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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.8 P.1296~1304

10.1631/jzus.2006.A1296


Experimental study on complete stress-deformation curves of larger-size concrete specimens subjected to uniaxial tension


Author(s):  CHEN Ping, LIANG Zheng-ping, HUANG Shu-qin, CHEN Yu-quan

Affiliation(s):  Department of Civil Engineering, Zhejiang Sci-tech University, Hangzhou 310018, China; more

Corresponding email(s):   zhanchen9608@sina.com

Key Words:  Concrete, Uniaxial tensile tests, Tensile stress, Deformation, Large-size specimens


CHEN Ping, LIANG Zheng-ping, HUANG Shu-qin, CHEN Yu-quan. Experimental study on complete stress-deformation curves of larger-size concrete specimens subjected to uniaxial tension[J]. Journal of Zhejiang University Science A, 2006, 7(8): 1296~1304.

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author="CHEN Ping, LIANG Zheng-ping, HUANG Shu-qin, CHEN Yu-quan",
journal="Journal of Zhejiang University Science A",
volume="7",
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pages="1296~1304",
year="2006",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.A1296"
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%0 Journal Article
%T Experimental study on complete stress-deformation curves of larger-size concrete specimens subjected to uniaxial tension
%A CHEN Ping
%A LIANG Zheng-ping
%A HUANG Shu-qin
%A CHEN Yu-quan
%J Journal of Zhejiang University SCIENCE A
%V 7
%N 8
%P 1296~1304
%@ 1673-565X
%D 2006
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.A1296

TY - JOUR
T1 - Experimental study on complete stress-deformation curves of larger-size concrete specimens subjected to uniaxial tension
A1 - CHEN Ping
A1 - LIANG Zheng-ping
A1 - HUANG Shu-qin
A1 - CHEN Yu-quan
J0 - Journal of Zhejiang University Science A
VL - 7
IS - 8
SP - 1296
EP - 1304
%@ 1673-565X
Y1 - 2006
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2006.A1296


Abstract: 
In order to provide parameters for numerical analyses of the huge Three-Gorge concrete dam (2309 m long by 175 m height), complete tensile stress-deformation curves for large-size plain concrete specimens were measured and studied by performing uniaxial tensile tests on large-size unnotched specimens (250 mm×250 mm×1400 mm). The specimens were prepared with the three-graded-aggregate materials provided by the client of the Three-Gorge project. To prevent a failure occurring near the ends of the unnotched specimens, both the ends of each specimen (450 mm in length) were cast using a higher-strength concrete than the middle part (i.e., active part). Tensile tests were completed on a specially-designed tensile testing machine, which can be easily re-assembled to accommodate different-size specimens. To make the specimens fail stably, a cyclic loading scheme was adopted after the peak strength was reached. Four of five tests in this study were successful, and four complete tensile stress-deformation curves were obtained. It was found that the post-peak curve of the large-size specimens used in this study is more gradual than those for the small-size specimens reported in the literature.

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Reference

[1] Carpinteri, A., Ingraffea, A.R., 1988. Fracture Mechanics of Concrete-Material Properties and Testing. Translated by Yang, Y.H. et al., Hunan University Press (in Chinese).

[2] Chen, P., 1999. Experimental Study on the Complete Tensile Stress-Deformation Curve for Large-Size Concrete Specimens. MS Thesis, Hohai University, Nanjing, China, p.10-11 (in Chinese).

[3] Cornelissen, H.A.W., Hordijk, D.A., Reinhardt, H.W., 1985. Experiments and Theory for the Application of Fracture Mechanics to Normal and Lightweight Concrete. In: Fracture Toughness and Fracture Energy of Concrete. Elsevier Science Publishers B.V., the Netherlands, p.565-575.

[4] Evans, R.H., Marathe, M.S., 1968. Microcracking and stress-strain curves for concrete in tension. Materials and Structures Research and Testing, 1:61-64.

[5] Gopalaratnam, V.S., Shah, S.P., 1985. Softening response of plain concrete in direct tension. ACI Journal, 82:311-323.

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[7] Hordijk, D.A., Reinhardt, H.W., Cornelissen, H.A.W., 1987. Fracture Mechanics Parameters of Concrete from Uniaxial Tensile Tests as Influenced by Specimen Length. SEM/RILEM International Conference on Fracture of Concrete and Rock. Houston, Texas, p.138-149.

[8] Li, Z., Kulkarni, S.M., Shah, S.P., 1993. New test method for obtaining softening response of unnotched concrete specimen under uniaxial tension. Experimental Mechanics, 33(3):181-188.

[9] van Mier, J.G.M., Shi, C., 2002. Stability issues in uniaxial tensile tests on brittle disordered materials. International Journal of Solids and Structures, 39(13-14):3359-3372.

[10] Yankelevsky, D.Z., Reinhardt, G.W., 1987. Response of the plain concrete to cyclic tension. ACI Materials Journal, 84:365-373.

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