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http://dx.doi.org/10.4334/JKCI.2004.16.3.375

Effect of Specimen Sizes and Shapes on Compressive Strength of Concrete  

Yang Eun-Ik (Dept. of Civil Engineering, Kangnung National University)
Choi Joong-Cheol (Dept. of Structure, Dongsung Engineering Co., Ltd.)
Yi Seong-Tae (Dept. of Civil Engineering, Chung Cheong College)
Publication Information
Journal of the Korea Concrete Institute / v.16, no.3, 2004 , pp. 375-382 More about this Journal
Abstract
The compressive strength of concrete is used as the most basic and important material Property when reinforced concrete structures are designed. It has become a problem to use this value, however, because the control specimen sizes and shapes are different from every country. In this study, the effect of specimen sizes and shapes on compressive strength of concrete specimens was experimentally investigated based on fracture mechanics. Experiments for the Mode I failure was carried out by using cylinder, cube, and prism specimens. The test results are curve fitted using least square method(LSM) to obtain the new parameters for the modified size effect law(MSEL). The analysis results show that the effect of specimen sizes and shapes on ultimate strength is apparent. In addition, correlations between compressive strengths with size, shape, and casting direction of the specimen are investigated. For cubes and prisms the effect of placing direction on the compressive strength was investigated.
Keywords
compressive strength; size effect; shape effect; casting direction;
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  • Reference
1 Kim, J.K., Yi, S.T., and Kim, J.J.H., 'Effect of Specimen Sizes on Flexural Compressive Strength of Concrete,' ACI Structural Journal, May-Jun. 2001,pp.416-424
2 Chin M.S., Mansur M.A. and Wee T.H., 'Effects of Shape, Size, and Casting Direcdon of Specimens on Stress-Strain Curves of High-Strength Concrete,' ACI Materials Journal, Vo1.94, No.3, May-Jun. 1997, pp.209-219
3 Gonnerman, H.F., 'Effect of Size and Shape of Test Specimen on Compressive Strength of Concrete, 'ASTM, Proc, Vol.25, 1925, pp.237-250
4 British Standards Institution, 'BS 1881: Method for Determination of the Compressive Strength of Cores,' Part 120, BSI, London, 1983
5 CEB-FIP Model Code 1990, 'Comite Euro-International du Beton(CEB),' Bulletin D'lnformation No. 203/205, Lausanne, 1993, 437pp
6 Murdock, J.W. and Kesler, C.E., 'Effect of Length to Diameter Ratio qf Specimen on the Apparent Compressive Strength of Concrete,' ASTM Bulletin, No.221, 1957, pp.68-73
7 American Society for Testing and Materials, 'Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete,' Annual Book of ASTM Standards, (ASTM C 42-94), 1995, Section 4, American Society for Testing and Materials, Philadelphia, pp.24-27
8 Bazant, Z.P., 'Size Effect in Blunt Fracture; Concrete, Rock, Rock, Metal,' Journal Of Engineering Mechanics, ASCE, Vol.110, No.4, Apr. 1984, pp.518-535   DOI   ScienceOn
9 Kim, J.K. and Eo, S.H., 'Size Effect in Concrete Specimens with Dissimilar Initial Cracks,' Magazine of Concrete Research, Vol.42, No.153, Dec. 1990, pp.233-238   DOI
10 Kim, J.K., Yi, S.T., Park, C.K., and Eo, S.H., 'Size Effect on Compressive Strength of Plain and Spirally Reinforced Concrete Cylinders,' ACI Structural Journal, Vol.96, No.1, Jan.-Feb. 1999, pp.88-94
11 Kim, J.K., Yi, S.T., and Yang, E.I., 'Size Effect on Flexural Compressive Strength of Concrete Specimens,' ACI Structural Journal, Vol.97, No.2, Mar.-Apr. 2000, pp.291-296