatures, and the results were compared to the behavior of reinforcing steel (rebar) in Charpy-V impact tests. Transition temperatures as low as -30 C were obtained for the rebars in the Charpy-V tests, whereas no brittle failures occurred in the rebars in the reinforced concrete beams at temperatures as low as -63 C, even in beams where the rebars were intentionally notched. The impact strength of unreinforced concrete increases considerably at lower temperatures, thus reducing cracking of reinforced concrete structures and significantly increasing the safety of lightly reinforced structures. (Author)

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