Location: Harbor, NJ

Structure: 96th Street, Stone Harbor Bridge, Cape May County 

Problem

Surtreat Solutions was asked to examine the 96th Street, Stone Harbor, Bridge located in the Cape May County of New Jersey. The reason for the examination was the visual display of spalls located on the underside eastern abutment of the bridge surface. Surtreat performed a variety of tests to determine contributing causes of the damage. Those tests were corrosion rate, determined by the Galva Pulse, chloride content and pH levels. A compressive strength analysis had already been established. The Corrosion rate as measured by the Galva Pulse indicated active corrosion at the rebar level. Tests were completed at two different locations and both locations indicated corrosion rates at levels above 30 μm/yr. Readings above 30 μm/yr are considered to be of significant concern. The chloride content was significantly high at three tested locations with readings of 1900, 2200 and 5500 parts per million (ppm). At three other tested areas the readings showed 500 + ppm (shown in Figure One). Corrosion opportunity is actively increased once the chloride ppm levels exceed 250 ppm. The pH of the concrete was 12. This is not unusual for a bridge of this age. The compressive strength was 5500 psi per Andrew Foden of Parsons Brinckerhoff. This is consistent with bridges of this age.

WANT TO LEARN HOW WE ACHEIVED REDUCTION IN CORROSION POTENTIAL BY 142% JUST MONTHS AFTER ONE APPLICATION OF SURTREAT®?