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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Durable Concrete Construction– Performance Monitoring Of Patterson River Bridge
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Abstract:The Patterson River Bridge carries Nepean Highway over Patterson River in Carrum, and was constructed in 1995 as part of a multi-level protection approach incorporating high quality concrete with supplementary cementitious materials (SCMs), application of protective coatings, many other durability provisions and testing for volume of permeable voids/permeability (VPV). The bridge consists of 4 spans and 3 piers each with two columns. Determination of the chloride penetration profile, in-situ strength and volume of permeable voids (VPV), in the nominated concrete was also undertaken. Additional testing on Pier 3 included half-cell potential and resistivity measurements, chloride, carbonation and compressive strengthbtesting and cover metre survey. Half-cell potential and corrosion rate measurements are in agreement with the embedded probe output, both indicating no corrosion activity at the present time, some 8 years after construction. The chloride penetration has been small and limited to the outer 0-15 mm of concrete surface, such that a chloride profile is not available as yet for the calculation of the Cl- diffusion coefficient. The VPV was about 10.5% indicating very high concrete quality. It is suggested that the high quality of concrete together with the surface coatings applied to the concrete soon after construction and the multi-level protection approach to durability has provided very effective protection against corrosion of steel reinforcement.
Concrete Institute of Australia, International Partner Access.
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