Materials Performance

NOV 2018

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

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43 MATERIALS PERFORMANCE: VOL. 57, NO. 11 NOVEMBER 2018 TABLE 3. COMPRESSIVE STRENGTH OF SAMPLES PREPARED BY MIX DESIGN IN TABLE 2 AFTER 8 h EXPOSURE TO WATER VAPOR Concrete Mix Design According to Table 2 Sample Dimension Compressive Strength (kg/cm 2 ) 1 Cubic (15 × 15 × 15 cm) 464 2 Cubic (15 × 15 × 15 cm) 571 Concrete Mix Design According to Table 3 3 Cubic (15 × 15 × 15 cm) 286 4 Cubic (15 × 15 × 15 cm) 304 TABLE 4. ELECTRICAL CHARGE PASSING THROUGH THE SAMPLES IN RCP TEST AFTER 8 h EXPOSURE TO WATER VAPOR Proposed Concrete Mix Design (see Table 2) Sample Dimension Electrical Charge (Clump) 1 Cylinder (ϕ = 10, L = 5 cm) 921 2 Cylinder (ϕ = 10, L = 5 cm) 733 Previous Concrete Mix Design (see Table 2) 3 Cylinder (ϕ = 10, L = 5 cm) 5,477 4 Cylinder (ϕ = 10, L = 5 cm) 4,864 expect it would have greater durability when exposed to environmental condi- tions. The details and results of this testing will be presented in a subsequent paper. Conclusion Mechanical and corrosion factors are involved in the early degradation of con- crete H poles. Therefore, improvements that increase mechanical strength of the H poles and application of methods that reduce the penetration of corrosive agents in the buried zone of H poles, such as apply- ing epoxy-glass coating, reduce the perme- ability of concrete and increase the durabil- ity of concrete poles under environmental conditions. References 1 A. Aghajani, M.A. Golozar, A. Saatchi, et al., "Stray Alternating Current and Environmen- tal Effects on Concrete Power Poles," MP 52, 8 (2013). 2 A. Aghajani, M.A. Golozar, A. Saatchi, et al., "Stray Alternating Current Problems in Con- crete Power Poles," MP 52, 5 (2013). 3 A. Aghajani, M.A. Golozar, A. Saatchi, et al., "Protecting Concrete Power Poles from Stray Alternating Current," MP 52, 10 (2013). 4 A. Aghajani, M. Urgen, "Effects of Highly Pol- luted Atmospheres on Power Distribution Systems," MP 53, 12 (2014). 5 ASTM D1411-09, "Standard Test Methods for Water-Soluble Chlorides Present as Admix- tures in Graded Aggregate Road Mi xes" (West Conshohocken, PA: ASTM Interna- tional, 2009). 6 ASTM D512-12, "Standard Test Methods for Chloride Ion in Water" (West Conshohocken, PA: ASTM, 2012). 7 Iran Concrete Regulation , P ublication of Management and Planning Organization of Iran (2000). 8 AASHTO T176-08, "Standard Method of Test for Plastic Fines in Graded Aggregates and Soils by Use of the Sand Equivalent Test" (Washington, DC: American Association of State and Highway Transportation Officials, 2017). 9 L. Bertolini, B. Elsener, P. Pedeferri, et al., Corrosion of Steel in Concrete, 1st ed. (Wein- heim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2004). 10 ASTM C289-03, "Standard Test Method for Potential Alkali-Silica Reactivity of Aggre- gat es" (West Conshoho cken , PA: ASTM, 2003). 11 CEB Standard 044-3, "Specification for Ac- ceptance Test of Concrete Poles" (Colombo, Sri Lanka: Ceylon Electricity Board, 1966). ABBAS AGHAJANI is on the faculty of the Subsea R&D Center, Isfahan University of Technology (IUT), Isfahan, Iran, email: aghajani@cc.iut.ac.ir. He has been a researcher at the university for 21 years. He has published more than 30 project reports in the fields of alternating current and direct stray current in concrete, cathodic protection, and coatings. He has published more than 33 papers, 16 journal papers, and one book. BEHNAZ AGHAJANI is a student in the Department of Civil Engineering at IUT, email: b.aghajani99@gmail.com. He col- laborates on Abba Aghajani's projects. Control of Environmental Degradation of Concrete Power Poles Next Month in MP Effect of Volatile Corrosion Inhibitors on Cathodic Protection Underdeposit Corrosion in Crude Tower Overheads SCC Behaviors of Weather Steel Welded Joints Electrochemical Behavior of AA7003 Sour Environment Underdeposit Corrosion of X60 2018 Index to MP Articles and Authors

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