Product Data Sheet
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Sikadur®-31 Hi-Mod Gel LPL

High-modulus, high-strength, structural, extended pot life, epoxy paste adhesive

Sikadur®-31 Hi-Mod Gel LPL is a 2-component, 100 % solids, moisture-insensitive, high-modulus, high-strength, structural epoxy paste adhesive. It conforms to the current ASTM C-881, Types I and  IV, Grade-3, Class-C and AASHTO M-235 specifications.

  • Extended pot life
  • Moisture-tolerant before, during, and after cure
  • High-modulus, high-strength, structural paste adhesive
  • Excellent adhesion to concrete, masonry, metals, wood, and most structural materials
  • Paste consistency ideal for vertical and overhead applications
  • Fast-setting and strength-producing adhesive
  • Convenient easy mix ratio A:B = 2:1 by volume
Product Data Sheet
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Usage

  • Structural bonding of concrete, masonry, metals, wood, etc. to a maximum glue line of 1/8 in. (3mm)
  • Seals cracks and around injection ports prior to pressure-injection grouting
  • Interior, vertical, and overhead repair of concrete as an epoxy mortar binder
  • As a pick-proof sealant around windows, doors, lock-ups etc. inside correctional facilities
 

Advantages

  • Extended pot life
  • Moisture-tolerant before, during, and after cure
  • High-modulus, high-strength, structural paste adhesive
  • Excellent adhesion to concrete, masonry, metals, wood, and most structural materials
  • Paste consistency ideal for vertical and overhead applications
  • Fast-setting and strength-producing adhesive
  • Convenient easy mix ratio A:B = 2:1 by volume

Packaging

3 gal. (11 L) units

Color

Concrete gray

Product Details

Product Information

Shelf Life

24 months in original, unopened containers

Storage Conditions

Store dry at 40–95 °F (4–35 °C).

Condition material to 65–75 °F (18–24 °C) before using.

Consistency

Non-sag paste
Technical Information

Compressive Strength

36 hours6,400 psi (41.4 MPa)
2 day7,000 psi (41.4 MPa)
3 day9,000 psi (48.3 MPa)

Slant Shear Strength

Bond StrengthHardened Concrete to Hardened Concrete
2 days

2,000 psi (20.7 MPa)

14 day (moist cure)

2,300 psi (20.0 MPa)

Heat Deflection Temperature

124 °F (51 °C)

(7 days [fiber stress loading = 264 psi (1.8 MPa)]

(ASTM D-648)

Application

Application Information

Mixing Ratio

Component ‘A’ : Component ‘B’ = 2:1 by volume

Pot Life

Approximately 120 minutes at 73 °F (23 °C) (gal., L volume)
Approximately 60 minutes at at 90 °F (32 °C) (gal., L volume)

Cure Time

Tack-Free Time: 6–8 hours
Consumption

Coverage

1 gal. yields 231 cu. in. of epoxy paste adhesive and grout. 1 gal. mixed with 1 gal. by loose volume of oven-dried aggregate yields approximately 346 cu. in. of epoxy mortar.
Application steps

SUBSTRATE PREPARATION

Surface must be clean and sound. It may be dry or damp, but free of standing water. Remove dust, laitance, grease, curing compounds, impregnations, waxes, foreign particles, disintegrated materials and any other contaminants.

  

Preparation Work: Concrete - Sandblast or use other approved mechanical methods.
Steel - Blast clean or use other equivalent mechanical means to achieve a white metal finish.

MIXING

Pre-mix each component. Proportion 1 part Component ‘B’ to 2 parts Component ‘A’ by volume into a clean pail. Mix thoroughly for 3 minutes with Sika paddle on low-speed (400–600 rpm) drill until uniform in color. Mix only that quantity that can be used within its pot life.

  

To prepare an epoxy mortar: Slowly add up to 1 part by loose volume of an oven-dried aggregate to 1 part of the mixed Sikadur®-31 Hi-Mod Gel LPL and mix until uniform in consistency.

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