Development of high performance and high strength heavy concrete for radiation shielding structures

Abstract

Heavy concrete currently used for construction contains special materials that are expensive and difficult to work with. This study replaced natural aggregate (stones) in concrete with round steel balls, which are inexpensive and easily obtainable. The diameters of the steel balls were 0.5 and 1 cm, and their density was 7.8 kg/m³. Dense packing mixture methods were used to produce heavy concrete with densities of 3500 and 5000 kg/m³. The various properties of this concrete were tested according to the standards of the American Society for Testing and Materials (ASTM). The results indicated that the construction slump of the concrete could reach 260–280 mm and its slump flow could reach 610–710 mm. More important, its compressive strength could reach 8848 MPa. These results will significantly alter traditional construction methods that use heavy concrete and enhance innovative ideas for structural design.

Keywords

radiation shielding / composite structures / concretes / concrete construction / materials properties

References

[1] Kan Y.C., Pei K.C., Changa C.L. Strength and fracture toughness of heavy concrete with various iron aggregate in clusions. Nucl. Eng. Des., 2004, 228, 119.

[2] Huang J.L. Concrete Property and Behavior, 2007 Taipei, Chan’s Arch-Publishing Co. Ltd.

[3] Peng Y.C., Huang C.L. The concrete dense packing mode and engineering properties of aggregate concrete with different densities. J. Univ. Sci. Technol. Beijing, 2010, 32(3): 366.

[4] Lin D.J. ROC Concrete Technology 21st Century Development Program, 2006 Taipei, Building Research Institute

[5] Khan M.I., Al-Abdul Wahhab H.I. Improving slurry seal performance in Eastern Saudi Arabia using steel slag. Constr. Build. Mater., 1998, 12, 195.

[6] Kan Y.C., Pei K.C., Chang C.L. Strength and fracture toughness of heavy concrete with various iron aggregate inclusions. Nucl. Eng. Des., 2004, 228, 119.

[7] ACI Committee 221, Standard Practice for Selecting Proportions for Structural Lightweight Concrete, American Concrete Institute, 1981.

[8] Sakr K., EL-Hakim E. Effect of high temperature or fire on heavy weight concrete properties. Cem. Concr. Res., 2005, 35, 590.

[9] Guo J.Q., Lei Z.X., Chen P.L., Zhou T.H. Experimental study on ductility and bearing capacity of concrete frame columns with central reinforcement under high axial compression ratio. J. Build. Struct., 2008, 29, 89.

[10] Popovics S., Ujhelyi J. Contribution to the concrete strength versus water-cement ratio relationship. J. Mater. Civ. Eng., 2008, 20, 459.

[11] Vu X.H., Malecot Y., Daudeville L., Buzaud E. Experimental analysis of concrete behavior under high confinement: Effect of the saturation ratio. Int. J. Solids Struct., 2009, 46, 1105.

[12] Bai J., Wild S., Sabir B.B., Kinuthia J.M. Workability of concrete incorporating pulverized fuel ash and metakaolin. Mag. Concr. Res., 1999, 51, 207.

[13] J. Golaszewski, J. Szwabowski, P. Soltysik, Influence of air entraining agents on workability of fresh high performance concrete, [in] Proceedings of the International Conference on Admixtures-Enhancing Concrete Performance, Taipei, 2005, p.171.

[14] Li Q.Y., Wang Z.W., Yang Y.Z. Evaluation methods of workability of lightweight aggregate concrete. J. Harbin Inst. Technol., 2005, 37(Suppl.1): 253.

[15] Punkki J., Golaszewski J., Gjorv O.E. Workability loss of high-strength concrete. ACI Mater. J., 1996, 93, 427.

[16] Sawamoto T., Tsuji M. Technique to produce recycled aggregate concrete with crushed concrete waste. J. Soc. Mater. Sci. Jpn., 2000, 49, 1079.

[17] Jamkar S.S., Rao C.B.K. Index of aggregate particle shape and texture of coarse aggregate as a parameter for concrete mix proportioning. Cem. Concr. Res., 2004, 34, 2021.

[18] Hueste M.B.D., Chompreda P., Trejo D., et al. Mechanical properties of high-strength concrete for prestressed members. ACI Struct. J., 2004, 101, 457.

[19] Choi K.K., Sherif A.G., Reda Taha M.M., Chung L. Shear strength of slender reinforced concrete beams without web reinforcement: a model using fuzzy set theory. Eng. Struct., 2009, 31, 768.

[20] Kan Y.C., Pei K.C., Chang C.L. Strength and fracture toughness of heavy concrete with various iron aggregate inclusions. Nucl. Eng. Des., 2004, 228, 119.

[21] Peng Y.C., Huang C.L. Engineering properties of sintered waste sludge as lightweight aggregate in a densified concrete mixture. J. Chongqing Univ. Engl. Ed., 2009, 8, 231.