PROTECTION OF PILESPROTECTION OF PILES

Naveed Ahmad2005-MS-STR-C-86

To safe piles from outside effects which can reduce the To safe piles from outside effects which can reduce the strength or life of the piles. The outside effects may be strength or life of the piles. The outside effects may be

WHAT IS PILE PROTECTION?

Corrosion of steel pilesCorrosion of steel piles Frost actionFrost actionChemical attacksChemical attacksWater effect on timberWater effect on timberWeather attacksWeather attacksULTRA VOILET EFFECTSULTRA VOILET EFFECTS

SERIES 30SERIES 30 (TIMBER PILE PROTECTION) (TIMBER PILE PROTECTION)

TECHNIQUES OF PILE PROTECTION

• This method is used for theThis method is used for the protection of timber piles.protection of timber piles.• Can be applied on new and old piles.Can be applied on new and old piles.• This system utilizes sea shield marine tape and an This system utilizes sea shield marine tape and an outerouter cover that encases the pile.cover that encases the pile.• The tape creates an airtight seal around the timber The tape creates an airtight seal around the timber pilepile which kills the marine borer activity.which kills the marine borer activity.

The Series 30 System was used to protect timber piles at Fort Monoro.

FEATURESFEATURES

• Quality components.Quality components.• Easy and economical to install.Easy and economical to install.• No inner membrane is required.No inner membrane is required.• Provides a long and maintenance free service life.Provides a long and maintenance free service life.• Low cost.Low cost.• Durable, UV-resistant outer cover provides excellent Durable, UV-resistant outer cover provides excellent

mechanical protection.mechanical protection.• Proven 75 years history of sealing out oxygen with densoProven 75 years history of sealing out oxygen with denso

petrolatum tape. petrolatum tape.

SERIES 100SERIES 100 (STEEL,CONCRETE,WOOD) (STEEL,CONCRETE,WOOD)

• This method is used for theThis method is used for the protection of steel protection of steel concrete & wood piles.concrete & wood piles.• This system utilizes petrolatum based tape. There are This system utilizes petrolatum based tape. There are some other materials like denso paste S105, densyl some other materials like denso paste S105, densyl mastic and sea shield marine tape. mastic and sea shield marine tape. • The tape acts as an anti corrosion membrane and The tape acts as an anti corrosion membrane and works effectively for steel piles.works effectively for steel piles.•A tough, ultraviolet-resistant outer cover is provided for A tough, ultraviolet-resistant outer cover is provided for mechanical protection against damage.mechanical protection against damage.•Strapping system is used to secure outer cover.Strapping system is used to secure outer cover.

The U.S. Navy installed the Sea Shield Series 100 system to protect over 400 24” to 30” piles.

LaGuardia airport used the sea shield 100 system to provide

corrosion protection for over 2000 steel piles

FEATURESFEATURES

• Long, maintenance free service life offers improved cost Long, maintenance free service life offers improved cost effectiveness over other form of corrosion protection.effectiveness over other form of corrosion protection.

• Minimal surface preparation required.Minimal surface preparation required.• Components can be applied under water.Components can be applied under water.• Removable outer cover allows periodic inspection of Removable outer cover allows periodic inspection of

substructure. substructure. • Safe to apply and environmentally responsible. Petrolatum Safe to apply and environmentally responsible. Petrolatum

based components are chemically inert, non toxic , non based components are chemically inert, non toxic , non flammable and electrically resistant. flammable and electrically resistant.

• Outer covers have high impact resistance and are UV-Outer covers have high impact resistance and are UV-stabilized.stabilized.

SERIES 160SERIES 160 (TIMBER PILE PROTECTION) (TIMBER PILE PROTECTION)

• This method is used for theThis method is used for the protection of wood piles.protection of wood piles.• In this system only outer cover is required and there is In this system only outer cover is required and there is nono Use of tape. Use of tape. • The outer cover made up of 160 mil DHPE and creates The outer cover made up of 160 mil DHPE and creates snug fit around timber piles from 8” to 14” diameter..snug fit around timber piles from 8” to 14” diameter..•The outer covers are fabricated in 5ft to 4ft length and The outer covers are fabricated in 5ft to 4ft length and includes top and bottom circumferential foam seals .includes top and bottom circumferential foam seals .•Strapping system is used to secure outer cover.Strapping system is used to secure outer cover.• These covers are then nailed into the wooden pile.These covers are then nailed into the wooden pile.

FEATURESFEATURES

• Prevents the pile from marine attack.Prevents the pile from marine attack.• Provides abrasion and puncture resistance in aggressive Provides abrasion and puncture resistance in aggressive

coastal environment.coastal environment.• Simple design allows for easy installation.Simple design allows for easy installation.• Adds years of service life to piles. Adds years of service life to piles. • Long, maintenance-free service life. Long, maintenance-free service life.

SERIES 2000HDSERIES 2000HD (STEEL,CONCRETE,WOOD)(STEEL,CONCRETE,WOOD)

Heavy duty pile protection system with marine grade Heavy duty pile protection system with marine grade petrolatum tape and an HDPE cover secured with bolted petrolatum tape and an HDPE cover secured with bolted system. system. •The piles are covered by petrolatum based tape which The piles are covered by petrolatum based tape which is is anti corrosive.anti corrosive.•A tough outer cover is provided to prevent weathering A tough outer cover is provided to prevent weathering and and mechanical damage .mechanical damage .•Thickness of outer cover can be selected according to Thickness of outer cover can be selected according to the requirements..the requirements..• These covers are then secured by using 316SS marine These covers are then secured by using 316SS marine grade stainless steel bolts and nuts.grade stainless steel bolts and nuts.

