Denso Seashield fx-225 User manual

SeaShield™ FX-225

Non-Shrink Underwater Grout

WHERE TO USE

• Concrete repairs in marine structures

• Underwater grouting applications

• Pile jacket repairs with the SeaShield Series

FX-70 structural repair and protection system

• Seawall repairs without dewatering

• Form and pour repairs above water

ASSESSMENT

DESCRIPTION

SeaShield FX-225 Non-Shrink Underwater Grout is a ﬂ owable, high-strength, non-metallic, non-segregating grout designed with a

special anti-washout admixture, corrosion inhibitors, and polymers. SeaShield FX-225 can be pumped or tremied underwater to

grout SeaShield FX-70™ and ﬁ berglass pile jackets and as a structural repair mortar for formed applications above and

below water without dewatering.

FEATURES

• Flowable and pumpable

• No de-watering or cofferdams required

• Shrinkage compensated

• Bonds well to concrete

• May be extended with clean, washed

nominal ³⁄ in. (9 mm) pea gravel

• Ready to use — simply add potable water

• Suitable for saltwater marine applications

PRODUCT DATA

All testing performed at 73˚F (23˚C) and 50% R.H.

Generic Description

Cementitious underwater grout

Packaging

55 lb. (24.9 kg) bag

3,000 lb. (1,134 kg) bulk bag

Product Yield ASTM C138

0.47 ft.3 (0.013 m3) per 55 lb. (24.9 kg) bag

0.64 ft.3 (0.018 m3) per 55 lb. (24.9 kg) bag extended

with 30 lb. (13.6 kg) of pea gravel

Working Time

30 minutes at 75°F (24°C)

Set Time

ASTM C191

Initial 2.5 hours minimum

Final 3.5 to 7 hours

Storage

Store dry between 40° and 95°F (4°–35°C)

Shelf Life

1 year in unopened packaging

VOC

0 g/L

CSI Speciﬁ cation: 03 01 00 Maintenance of Concrete

TECHNICAL INFORMATION

The data herein is based on laboratory testing under controlled conditions.

Variations may result from mixing methods and jobsite conditions. All testing

performed at 73°F (23°C) and 50% R.H., unless otherwise noted. Results were

performed using 134 ﬂ . oz. (4.0 L) water per 55 lb. (25 kg) of SeaShield FX-225.

Splitting Tensile Strength

ASTM C496

28 days 600 psi 4.14 MPa

Density

ASTM C138

134 lb./ft.3 2,146 kg/m3

Compressive Strength

ASTM C109

24 hours 4,000 psi 27.5 MPa

3 days 5,000 psi 34.5 MPa

7 days 6,000 psi 41.3 MPa

28 days 7,000 psi 48.2 MPa

Height Change

ASTM C1090

Shows positive expansion

28 days

Less than 0.1% expansion

Volume Change

ASTM C827

Less than 0.5% expansion

Flexural Strength, 28 days

ASTM C348

1,200 psi 8.3 MPa

Freeze Thaw Resistance

ASTM C666, 300 cycles

100% durability factor

Bond Strength

ASTM C882M, hardened to

plastic grout

28 days 3,000 psi

Modulus of Elasticity

ASTM C469, 29 days

4.9 x 106 psi 33,780 MPa

Resistance to De-icing Salts

ASTM C672, 50 cycles

Excellent resistance – 0 grams loss

/ 0 visual rating

Bleeding

ASTM C232-C940

No bleeding

Length Change

ASTM C157

Wet Cured 0.03%

Dry Cured -0.18%

Flow Table

ASTM C1437 modiﬁ ed per

ASTM C1107

75 – ideal for pump or tremie

applications underwater

www.denso.net

+44 (0)208 670 7511 VER 27.01.22

SURFACE PREPARATION

SeaShield FX-70 Jackets

Surface must be at least 35°F (2°C) prior to application. All surfaces must be sound, free of loose rust, marine growth, oil,

and other contaminants. Consult a qualiﬁ ed professional engineer in all cases when section loss exceeds 25% only.

Concrete: Prepare surface by high-pressure water-blasting or other mechanical means to meet ICRI Guideline 310.2R

CSP 6-9. Repair or replace any reinforcing steel as determined by a qualiﬁ ed professional engineer.

