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SeaShield Marine Systems SeaShield Marine Systems
SeaShield 550
Epoxy Grout
Encapsulation and Repair
Grout for Concrete and Steel
SeaShield 550 is a 3-component
water displacing epoxy resin/aggregate
formulation which provides a durable,
well bonded repair to concrete and
steel below water.
Uses
SeaShield 550 Epoxy Grout is designed for underwater
application. Because of its relatively long pot life, it is easy
to handle yet still provides high early strength.
It can either be placed by hand into forms or pumped into
place and is typically used for rebuilding piers, jetties and
barrier walls. It is also very effective for chemical anchoring
of bolts and anchors in rails, equipment bases and other
structural applications.
Physical Properties
(unmixed) @ 77
°
F
Component A (resin):
Specific Gravity
1.11
Viscosity
600 cps
Color
Light Gray
Component B (hardener):
Specific Gravity
.98
Viscosity
100 cps
Color
Amber
Component C (aggregate):
Free Flowing Powder
Color
Neutral
*Aggregate I or II.
Mixing Ratios
For 5:1 Mixing Ratio - Hand Placing
or Pumping for Aggregate I
Wt.
Vol.
"A"
80
78
"B"
20
22
"C" - Aggregate I
500
300
For 10:1 Mixing Ratio - Hand Placing
for Aggregate II
Wt.
Vol.
"A"
80
78
"B"
20
22
"C" - Aggregate II
1000
600
These mix designs are given as a guide. Site temperature,
material temperature, placing thickness may cause these to
be amended. A trial mix should always be checked before
proceeding.
Cure Schedule
Pot Life 200 g. @ 77
°
F
120 Minutes
*Tack-free time @ 50
°
F/77
°
F
20/10 Hours
*Through cure @ 50
°
F/77
°
F
60/30 Hours
Cure time is considerably longer at colder temperatures.
*Based on 2 inches coverage thickness.
Minimum Application Temperature
SeaShield 550 Epoxy Grout cures at temperatures down
to 32
°
F.
Moisture Sensitivity
SeaShield 550 Epoxy Grout has good wet adhesion and
good water displacement capabilities.
Physical Testing
(7 day cure @ 77
°
F w/ 5 to 1 mix ratio)
Compressive Strength
ASTM C579
10,500 PSI
Tensile Strength
ASTM C307
2,200 PSI
Shear Strength
ASTM C882
2,000 PSI
Shrinkage
ASTM C531
0.07% Max.
Water Absorption
ASTM C413
0.45% Max.
Surface Preparation
This is the single most important step. The life of the grout
system will be extended considerably by adhering to the
following recommendations:
a) Must be cleaned free of old existing coatings. New
concrete should cure a minimum of 28 days. A Member of Winn & Coales International
HOUSTON:
18211 Chisholm Trail,
Houston, Texas,
U.S.A. 77060
Tel: 281- 821-3355
Fax: 281- 821-0304
TORONTO:
90 Ironside Crescent,
Unit 12, Toronto,
Ontario, Canada M1X1M3
Tel: 416-291-3435
Fax: 416-291-0898
www.densona.com
DENSO NORTH AMERICA INC.
b) Remove all debris from working surfaces.
c) Remove all oils, greases, dirt and wax solutions from
surface.
d) Sandblast, shotblast or hydroblast surface to remove
contaminants which will interfere with proper adhesion.
Mixing
Please note that for thickness of SeaShield 550 Epoxy
Grout, the following aggregate mix shall be used:
a) Pumping or pouring at less than 2" Use 1 gallon
550 resins and 1 ea. 44 lb bag of Aggregate I
b) Pouring at greater than 2" Use 1 gallon 550 resins
and 2 ea. 44 lb bags of Aggregate II
Supplied as a three package system. Open component "A"
and agitate resin until evenly blended. Open container "B",
mix well and pour entire contents into component "A"
container. Agitate with low speed mixer (200-300 rpm) until
one even color develops. Be sure to scrape the sides and
bottom of the container while mixing. Add aggregate to the
premixed resin and mix thoroughly.
Yield
5:1 - 1 gallon 550 A & B with 44 lbs. of Aggregate I
(pumpable or pourable) yields = 0.40 cubic feet
10:1 - 1 gallon 550 A & B with 88 lbs. of Aggregate II
(pourable only) yields = 0.70 cubic feet
Application
Placing by Hand Pouring into Forms
No priming is required. Once mixed, pour into formwork,
ensuring it is well compacted, vibrating where possible.
Use paraffin wax or polyethylene sheet to ensure easy
formwork removal after pouring.
Placing by Pumping
It is recommended that SeaShield 550 A & B should be
stored at 68
°
F to 86
°
F (20
°
C to 30
°
C) for 24 hours prior to
use for optimum pumping and productivity.
Follow the typical design mix outlined under Mixing Ratio.
In practice, a mix of 44 lbs. Aggregate I plus 1 Gallon
SeaShield 550 (A & B) is an ideal volume. Immediately
after mixing, it should be transferred into the hopper of the
peristaltic pump. NOTE: Prior to using the pump, all lines
shall be primed by circulating the SeaShield hose lubricant.
Pumping of this lubricant is normally very rapid. Make sure
all SeaShield hose lubricant is pumped out of the hose prior
to pumping mixed SeaShield 550 Epoxy Grout.
Clean Up
Pumping equipment is best cleaned with SeaShield
equipment cleaner solution. Recirculating using a sponge
"pig" is an efficient cleaning procedure. Use cleaning
solvent such as Acetone or MEK. CAUTION: This solvent
is flammable so there must be no open lights, flames,
sparking motors or pilot lights in the vicinity. Smoking near
the solvent is to be forbidden. All equipment must be
cleaned immediately after use.
Safety and Toxicity
Epoxy systems are capable of producing severe injury to,
or destruction of, skin and eye tissues. They are classified
as corrosive for shipping purposes. Precautions must be
taken to prevent prolonged or repeated skin contact and it
is essential to protect the eyes from splashes. Protective
clothing, rubber gloves and chemical goggles should be
worn when working with these products.
Some people become sensitized when working with epoxy
resin systems. The sensitization may appear in the form of
skin or respiratory reactions. Avoid breathing vapors,
particularly if these products are used in a confined area.
Face mask with respirator #1224 is usually adequate. Air
supplied mask is suitable for use in confined areas.
Storage
Store in heated area and on pallets. Do not allow products
to freeze. Shelf life in unopened containers is two years.
Packaging
SeaShield 550 - 1 Gallon Units (A & B)
Aggregate I - 44 lbs. per bag
Aggregate II - 44 lbs. per bag
Warranty
Manufacturer WARRANTS that the product conforms to its
chemical description and is reasonably fit for the purpose
stated on its Technical Bulletin when used in accordance
with its directions. Manufacturer makes NO OTHER
WARRANTY either expressed or implied. Buyer assumes
all risk in handling.