Production of waste polystyrene-based composites and evaluation as corrosion inhibitor for rebar coating
Abstract
Corrosion is one of the most effective structural damages in rebar reinforced structural elements. Different methods are applied to protect concrete structures from corrosion. In this study, in order to prevent rebar corrosion, it has aimed to coating recycled polystyrene based composite materials and to examine them with electrical methods. The matrix element in the composites has obtained by dissolving the waste polystyrene foam material in benzine. Carbon, carbon fiber and standard sand were used as additives. Rebar reinforced cylinder concrete specimens, which completed their 28-day age in the curing pool, were subjected to accelerating corrosion by applying 70 Volt voltage in 3% NaCl water solution for 48 hours. Anode-cathode and four-probe conductivity measurement tests were performed to determine the corrosion condition of the samples. Splitting tensile test has been performed on the same samples. According to the results, it was found that although the Splitting tensile strength of coated rebar reinforced concrete samples did not change significantly compared to the control sample, all the coatings were advantageous in terms of corrosion prevention. It was also has found that there was good adherence between most rebar and concrete, as understood in the splitting tensile test.
Keywords
References
- 1. Polder, R.B., Test methods for on site measurement of resistivity of concrete—a RILEM TC-154 technical recommendation. Construction and building materials, 2001. 15(2-3): p. 125-131.
- 2. Delikanlı, F., Donatılı Betonda Korozyon Hasarı ve Giderilme Yolları. 2001, Fen Bilimleri Enstitüsü.
- 3. de Kayser Ortolan, V., Hilgert, T., Howland, J.J., Silva Oliveira, L.F., and Fonseca Tutikian, B., Comparative assessment of corrosion of concrete reinforced with unprotected steel and hot-dip galvanized steel. 2017.
- 4. Baltazar-Zamora, M., Bandala, E., Tello, M., Hurtado, G., Coca, F., Cedano, A., Barrios, C., Nuñez, R., Zambrano, P., and Tiburcio, C., Efficiency of Galvanized Steel Embedded in Concrete Previously Contaminated with 2, 3 and 4% of NaCl. International Journal of Electrochemical Science, 2012. 7: p. 2997-3007.
- 5. Polder, R., Andrade, C., Elsener, B., Vennesland, Ø., Gulikers, J., Weidert, R., and Raupach, M., Test methods for on site measurement of resistivity of concrete. Materials and Structures, 2000. 33(10): p. 603-611.
- 6. Glass, G., Page, C., and Short, N., Factors affecting the corrosion rate of steel in carbonated mortars. Corrosion Science, 1991. 32(12): p. 1283-1294.
- 7. Graeff, Â.G., Avaliação experimental e modelagem dos efeitos estruturais da propagação da corrosão em elementos de concreto armado. 2007.
- 8. Lima, R.C.A.d., Investigação do comportamento de concretos em temperaturas elevadas. 2005.
Details
Primary Language
English
Subjects
Engineering
Journal Section
Research Article
Authors
Heydar Dehghanpour
*
Türkiye
Enes Baş
Türkiye
Nihan Akçaer
This is me
Türkiye
Kemalettin Yılmaz
Türkiye
Publication Date
March 31, 2020
Submission Date
November 24, 2019
Acceptance Date
April 1, 2020
Published in Issue
Year 2020 Volume: 2 Number: 1