Steel: Prepare surface by high-pressure water-jetting or other mechanical means necessary to meet SSPC-SP12/

NACE 5 WJ-4. Repair or replace any structural steel elements with excessive section loss as determined by a qualiﬁ ed

professional engineer.

Wood: Prepare surface by high-pressure water-blasting or other mechanical means necessary to achieve a sound

surface, free of all contaminants.

All submerged forms should be installed by certiﬁ ed professional divers. All forms must be sealed appropriately to

prevent grout leakage during installation.

Formed applications: Concrete and reinforcing steel to receive repair mortar must be sound, clean, and free of all

contaminants that could impair product adhesion, bond, or performance. Concrete should be a minimum of 28 days

old or substantially cured to the equivalent design strength prior to SeaShield FX-225 installation. Prepare concrete

and reinforcing steel in accordance with ICRI Guideline 310.1R. Saw-cut the perimeter of the repair area, taking care to

avoid cutting any reinforcing steel. Remove all loose or deteriorated concrete by chipping hammer, water jetting, or other

mechanical means to reach sound concrete and achieve an open pore structure and surface proﬁ le per ICRI Guideline

310.2R CSP 5-9, taking care to avoid micro-cracking. Remove all corrosion, rust, and surface contaminants from

reinforcing steel by sandblasting or other mechanical means. Remove all cleaning media and debris by water jetting,

vacuum or blowing with high-pressure, oil-free air.

Forming: Forms must be liquid tight to prevent leakage during installation. Use appropriate sealants or putties to seal

all surfaces to prevent leaks. Use an appropriate release agent prior to erecting forms to improve release. Do not allow

release agent to be applied to any non-formed surfaces as it can inhibit the bond of SeaShield FX-225.

MIXING

For optimal product performance, condition to 70°F (21°C). Do not prepare more material than can be used in the

working time of the product. Mix with a mortar mixer or a low-speed (300–600 rpm) drill and mixing paddle. For best

results, start with 90% of total mixing water and slowly add entire contents of SeaShield FX-225 while mixing to avoid

clumping. Adjust using remaining 10% of total mixing water until desired consistency is achieved scraping unmixed

material from the sides and bottom of mixing container as needed to ensure all material is mixed. Consult the

printed instructions on the product package for the maximum recommended amount of mixing water. Mix for

approximately 3 minutes. Do not re-temper. Continue to slowly agitate to prevent product from setting in the mixer up to

the maximum working time of 30 minutes at 75°F (24°C). SeaShield FX-225 can be extended with ³⁄ in. (9 mm) pea gravel

up to 30 lb. (13.6 kg) per bag, and requires the use of a mortar or grout mixer with stationary barrel and moving mixing

blades. Aggregate used must be nonreactive, clean, well graded, and saturated surface dry (SSD), have low absorption

and high density in compliance with ASTM C1260, C227 and C289. Do not use limestone aggregate.

LIMITATIONS

• Do not apply in water temperatures below 40°F (4°C)

• Do not apply in water temperatures above 90°F (32°C)

• Underwater product placement should

only be attempted only by certiﬁ ed and

experienced diving contractors

• Underwater placement by pump or tremie only

• Always follow ACI 305 and 306 for hot or

cold weather installations for best results

beyond published recommendations

• Not designed as a leveling mortar, must be formed

• Do not mix partial bags

• Avoid contact with aluminum surfaces

• Site conditions can greatly affect cure

times and product performance

SeaShield™FX-225 Non-Shrink Underwater Grout

PLANNINGPREPARATION

Application Thickness Limits

Annular Space FX-70 Jacket Above Water Application Underwater Application

Minimum Neat 2" (51 mm)

" (13 mm) 1" (25 mm)

Maximum Neat 8" (203 mm) 3" (76 mm) 8" (203 mm)

Minimum Extended 3" (76 mm) 2" (51 mm) 2" (51 mm)

Maximum Extended — 8" (203 mm) 24" (610 mm)

www.denso.net

+44 (0)208 670 7511 VER 27.01.22

APPLICATION

SeaShield FX-70 Jackets

For pumping applications, pump properly mixed SeaShield FX-225 as follows: Install pumping ports at 90 degrees

from tongue-and-groove joint, alternating sides. Place the ﬁ rst port approximately 1 ft. (30 cm) from the bottom of

the jacket. Place subsequent ports at a maximum 5 ft. (1.5 m) vertical spacing, alternating sides. Begin pumping

from the lowest port and move up from port to port. Do not exceed 10 ft. (3 m) pumping distance from any individual

port.

