The effects of sulfate ion on concrete and reinforced concrete

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Cement and Concrete Research

DOI:https://doi.org/10.1016/S0008-8846(97)00105-1· OSTI ID:544097

Yilmaz, A B ^[1]; Yazici, B; Erbil, M ^[2]

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1. Mustafa Kemal Univ., Iskenderun (Turkey). Faculty of Fisheries
2. Cukurova Univ., Adana (Turkey). Dept. of Chemistry

The effects of the sulfate ions and the pH on the strength of concrete and reinforcement steel have been investigated. Concrete and reinforced concrete samples prepared by using mixing water having different sulfate ion concentrations (standard, 400 ppm and 3,500 ppm) were cured in a water bath containing the same ion concentrations of mixing water or distilled water at two different pH values (8 and 5). The samples were exposed to the environments for 90 days. The compressive strength of concrete, pH values of bath, galvanic current changes and potentials (vs. Ag/AgCl) of reinforcing steel were measured. It was observed that the compressive strength of the concrete decreases as the SO{sub 4}{sup {minus}2} ion concentration increases. The galvanic currents were high for the first 28 days and then these currents decreased steadily. It was found that the potentials have been rising up to the passive potential of the reinforcing steel where the SO{sub 4}{sup {minus}2} concentration is low.

• OSTI ID: 544097
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 8 Vol. 27; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPRESSION STRENGTH
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
MECHANICAL PROPERTIES
PH VALUE
REINFORCED CONCRETE
SAMPLE PREPARATION
SULFATES