Case Histories - NY Bridge

CHLOR*RID Used for OvercoatingBridge in Binghamton, NY

In a bridge overcoating project on State Route 201 across the Susquehanna River near Binghamton, CHLOR*RID cleaned not only de-icing salts found atop the bridge, but airborne salts, such as sulfates and nitrates, and other corrosive elements that settled underneath it.

CHLOR RID worked with the experienced contracting firm Amstar of NY to treat and coat the two-beamed bridge above the Susquehanna River. CHLOR RID’s NACE Certified Coating Inspector performed pre-wash testing to find zero nitrates on the east side beam, and 30-40 µg of nitrates on the west side beams. After the bridge was pressure washed with 1% CHLOR*RID solution salt levels were reduced by 63%.

Amstar had the experience and knowledge to realize that merely performing a water wash procedure prior to rust removal required by most specifications does not adequately remove soluble salt contamination. The addition of CHLOR*RID to the wash water is supported in the test results, which showed that washing performed prior to surface preparation allowed salts to be leeched through the existing rust. The CHLOR*RID was effectively reduced salts to very low levels.

CHLOR*RID has proven that significant salt reduction can be obtained by washing with a salt remover prior to surface preparation by abrasive blasting or other types of surface preparation. Test Data Bridge on S.R. 201 over the Susquehanna River, Binghamton, NY.

Pre-Wash Test Results
(avg. reading in micrograms per square centimeter)

Chlorides 4.3
Sulfates 30
Nitrates 8.8
Total Salts 43.3

Post-Wash Test Resultswith 1% Chlor*Rid Solution
(avg. reading in micrograms per square centimeter)

Pre-Wash Test Results
(avg. reading in micrograms per square centimeter)

Chlorides 1
Sulfates 11.6
Nitrates 3.5
Total Salts 16.3

Percent Reduction Chlorides

Pre-Wash Test Results
(avg. reading in micrograms per square centimeter)

Chlorides 77%
Sulfates 62%
Nitrates 60%
Total Salts 63%