Size Effect Tests of High Strength Concrete
Publication: Journal of Materials in Civil Engineering
Volume 9, Issue 1
Abstract
Results of failure of cylinders under the uniaxial compression are reported. Cylinders of three different diameters (37.5, 75, and 150 mm) were tested. For all the cylinders, the height to diameter ratio was h/d= 2. The cylinders were made of microconcrete with maximum aggregate size 4.76 mm and the compressive strength () of concrete was found between 34 and 48 MPa depending on the size of specimens. The concrete mix proportions of water:cement:aggregate:silica fume:superplasticizer were 0.3:1:4:0.1:0.08. The results reveal the existence of a significant size effect that can be approximately described by the size effect law previously proposed by Bažant. The experiments indicate that larger specimens tend to fail in a more brittle manner, while smaller specimens tend to fail in a less brittle or more plastic failure.
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References
1.
Bažant, Z. P.(1984). “Size effect in blunt fracture: concrete, rock, metal.”J. Engrg. Mech., ASCE, 110(4), 518–535.
2.
Bažant, Z. P., Kim, J. K., and Şener, S.(1985). “Discussion of `Size effect in shear failure longitudinally reinforced beams,' by Z. P. Bažant and J. K. Kim.”ACI J., 82(4), 579–583.
3.
Bažant, Z. P., and Şener, S. (1987a). “Tests of size effect in pull-out of reinforcing bars from concrete.”Computational mechanics of concrete structures—advances and applications, Proc., IABSE Colloquium, Int. Assn. for Bridge and Struct. Engrg., Zürich, Switzerland, 139–142.
4.
Bažant, Z. P., and Şener, S.(1987b). “Size effect in torsional failure of concrete beams.”J. Struct. Engrg., ASCE, 113(10), 2125–2136.
5.
Bažant, Z. P., and Şener, S.(1988a). “Size effect in pullout tests.”ACI Mat. J., 85(5), 347–351.
6.
Bažant, Z. P., Şener, S., and Prat, C. P.(1988b). “Size effect tests of torsional failure of plain and reinforced concrete beams.”Mat. and Struct., Paris, France, 21(126), 425–430.
7.
Bažant, Z. P., Şener, S., and Prat, C. P. (1989). “Fracture mechanics size effect and ultimate load of beams under torsion.”Fracture Mech.: Applications to Concrete, SP-118, V. C. Li and Z. P. Bažant, eds., Am. Concrete Inst., Detroit, Mich., 171–178.
8.
“Building code requirements for reinforced concrete.” (1992). ACI 318-89, Concrete Inst., Detroit, Mich.
9.
RILEM Draft Recommendation.(1990). “Size effect method for determining fracture energy and process zone of concrete.”Mat. and Struct., Paris, France, 23(138), 461–465.
10.
Şener, S. (1992). “Size effect in bond splices tests.”Proc., FIP'92 Symp., G. Tassi, ed., Hungarian Sci. Soc. of Build., Budapest, Hungary, 357–362.
11.
Şener, S. (1993). “Size effect in the direct loading tests.”Proc., Adv. in Civ. Engrg., 1st Tech. Congr., Middle East Tech. Univ., Ankara, Turkey, 720–727.
12.
Şener, S. (1994a). “Bond splices tests based on fracture mechanics.”Proc., Int. Symp. Brittle Matrix Composites 4, A. M. Brandt, V. C. Li, and I. H. Marshall, eds., Ike and Woodhead, Warsaw, 569–576.
13.
Şener, S. (1994b). “Size effect in failure of splices of reinforcing bars in concrete.”Bull. Tech. Univ. of Istanbul, Istanbul, Turkey, 47(4), 337– 355.
14.
Şener, S. (1995). “Fracture mechanics of high strength concrete.”Proc., Symp. Prof. Turgan Sabis, Istanbul Tech. Univ., Istanbul, Turkey, 209– 219 (in Turkish).
15.
Şener, S., and Timur, I. (1993). “Size effect in bond splices tests under the indirect loading.”Proc., Adv. in Civ. Engrg., 1st Tech. Congr., Middle East Tech. Univ., Ankara, Turkey, 728–735.
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Published In
Journal of Materials in Civil Engineering
Volume 9 • Issue 1 • February 1997
Pages: 46 - 48
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Feb 1, 1997
Published in print: Feb 1997
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