Mechanical properties and compression sensibility of ironstone aggregate concrete

Abstract

Radiation-shielding concrete was made with ironstone aggregate. The compressive strength is affected by multi factors. The electrical conductive properties and smart performance was discovered and investigated. Experimental results show that concrete conductivity rapidly declines with increasing loading, and the conductivity is much lower than the initial value of conductive aggregate of concrete, which may be related to special characters of ironstone. This kind of concrete has widely potential applications due to its special characters and low cost.

Keywords

ironstone / concrete / alert performance / electrical conductive property

References

[1] Shui Z., Sroeven P. Electrical Conductive Behaviour of Cementitious Composites with Low Content of Hybrid Steel-carbon Fibre Systems[J]. Journal of Wuhan Uinversity of Technology, 1998, 13(1): 18-23.

[2] Chung D. D. L. Cement-matrix Composites for Smart Structures[J]. Smart Material and Structure, 2000, 9(3): 389-401.

[3] Fu X., Chung D. D. L. Submicron Carbon Filament Cement Matrix Composites for Electromagnetic Interference Shielding[J]. Cem Concr Res, 1996, 26(10): 1 467-1 472.

[4] Shi Z., Chung D. D. L. Concrete for Magnetic Shielding[J]. Cem. Concr. Res, 1995, 5: 939-944.

[5] Chen Puwei, Chung D D L. Carbon Fiber Reinforced Concrete as an Intrinsically Smart Concrete for Damage Assessment during Dynamic Loading[C]. Symposium on Materials for Smart Systems. 1995: 317–322

[6] Wu S., Mo L., Shui Z. An Improvement in Electrical Properties of Asphalt Concrete[J]. Journal of Wuhan Uinversity of Technology, 2002, 17(4): 69-72.

[7] Guan X.-c., Ou J.-p., Han B.-g., . State of Art of Carbon Fiber Reinforced Concrete[J]. Journal of Harbin University of C.E. & Architecture, 2002, 35(6): 55-59.

[8] Yang Bo-ke. New Practical Technique Handbook in Concrete[M]. Jilin Science Press (in Chinese), 1998: 460

[9] Li Liquan. Design Handbook in Proportioning of Concrete (The 3rd edition)[M]. South China University of Technology Press, (in Chinese), 2002: 69

[10] Su N., Wu Y.-H. Effect of Magnetic Water on the Engineering Properties of Concrete Containing Granulated Blast-furnace slag[J]. Cement and Concrete Research, 2000, 30(4): 599-605.

[11] Zhen Mei, D D L Chung. Effects of Temperature and Stress on the Interface between Concrete and its Carbon Fiber Epoxy-matrix Composite Retrofit Studied by Electrical Resistance Measurement[J]. Cem. Concr. Res. 2000, (30): 799–802

[12] Sun M., Chen P. Study on Volume Resistance and Surface Resistance of CFRC[J]. Journal of Wuhan University of Technology, 1997, 19(2): 65-67.

[13] Li T., Gao X. Research of Two-probe Method Measuring Electrical Cement Resistance[J]. Science Technology and Engineering, 2007, 7(21): 5 717

[14] Mao Q., Zhao B., Shen D., . Influence of Polarization on Conductivity of Carbon Fiber Reinforce Cement[J]. Journal of Material Research, 1997, 11(2): 195-198.

[15] Colic M., Morse D. Effects of Amplitude of the Radio Frequency Electromagnetic Radiation on Aqueous Suspensions and Solutions[J]. Journal of Colloid and Interface Science, 1998, 200(2): 265-272.

[16] Wang L., Li H. Present Research and Development of the Concrete with Magnetized Water[J]. Research & Application of Building Materials, 2007, 1: 13-18.

[17] Wu Z., Qin B., Luo Y. Microcosmic Analysis of Enhancing Strength Mechanism of Magnetized Concrete[J]. Journal of Jiaozuo Institute of Technology (Natural Science), 2004, 23(4): 291-298.

[18] Li C. Review for Application of Conductivity Separation (II)[J]. Beneficiation of Overseas Ore Conductivity Separation, 2002, 11: 23-29.

[19] Nwaiwu C. M. O., Alkali I. B. K., Ahmed U. A. Properties of Ironstone Lateritic Gravels in Relation to Gravel Road Pavement Construction[J]. Geotechnical and Geological Engineering, 2006, 24(2): 283-298.

[20] Hai D., Zhang H. On Induced Polarization Properties of Hematite and its Control Factors[J]. Journal of Guilin School of Metallurgy and Geology, 1981, 1: 18-23.

[21] Huang S., Zhang X. Pilot Study on Special Heavy C80 Iron Ore Concrete[J]. Railway Criterion Design, 1998, 8: 34-39.