Influence of slag blended cement concrete on chloride diffusion rate

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Cement and Concrete Research

DOI:https://doi.org/10.1016/S0008-8846(97)00064-1· OSTI ID:516881

Dehghanian, C; Arjemandi, M ^[1]

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1. Univ. of Technology in Isfahan (Iran, Islamic Republic of). Dept. of Chemical Engineering

This research was conducted to investigate the effect of 0 to 30% partial replacement of cement by slag on chloride diffusion rate in concrete. Concretes with 0 to 30% slag were used and exposed to 2 to 5% NaCl solutions. The effect of different external salt concentration solutions and the influence of water-cement ratios ranging from 0.45 to 0.75 was also studied. In this research, different curing methods such as 9 to 18 days exposure to 100% humidity and 9 to 18 days submersion in distilled water were selected. The results indicated that after 90 days of exposure to salt solutions an/d 108 days of concrete age, chloride diffusivity for concretes containing slag almost remained the same. This effect was more pronounced for water-cement ratio of 0.45 and curing condition of 18 days submersion in water. An increase in water-cement ratio beyond 0.55 indicated a higher chloride diffusion rate. Curing condition for slag blended cement concrete also indicated a different behavior in chloride diffusivity. The best curing method obtained for this type of concrete was 18 days submersion in water.

• OSTI ID: 516881
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 6 Vol. 27; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
CHLORIDES
CONCRETES
CRACKS
CURING
DIFFUSION
FRAGMENTATION
PERMEABILITY
REINFORCED CONCRETE
SLAGS
SODIUM CHLORIDES
WASTE PRODUCT UTILIZATION