Testing System for Mechanical Behaviors Analysis and Cracking Resistance of Concrete at Early Age

Abstract:

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A uniaxial experimental set-up was developed to evaluate the self-induced stresses, visco-elastic strains and cracking potential of concrete from the time of its placement. The totally restrained condition is achieved by keeping the length change within a threshold of 3μm. The temperature rise of the specimens can be controlled within 1.5, by which the deformation because of temperature change due to cement hydration could be prevented. The tensile force required to compensate the shrinkage could be monitored and elastic strain and tensile creep can be calibrated without an obvious interference of temperature deformation. The preliminary results testified the workability of the system.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

157-160

DOI:

10.4028/www.scientific.net/KEM.324-325.157

Citation:

X. W. Ma et al., "Testing System for Mechanical Behaviors Analysis and Cracking Resistance of Concrete at Early Age ", Key Engineering Materials, Vols. 324-325, pp. 157-160, 2006

Online since:

November 2006

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Price:

$35.00

[1] K. Kovler, S. Igarashi, A. Bentur. Tensile creep behavior of high strength concrete at early ages. Materials and Structures, 1999, 32: 383-387.

DOI: 10.1007/bf02479631

[2] B. Bissonnette, M. Pigeon. Tensile creep at early ages of ordinary, silica fume and fiber reinforced concretes. Cement and Concrete Research, 1995, 25(5): 1075-1085.

DOI: 10.1016/0008-8846(95)00102-i

[3] A. M. Paillere, M. Buil, J. J. Serrano. Effect of fiber addition on the autogenous shrinkage of silica fume concrete. ACI Materials Journal, 1989, 86 (2): 139-144.

DOI: 10.14359/2295

[4] R. Bloom, A. Bentur. Free and restrained shrinkage of normal and high-strength concrete. ACI Materials Journal, 1995, 92 (2): 211-217.

[5] K. Kovler, Testing system for determining the mechanical behavior of early age concrete under restrained and free uniaxial shrinkage. Materials and Structures, 1994, 27: 324-330.

DOI: 10.1007/bf02473424

[6] M. Pigeon, G. Toma, A. Delagrave, B. Bissonnette, J. Marchand, J. C. Prince. Equipment for the analysis of the behavior of concrete under restrained shrinkage at early ages. Magazine of Concrete Research, 2000, 52 (4): 297-302.

DOI: 10.1680/macr.2000.52.4.297

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