An Investigation of the Effect of the Different Mix Constituents on Concrete Electric Resistivity
Steel corrosion in concrete is considered as a main
engineering problems for many countries and lots of expenses has been paid for their repair and maintenance annually. This problem
may occur in all engineering structures whether in coastal and offshore or other areas. Hence, concrete structures should be able to
withstand corrosion factors existing in water or soil. Reinforcing
steel corrosion enhancement can be measured by use of concrete
electrical resistance; and maintaining high electric resistivity in concrete is necessary for steel corrosion prevention. Lots of studies
devoted to different aspects of the subjects worldwide. In this paper, an evaluation of the effects of W/C ratio, cementitious materials, and
percent increase in silica fume were investigated on electric resistivity of high strength concrete. To do that, sixteen mix design
with one aggregate grading was planned. Five of them had varying amount of W/C ratio and other eleven mixes was prepared with
constant W/C ratio but different amount of cementitious materials.
Silica fume and super plasticizer were used with different proportions
in all specimens. Specimens were tested after moist curing for 28 days. A total of 80 cube specimens (50 mm) were tested for concrete
electrical resistance. Results show that concrete electric resistivity can be increased with increasing amount of cementitious materials
and silica fume.
[1] Advanced cement technologies: Technical bulletin 10.106, "Concrete
Permeability".
[2] P. K. Mehta, and J. M. P. Monteiro, "Concrete (Microstructure, Properties, and Materials) (Advanced concrete technology),"
University of California, Berkely, 2002.
[3] Neville, A.M, Properties of Concrete, 4th Ed., Addison Wesley Longman, 1998, pp. 280-293.
[4] J. M. R. Dotto, A. G. De Abreu, D. C. C. Dal Molin, and I. L. Muller,Cement and Concrete Composites, vol. 26 (1),pp. 1-39, 2004.
[5] I. Turkman, and M. Gavgali, "Materials letters," vol. 57 (21), pp. 3222-
3233, 2003.
[1] Advanced cement technologies: Technical bulletin 10.106, "Concrete
Permeability".
[2] P. K. Mehta, and J. M. P. Monteiro, "Concrete (Microstructure, Properties, and Materials) (Advanced concrete technology),"
University of California, Berkely, 2002.
[3] Neville, A.M, Properties of Concrete, 4th Ed., Addison Wesley Longman, 1998, pp. 280-293.
[4] J. M. R. Dotto, A. G. De Abreu, D. C. C. Dal Molin, and I. L. Muller,Cement and Concrete Composites, vol. 26 (1),pp. 1-39, 2004.
[5] I. Turkman, and M. Gavgali, "Materials letters," vol. 57 (21), pp. 3222-
3233, 2003.
@article{"International Journal of Architectural, Civil and Construction Sciences:50041", author = "H. M. Ghasemzadeh and Y. Mohammadi and Gh. Nouri and S. E. Nabavi", title = "An Investigation of the Effect of the Different Mix Constituents on Concrete Electric Resistivity", abstract = "Steel corrosion in concrete is considered as a main
engineering problems for many countries and lots of expenses has been paid for their repair and maintenance annually. This problem
may occur in all engineering structures whether in coastal and offshore or other areas. Hence, concrete structures should be able to
withstand corrosion factors existing in water or soil. Reinforcing
steel corrosion enhancement can be measured by use of concrete
electrical resistance; and maintaining high electric resistivity in concrete is necessary for steel corrosion prevention. Lots of studies
devoted to different aspects of the subjects worldwide. In this paper, an evaluation of the effects of W/C ratio, cementitious materials, and
percent increase in silica fume were investigated on electric resistivity of high strength concrete. To do that, sixteen mix design
with one aggregate grading was planned. Five of them had varying amount of W/C ratio and other eleven mixes was prepared with
constant W/C ratio but different amount of cementitious materials.
Silica fume and super plasticizer were used with different proportions
in all specimens. Specimens were tested after moist curing for 28 days. A total of 80 cube specimens (50 mm) were tested for concrete
electrical resistance. Results show that concrete electric resistivity can be increased with increasing amount of cementitious materials
and silica fume.", keywords = "Corrosion, Electric resistivity, Mix design, Silica fume", volume = "3", number = "10", pages = "355-4", }