There are no words to describe how seeing this a year after abrasive blasting and applying 3 coats makes the owner feel… <disappointed>, <resigned>, <frustrated>, <deceived>
HRCSA: Preserving Steel
When dealing with aged, in-place, corroded structures, traditional film-form coatings do not have the right chemistry needed to stop pack-rust growth.
When bearings freeze due to corrosion, pressure is introduced to the bridge superstructure.
When corrosion build between plates expands and out of plane bending occurs, the integrity of the structure is put at risk, the rating is affected, and fasteners are weakened.
Structure Critical Corrosion Can Shave Years of Service Life off Your Structure.
For years it was believed that “There is nothing you could do about rust bleed leaking from connections.” until as recently as 30 years ago when HRCSA formulations were created specifically to chemically step active corrosion inside connections. Although the HRCSA Self-priming topcoat is applied stand-alone on exposed steel substrate, there is one specific area where it it is provided a boost: inside pack-rusted joints and connections and other steel openings.
Four Simple Steps for Extending the Service Life of Your Steel Assets.
Step 1: High pressure water clean with salt remover to produce a clean, tightly adhered substrate and flushed joints and connections.
Step 2: Apply high pressure air to remove water and humidity from surfaces and inside connections
Step 3: Apply HRCSA Penetrant under pressure to fill capillary channels inside connections.
Step 4: Apply HRCSA Self-Priming Topcoat to Penetrant treated connections, rivet heads and sharp angles using a brush. Overcoat the entire structure.
The photo at the bottom is that of an HRCSA treated pack-rusted connection after 17 years in service.
The HRCSA melding process is achieved by first saturating, flushing, and blowing out connections and then flooding the inside of the connections with low viscosity HRCSA Penetrant/Sealer under pressure. This material chemically treats corrosion causing acids inside the crevice corroded or pack rusted joints or connections. Once applied, this material will remain chemically active inside the connection for as long as it is sealed in by the HRCSA Self-Priming Topcoat. Together, they form a mid-layer of chemistry we call the “meld zone”. This meld-zone serves as a chemical reserve that is a continuous source of corrosion-fighting chemistry as HRCSA continually wicks it way deeper and deeper into the crevice during structural movement (expansion and contraction). When this process is applied to bearing plates, the HRCSA chemistry applies lubricity as it frees up corrosion frozen bearings.