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Haloflex primer protects rebuilt earthquake bridge

Haloflex primer protects rebuilt earthquake bridge October 1990 PIGMENT AND RESIN TECHNOLOGY 11 'Haloflex ' primer protects rebuilt earthquak e bridge California's San Mateo-Hayward bridge, rebuilt after earthquake damage, has been coated with a high performance water-borne primer from ICI Resins. This compound, formulated wit h 'Haloflex' 202 vinyl acrylic terpolymer emulsion, provides th e high level of corrosion resistance specified for near-coastal bridge and -hi ­ tectural structures. Referenced PWB-145, the primer meets all California Department of Transportation (CALTRANS) corrosion protection standards and curren t 420gra m per litre VOC content regulations. The primer system will also meet projected 1992 standards of 34 0 grams per litre for this type of coating. CALTRANS carried ou t extensive comparative testing of water-borne and zinc-based primers. And , based on those findings, senior chemical test engineer Ray Warness predicts ICI Resins' primer will give full protection for at least 2 0 years. Adhesion eliminates need for sandblasting In addition to lowering levels of acceptable VOC emissions, California is ceasing to sandblast on many bridge projects since particulate from lead- or zinc- "For the safety of the painters wh o maintain these containing paints is classifie d as hazardous wast e under types of bridges on a routin e basis, w e need a non-toxic, state health and safety regulations. With its excellent non-flammable primer," says Warness, "Th e 'Haloflex' adhesion to a variety of existing bridge coatings, the system enables us to offer good corrosion protection to 'Haloflex' primer system allows bridge painters t o curtail continuous-box-and-plate-girde r structures without or even eliminate sandblasting on some applications. creating flammable and toxic solvent build-up during For example , whe n th e Noyo Harbour Bridge near Fort application". Bragg, California, wa s painted , concer n over contaminat­ ing waters that support the nearby harbour fishing Balancing performance with compliance community left CALTRANS wit h limited surface prepara­ Water-borne primer systems help solve one of the tion options. biggest problems facing state transportation agencies: "W e couldn't blast tha t bridge at all, " says Warness, providing highly effective corrosion resistance for "s o we pressure-washed and spot-cleaned it, then bridges and other steel structures while meeting painted the 'Haloflex' primer right over it. Our latest environmental coatings standards. Additional worker reports indicate that the bridge is in better shape now safety and health consideration make the formulating tha n it has been in years." challenge that much more difficult. Warnes s observes that the vinyl acrylic terpolymer Like CALTRANS, many other US state agencies are emulsion used in PWB-14 5 imparts excellent "creep " or workin g hard to maintain bridge-paint performance corrosion-spread resistance to a primed steel surface. levels withi n a mor e environmentally-sensitive market­ This can isolate corrosion long enough to use more place. Currently several other states are using or environmentally-sound surface preparation alternatives, investigating water-borne primers based on 'Haloflex', such as spot- or steam-cleaning. such as PWB-145 , as a wa y of achieving good protection of steel surfaces without using solvent-based systems. Reduced solvent exposure Details, ICI Resins, PO Box 13, The Heath, Runcorn, The 'Haloflex' primer is considered non-toxic and non­ Cheshire WA 7 4QF. Tel: 092 8 514444. flammable, protecting painters wh o work wit h it as wel l as th e bridges. This is a n important consideration, even in outdoor applications such as continuous-box-and- plate bridge structure. During recent maintenance work on the 75 0 ft. long box-beam section of the San Mateo-Hayward Bridge, special attention was paid to the choice of paints since th e bridge lacked significant ventilation underneath the roadway. "Build-up of toxic an d flammabl e solvents was a major concern," comment s Warness. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pigment & Resin Technology Emerald Publishing

Haloflex primer protects rebuilt earthquake bridge

Pigment & Resin Technology , Volume 19 (10): 1 – Oct 1, 1990

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0369-9420
DOI
10.1108/eb042772
Publisher site
See Article on Publisher Site

Abstract

October 1990 PIGMENT AND RESIN TECHNOLOGY 11 'Haloflex ' primer protects rebuilt earthquak e bridge California's San Mateo-Hayward bridge, rebuilt after earthquake damage, has been coated with a high performance water-borne primer from ICI Resins. This compound, formulated wit h 'Haloflex' 202 vinyl acrylic terpolymer emulsion, provides th e high level of corrosion resistance specified for near-coastal bridge and -hi ­ tectural structures. Referenced PWB-145, the primer meets all California Department of Transportation (CALTRANS) corrosion protection standards and curren t 420gra m per litre VOC content regulations. The primer system will also meet projected 1992 standards of 34 0 grams per litre for this type of coating. CALTRANS carried ou t extensive comparative testing of water-borne and zinc-based primers. And , based on those findings, senior chemical test engineer Ray Warness predicts ICI Resins' primer will give full protection for at least 2 0 years. Adhesion eliminates need for sandblasting In addition to lowering levels of acceptable VOC emissions, California is ceasing to sandblast on many bridge projects since particulate from lead- or zinc- "For the safety of the painters wh o maintain these containing paints is classifie d as hazardous wast e under types of bridges on a routin e basis, w e need a non-toxic, state health and safety regulations. With its excellent non-flammable primer," says Warness, "Th e 'Haloflex' adhesion to a variety of existing bridge coatings, the system enables us to offer good corrosion protection to 'Haloflex' primer system allows bridge painters t o curtail continuous-box-and-plate-girde r structures without or even eliminate sandblasting on some applications. creating flammable and toxic solvent build-up during For example , whe n th e Noyo Harbour Bridge near Fort application". Bragg, California, wa s painted , concer n over contaminat­ ing waters that support the nearby harbour fishing Balancing performance with compliance community left CALTRANS wit h limited surface prepara­ Water-borne primer systems help solve one of the tion options. biggest problems facing state transportation agencies: "W e couldn't blast tha t bridge at all, " says Warness, providing highly effective corrosion resistance for "s o we pressure-washed and spot-cleaned it, then bridges and other steel structures while meeting painted the 'Haloflex' primer right over it. Our latest environmental coatings standards. Additional worker reports indicate that the bridge is in better shape now safety and health consideration make the formulating tha n it has been in years." challenge that much more difficult. Warnes s observes that the vinyl acrylic terpolymer Like CALTRANS, many other US state agencies are emulsion used in PWB-14 5 imparts excellent "creep " or workin g hard to maintain bridge-paint performance corrosion-spread resistance to a primed steel surface. levels withi n a mor e environmentally-sensitive market­ This can isolate corrosion long enough to use more place. Currently several other states are using or environmentally-sound surface preparation alternatives, investigating water-borne primers based on 'Haloflex', such as spot- or steam-cleaning. such as PWB-145 , as a wa y of achieving good protection of steel surfaces without using solvent-based systems. Reduced solvent exposure Details, ICI Resins, PO Box 13, The Heath, Runcorn, The 'Haloflex' primer is considered non-toxic and non­ Cheshire WA 7 4QF. Tel: 092 8 514444. flammable, protecting painters wh o work wit h it as wel l as th e bridges. This is a n important consideration, even in outdoor applications such as continuous-box-and- plate bridge structure. During recent maintenance work on the 75 0 ft. long box-beam section of the San Mateo-Hayward Bridge, special attention was paid to the choice of paints since th e bridge lacked significant ventilation underneath the roadway. "Build-up of toxic an d flammabl e solvents was a major concern," comment s Warness.

Journal

Pigment & Resin TechnologyEmerald Publishing

Published: Oct 1, 1990

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