Abstract

In this study, concrete specimens, having different shapes and sizes have been studied for two different strength levels cured in air and in water. Compressive strength test was performed on cubic and cylindrical samples, having various sizes. The analyses of this investigation were focused on conversion factors for compressive strengths of different samples. Conversion factors of different specimens against cross sectional area of the same specimens were also plotted and regression analyses were done. It was found that according to the results of analyses, the best fit curves, tend to have different trends at different curing conditions.

Keywords:

Compressive strength, concrete, curing, mechanical properties, modeling,

References

1. ASTM C39/C39M, 2011. Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.
   Direct Link
2. Bažant, Z.P. and J. Planas, 1998. Fracture and Size Effect in Concrete and Other Quasibrittle Materials. CRC Press, Boca Raton and London, Vol. 16.
   
3. British Standards Institution, 1983. Testing Concrete. Methods for Determination of Density of Hardened Concrete. BS 1881: Part 114, BSI, London.
   
4. British Standards Institution, 1986. Methods for Mixing and Sampling Fresh Concrete in the Laboratory. BS 1881: Part 125:1986, BSI, London.
   
5. BS EN 12350-2:2009, 2009. Testing Fresh Concrete. Slump-test.
   Direct Link
6. BS EN 12390-3:2009, 2009. Compressive Strength of Test Specimens. British Standards Institution, London.
   
7. Del Viso, J., J. Carmona and G. Ruiz, 2008. Shape and size effects on the compressive strength of high-strength concrete. Cement Concrete Res., 38(3): 386-395.
   CrossRef    
8. Elwet, D.J. and G. Fu, 1995. Compression Testing of Concrete: Cylinders vs. Cubes. Transportation Research and Development Bureau, New York State Department of Transportation, Albany.
   
9. Gonnerman, H.F., 1925. Effect of size and shape of test specimen on compressive strength of concrete. Proc. ASTM, 25: 237-250.
   
10. Malaikah, A.S., 2009. Effect of specimen size and shape on the compressive strength of high strength concrete. Pertanika J. Sci. Technol., 13(1): 87-96.
    
11. Neville, A.M., 2002. Properties of Concrete 4/E. John Wiley and Sons, NY.
    
12. Plowman, J., W. Smith and T. Sheriff, 1974. Cores, cubes and the specific strength of concrete. Struct. Eng., 52(11): 421-426.
    
13. Teychenné, F.E., 1997. Design of Normal Concrete Mixes. Construction Research Communications Ltd., Garston, Watford.
    
14. Tokyay, M. and M. Ozdemir, 1997. Specimen shape and size effect on the compressive strength of higher strength concrete. Cement Concrete Res., 27(8): 1281-1288.
    CrossRef    
15. Zheng, J.J. and C.Q. Li, 2002. Three-dimensional aggregate density in concrete with wall effect. ACI Mater. J., 99(6): 568-575.
    

Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.