High Pressure (5,000 psi) Water Wash
Cleaning
And Overcoating of the
New York State Thruway Bridge
Over the CSX Railroad at Mile Post 156
With the Termarust
High Ratio, Co-Polymerized, Calcium Sulfonate coating
system
For the New York
State Thruway Authority
Albany, New York District
Coating Materials from
Termarust Technologies, Vienna,
Virginia
Project Painting Date: October,
2002
SUBJECT: Description and pictures of 5,000 psi
pressure wash cleaning and painting of the Thruway bridge over the CSX
railroad, at Mile Post 156, about 15 miles West of Albany, New York.
FROM: Craig A. Ballinger, P.E.
Manager
– Corporate Development; Termarust Technologies
Phone
(toll free): 888-279-5494 – then press ‘4’ to transfer call to my office
Email:
cballinger@termarust.com
OVERVIEW
For this project the NYS
Thruway specified the use of pressure
washing and the Termarust coating system to:
·
Minimize cost for painting of a bridge over the CSX
railroad tracks, that carry 60 trains/day – primarily because the Termarust
system is considered to be a ‘one-coat’ (3 step) system; which minimizes the
time needed to paint a bridge.
·
Take advantage of the joint (contractor-Termarust)
5-year warranty against coating system failure (with no exclusions for inaccessible
places; e.g. inside connections).
References
New York State Thruway Authority
CLEANING AND APPLICATION PROCEDURES
The following Termarust
standard procedures were followed:
1. Pressure wash clean the bridge with a
5,000 psi pressure washer (at a 6” standoff distance) with clean water with an
additive of Chlor*Rid to remove non-visible salts; e.g. chlorides.
(For
more information on Chlor*Rid – see www.chlor-rid.com)
2. With dry compressed air – blow dry all
connections (and cross-over points on built-up lattice members. (almost all
superstructure members)
3. Apply Termarust TR2200 Penetrant into
all ‘open’ connections
4. Apply a caulk (or stripe) coat of
Termarust TR2100 into/onto edges of connections
5. Spot prime areas of bare steel and
tightly adhered rust with 5 mils DFT of Termarust TR2100
6. Overcoat the entire area with another 5
mils DFT of TR2100.
It is important to note
that steps 3 through 6 are done immediately after each other; i.e. wet-on-wet;
which is why the Termarust system is considered to be a “One Coat” system.
The final result was:
·
5
mils DFT on tight paint,
·
10
mils DFT on bare steel and tight rust, and
·
20
mils DFT over connections.
Photo 1 – Underside of bridge was black, from train
smoke.
Photo 2 – Workmen starting to clean the underside of
the bridge.
Photo 3 – The Termarust painting is being completed.
Photo 4 – Close-up of a facia beam, painted with
Termarust.
