Ocean Engineering Concrete Using High-Volume GGBS

Abstract:

To improve ocean engineering durability, concrete using high-volume ground granulated blast-furnace slag (GGBS) was prepared, its mechanical property and durability were investigated. 4% activator and 61% GGBS were used to replace 65% cement in cementitious material. Activator was used to improve workability, volume stability and early strength of high-volume GGBS concrete. Ocean concrete using high-volume GGBS has good impermeability with small gas diffusion coefficient and relative permeability coefficient. As the good property of resistance to chloride-ion penetration with a low effective diffusion coefficient, it can protect steel-bar from corrosions. Property of frost resistance is also favorable. Expansions caused by alkali-silica reaction and sulfate attack fall down markedly after using high-volume GGBS. It is proved that the high-volume GGBS concrete with good mechanical property and durability is applicable to the constructing of ocean engineering concrete.

• Periodical: Applied Mechanics and Materials (Volume 238)
• Pages: 71-74
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.238.71
• Online since: November 2012
• Authors: Ke Liang Li
• Keywords: Concrete, Durability, Mechanical Property, Ocean Engineering, Slag

References

[1] Chinese Code GB/T 18736-2002, Mineral admixtures for high strength and high performance concrete, China Building Industry Press, Beijing, 2002.

[2] Chinese Code JTJ275-2000, Corrosion Prevention Technical Specifications for Concrete Structures of Marine Harbor Engineering. China Communication Press, Beijing, 2000.

[3] P. S. Mangat, B. T. Molloy, Prediction of long term chloride concentration in concrete, Materials and Structures, 27 (1994) 338-346.

DOI: 10.1007/bf02473426