For tremie applications, make sure the hose extends all the way to the bottom of the form. Fill the form to the

desired level, allowing water to displace from the top of the form. Depending on the head pressure, depth of pour,

and size of the vessel, the tremie hose may need to be retracted as the form ﬁ lls to maintain ﬂ ow.

All submerged jackets should be inspected by a certiﬁ ed professional diver during the ﬁ lling process to check for

leaks and proper placement.

Formed applications, below water

For pumping applications, pump properly mixed SeaShield FX-225 as follows: Install pumping ports as required

for the repair. Begin pumping from the lowest port and move up from port to port making sure the form is completely

ﬁ lled and the water is displaced. Do not exceed form design pressure rating.

For tremie applications, make sure the hose extends all the way to the bottom of the form. Fill the form to the

desired level, allowing water to displace from the top of the form. Depending on the head pressure, depth of pour,

and size of the vessel, the tremie hose may need to be retracted as the form ﬁ lls to maintain ﬂ ow. Do not exceed

form design pressure rating.

EXECUTION

SeaShield™FX-225 Non-Shrink Underwater Grout

www.denso.net

+44 (0)208 670 7511 VER 27.01.22

CAUTION

May cause serious eye and skin irritation or damage. When combined with water, may cause moderate to severe alkali

burns. Contains silica; do not breathe dust.

Protective Measures: The use of safety glasses and chemical-resistant gloves is recommended. Use appropriate

clothing to minimize skin contact. The use of a NIOSH-approved respirator is required to protect respiratory tract when

ventilation is not adequate to limit exposure below the permissible exposure limit (PEL). Refer to Safety Data Sheet,

please contact Winn & Coales (Denso) Ltd for an SDS.

FIRST AID

Eye Contact: Immediately ﬂ ush eyes with plenty of cool water for at least 15 minutes while holding the eyes open.

If redness, burning, blurred vision, or swelling persists, seek medical advice.

Skin Contact: Remove product and wash affected area with soap and water. Do not apply greases or ointments.

Remove contaminated clothing. Wash clothing with soap and water before reuse. If redness, burning, or swelling

persists, seek medical advice.

Ingestion: DO NOT INDUCE VOMITING. Seek medical advice. Never administer anything by mouth to an unconscious

person. Rinse mouth out with water. Never leave affected person unattended. If vomiting occurs spontaneously, lay

affected person on their side, keeping head below hips to prevent aspiration of material into lungs.

Inhalation: Remove affected person to fresh air. If affected person continues to experience difﬁ culty breathing, seek

medical advice.

CLEANUP

Spills: Sweep or vacuum material and place in a suitable container. Keep out of sewers, storm drains, surface waters,

and soils.

Surface Clean: Remove any residue with hot soapy water. Cured material can be removed only by mechanical means.

Tools and Equipment: Clean with soap and water immediately after use.

Skin: Use a non-toxic, pumice-based soap, citrus-based hand cleaner, or waterless hand-cleaner towel. Never use

solvents to remove product from skin.

Disposal: Dispose of container and unused contents in accordance with federal, state, and local requirements.

Containers may be recycled; consult local regulations for exceptions.

SAFETY

SeaShield™FX-225 Non-Shrink Underwater Grout

IMPORTANT INFORMATION

Winn & Coales (Denso) Ltd pursue a policy to develop and continually improve all of our products and therefore information given in this data sheet is intended as a general guide and does not constitute a

warranty, speciﬁ cation or risk assessment. These guidelines may not cover all circumstances; however, our sales personnel are committed to assisting the user in establishing the suitability of the product

for its intended purpose and additional speciﬁ c information, including Safety Data Sheets, is available on request. We recommend that installation is carried out with due regard to Health and Safety and

in accordance with relevant local statutes and regulations. Any conﬂ ict between these guidelines and the speciﬁ c project speciﬁ cations must be resolved by the user before work commences. All rights

reserved.

www.denso.net

+44 (0)208 670 7511 VER 27.01.22