FEATURESFEATURES

• Long, maintenance free service life.Long, maintenance free service life.• Prevents spelling and corrosion of steel reinforcements in Prevents spelling and corrosion of steel reinforcements in

concrete piles.concrete piles.• Minimal surface preparation required.Minimal surface preparation required.• Fast and easy installation.Fast and easy installation.• Can be applied under water. Can be applied under water. • High impact resistance in aggressive environment. High impact resistance in aggressive environment. • Ultra Violet resistance.Ultra Violet resistance.• Safe to apply and environmentally responsible.Safe to apply and environmentally responsible.• This system can be used on offshore platform legs and This system can be used on offshore platform legs and

exposed piping in the splash and tidal zones.exposed piping in the splash and tidal zones.

SERIES 500SERIES 500 (STEEL,CONCRETE,WOOD)(STEEL,CONCRETE,WOOD)

Heavy duty pile protection system with a fiber glass Heavy duty pile protection system with a fiber glass jacket and sea shield 550 epoxy grout.jacket and sea shield 550 epoxy grout. •This system is comprised of a Fiber Foam Jacket which This system is comprised of a Fiber Foam Jacket which is high quality formulation fiber glass and sea shield 550 is high quality formulation fiber glass and sea shield 550 epoxy grout. .epoxy grout. .•The jacket can be fabricated 1/8” to 3/16” thickness.The jacket can be fabricated 1/8” to 3/16” thickness.•The fiber foam jacket is provided with a vertical The fiber foam jacket is provided with a vertical closure.closure.• Noncorrosive standoffs (grout spacers) can be used Noncorrosive standoffs (grout spacers) can be used inside the jacket to maintain proper spacing around the inside the jacket to maintain proper spacing around the piling when pumping or pouring the Seashield 550 piling when pumping or pouring the Seashield 550 epoxy grout.epoxy grout.

FEATURESFEATURES

• Thoroughly clean the existing pile by waterblasting, Thoroughly clean the existing pile by waterblasting, sandblasting or other acceptable methods.sandblasting or other acceptable methods.

• If a mud line repair is required, excavate the mud at the If a mud line repair is required, excavate the mud at the base of the pile and install the jacket.base of the pile and install the jacket.

• Prepare the jacket with required stand-offs prior to using Prepare the jacket with required stand-offs prior to using seashield 550 epoxy grout.seashield 550 epoxy grout.

• Position the jacket around the pile and secure with a select Position the jacket around the pile and secure with a select strapping system every 18” or as required.strapping system every 18” or as required.

• Prepare bottom seal with seashield epoxy grout and allow Prepare bottom seal with seashield epoxy grout and allow to set. Pumping shell not commence until bottom seal is to set. Pumping shell not commence until bottom seal is fully cured.fully cured.

• Fill jacket with seashield epoxy grout at a constant slow Fill jacket with seashield epoxy grout at a constant slow rate of placement within allowable pressure rating. rate of placement within allowable pressure rating.

FEATURESFEATURES

• Outstanding abrasion resistance.Outstanding abrasion resistance.• Easy to installEasy to install• Non corrosive.Non corrosive.• Requires inexpensive pumping equipment.Requires inexpensive pumping equipment.• Flowable epoxy grout.Flowable epoxy grout.• Excellent adhesion to substrate. Excellent adhesion to substrate. • High impact resistance.High impact resistance.• UV resistant.UV resistant.• Long maintenance free service life.Long maintenance free service life.

FAB FOAM PILE JACKETFAB FOAM PILE JACKET

Nylon fabric jacket to provide a form for encasement of Nylon fabric jacket to provide a form for encasement of concrete.concrete. •Jacket is available in two types FAB FOAM-I (Nylon Jacket is available in two types FAB FOAM-I (Nylon fabric) which is high strength synthetic water permeable fabric) which is high strength synthetic water permeable nylon and FAB FOAM-II (Nylon ballistic) which is a nylon and FAB FOAM-II (Nylon ballistic) which is a ballistic impermeable ballistic impermeable materialmaterial and prevents weeping and and prevents weeping and loss of concrete into the surrounding environment.loss of concrete into the surrounding environment.•The jacket can be manufactured in 1ft to 50ft length.The jacket can be manufactured in 1ft to 50ft length.

APPLICATIONAPPLICATION

• Thoroughly clean the existing pile by waterblasting or other Thoroughly clean the existing pile by waterblasting or other acceptable methods.acceptable methods.

• Install steel or other reinforcement to the pile as required Install steel or other reinforcement to the pile as required by the project specifications. All ends of the reinforcement by the project specifications. All ends of the reinforcement shall be turned to the pile to avoid damage to the fabric shall be turned to the pile to avoid damage to the fabric jacket.jacket.

• Spacers can also be used to avoid damage but should be Spacers can also be used to avoid damage but should be non metallic. non metallic.

• Fab-Foam is then positioned around the pile and secure Fab-Foam is then positioned around the pile and secure with the strapping .with the strapping .

• Fill the Fab-foam jacket with the cementitous material at Fill the Fab-foam jacket with the cementitous material at constant rate of placement through the port hole.constant rate of placement through the port hole.

• Injected material should include a superplastizer . Injected material should include a superplastizer .

FEATURESFEATURES

• Non corrosive.Non corrosive.• Minimum labor cost.Minimum labor cost.• Light weight.Light weight.• Quick and economical solution to repair deteriorated piles. Quick and economical solution to repair deteriorated piles. • Easy to apply concrete encasement jacket. Easy to apply concrete encasement jacket. • Zipper closure system.Zipper closure system.• Long maintenance free service life.Long maintenance free service life.

REFERENCESREFERENCES

www.densona.com www.corusgroup.com Vector Corrosion Technologies Imbema pacific indonesia. Geoforum Pile Info. POLCOR Protection. Hyper Physics Corrosion Wikkipedia Encyclopedia