WJE PROJECTS

Madinat Yanbu Al-Sinaiyah

 
CLIENT
Parsons Brinckerhoff Douglas Quade, Inc.
OFFICE
Yanbu, Saudi Arabia

Concrete Corrosion Investigation

WJE was retained to perform an investigation of the corrosion of embedded steel reinforcing bars in various concrete structures at Madinat Yanbu Al-Sinaiyah.

BACKGROUND

The following sites were studied as part of this project: seawater intake structure at Power and Desalination Plant; Haii Al-Fairuz stairway support columns (Delta Housing); Haii Radwa R-3 grade beams for residential area (DITCO); Haii Radwa R7 and R8 columns in residential area; Haii Al-Marjan columns for dome-shaped shade structures; and City Center apartment complex grade beams.

SOLUTION

WJE engineers performed a visual inspection for signs of corrosion or sulfate attack deterioration. The engineers drilled concrete powder samples for subsequent acid-soluble chloride content profiles at various locations above and below grade. Copper-copper sulfate half-cell potential of reinforced concrete members was measured at various locations above and below grade.

WJE obtained sand samples for acid-soluble chloride content tests at various depths below grade and also at various randomly selected locations at near-grade locations within the RC area. Water samples were also obtained at various locations, including from various non-potable water trucks that were irrigating trees, to test for chloride ion content.