有哪些信誉好的足球投注网站Behavior of high water-cement ratio concrete under biaxial compression after freeze-thaw cycles.pdf
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Behavior of high water-cement ratio concrete under biaxial compression after freeze-thaw cycles
Journal of Wuhan University of Technology-Mater. Sci. Ed. Aug 2008 589
Behavior of High Water-cement Ratio Concrete under
Biaxial Compression after Freeze-thaw Cycles
SHANG Huaishuai1,2, SONG Yupu3, OU Jinping3
(1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;
2. Shandong Provincial Academy of Building Research, Jinan 250031, China; 3. State Key Laboratory of Coastal and Offshore
Engineering, Dalian University of Technology, Dalian 116024, China)
Abstract: The high water-cement ratio concrete specimens under biaxial compression that completed in
a triaxial testing machine were experimentally studied. Strength and deformations of plain concrete specimens
in two loading direction under biaxial compression with stress ratio of α=0, 0.25, 0.5, 0.75, 1.0 were obtained
after 0, 25, 50 cycles of freeze-thaw. Infl uences of freeze-thaw cycles and stress ratio on the peak stress and
deformation of this point were analyzed according to the experimental results. Based on the test data, the failure
criterion expressed in terms of principal stress after different cycles of freeze-thaw, and the failure criterion with
consideration of the infl uence of freeze-thaw cycle and stress ratio were proposed respectively.
Key words: concrete; freeze-thaw cycles; stress ratio; strength criteria
DOI 10.1007/s11595-006-4589-6
1 Introduction
One of the durability[1-3] properties concerned
in many countries is freeze-thaw resistance. As more
and more concrete structures are being built in a
wet environment, such as in the bridge piers, marine
structures, hydraulic structures and offshore platforms,
etc. Freeze-thaw cycles[4-7] has posed a serious problem
in concrete structures. It has been a significant,
scientifi c and technical problem to improve the freeze-
thaw resistance and to prolong the service life of
concrete.
Multiaxial states of stress are present in many
places of structure
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