The Effect of Acid Rain on Strength and Corrosion Performance of Slurry Infiltrated Fiber Concrete
The acid rain has a serious effect on the durability of reinforced concrete, especially when the pH value of the acid rain decreased lower than a certain limit. The acid rain can cause erosion of concrete stone and corrosion of steel reinforcement. This research is carried out to study the effect of simulated acid rain on strength and corrosion performance of slurry infiltrated steel fiber concrete. Different steel fiber contents (1.5, 6, 8 and 10%) were investigated. The efficiency of using local metakaolin, corrosion inhibitor admixture and epoxy protective coating to improve the concrete mixes performance were also investigated. The concrete mixes were immersed in diluted nitric acid for 180 days. Compressive strength, flexural strength, corrosion rate, corrosion potential, electrical resistivity, total porosity and change in weight tests were carried out. Results indicated that slurry infiltrated steel fiber concrete mixes were able to develop compressive and flexural strength satisfactory after 180 days of immersion in diluted nitric acid, where the percentage of increase in compressive and flexural strength ranged between (22- 60 %) and (45-89%) respectively. Specimens with epoxy protective coating showed the best performance with regard to strength development and corrosion resistance comparing to other concrete mixes. Using of local metakaolin and/ or corrosion inhibitor also enhance the performance of slurry infiltrated steel fiber concrete mixes as compared to non-traded mixes.
Ali, M. A “Properties of slurry infiltrated fiber concrete (SIFCON) ”, Ph. D Thesis, civil engineering dep., UOT, Iraq, 2018.
Al-Saffawi, A.Y., Tawfiq, Kh. S. and AlQathelly, F. “ Acidic rain falling on Mosul city. Iraq”, Journal of Education and Science – Pure Sciences, Vol. 25, No. 5, 2012.
Awadh, S. M. “The Atmospheric Pollution of Baghdad City, Iraq” Proceeding of 3rd scientific conference of the College of Science, University of Baghdad, 24 to 26 March 2009.
ASTM- A615 “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete” Vol.01.04, 2015
ASTM A820, “ Standard Specification for Steel Fibers for Fiber-Reinforced Concrete” Vol.01.04, 2015.
ASTM C150, “ Standard Specification for Portland Cement1” Vol.04.01, 2015.
ASTM C 33 “ Standard Specification for Concrete Aggregates1”, Vol.04.02, 2015.
ASTM C 494/C 494M, “ Standard Specification for Chemical Admixtures for Concrete”, Vol.04.02, 2015.
ASTM C 618, “Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete1”, Vol.04.02, 2015.
ASTM C 642, “Standard Test Method forDensity, Absorption, and Voids in Hardened Concrete”, Vol.04.02, 2015.
ASTM C876, “ Standard Test Method for Half-Cell Potentials of Uncoated Reinforcing Steel in Concrete” 2015.
Berrocal, C. G., Lundgren, K., Löfgren, I. “Influence of Steel Fibers on Corrosion of Reinforcement in Concrete in Chloride Environments: A Review” Fiber Concrete Journal, 2013.
B.S.1881, Part116, “ Method for Determination of Compressive Strength of Concrete Cubes”, British Standard Institution, 1989.
B.S.1881, Part118, “Method for Determination of Flexural Strength” , British Standard Institution, 1989.
B.S. 6920-1“Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water, Specification”, 2000.
Dagar, K. “ Slurry Infiltrated Fibrous Concrete (SIFCON) ” International Journal of Applied Engineering and Technology, Vol. 2-2 2012, pp.99-100.
Drdlova, M., ŘÍDKÝ, R., Čechmánek, R. "Influence of Fibre Type and Fibre Volume Fraction on Dynamic Properties of Slurry Infiltrated Fibre Concrete" Materials Science Forum, Vol. 865, 2016.
Gilani, A. M. “Various Durability Aspects of Slurry Infiltrated Fiber Concrete” Ph.D. thesis in Civil Engineering submitted to Middle East Technical University, 2007. Turkey
Salih, S. A., and Al-Rubaie, M. F. “Utilization of Waste Glass as Mineral Admixture in Concrete” The Iraqi Journal for Mechanical and Material Engineering, Special Issue (A), 2010.
Salih, S. A., Hassan, M.S., Al-Rubaie, M. F. and Yousifany, A. “Assessment, Protection, and Repairing of Corroded Reinforced Concrete Structure in Iraq” The 4th International Scientific Conference of Salahaddin University-Erbil, October 18-20, 2011.
Mahadam, P.D. and Mane, A.V. “ Effect of simulated acidic rain concentrations on selected materials used in construction” Environmental Science, ESAIJ, 8(10), 2013.
Poursaee, A. “Corrosion of Steel in Concrete Structures” Woodhead Publishing , imprint of Elsevier, 2016.
Wang, Y., Niu, D., and Song, Z. “ Effect of acid rain erosion on steel fiber reinforced concrete" Journal of Wuhan University of Technology-Mater. Sci. Ed. Feb.2017.
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