Product Data Sheet
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Sikadur®-51

Sikadur®-51

Epoxy flexible resin for sealing joints

Sikadur®-51 is a 2 component semi-self levelling epoxy sealant for joint sealing.

  • Prevents deterioration of joint edges
  • Excellent adhesive properties
  • Complies with ACI-302.1R (4.10-Materials for sealing joints)
  • It can be used on slopes of up to 15°
  • Absorbs shock, is durable and resists heavy traffic and forklift tires
  • It can be used as a safety sealant (non-pick)
Product Data Sheet
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Usage

  • Filling of horizontal control and construction joints with little or no movement
  • Filling of cracks with little or no movement
 

Advantages

  • Prevents deterioration of joint edges
  • Excellent adhesive properties
  • Complies with ACI-302.1R (4.10-Materials for sealing joints)
  • It can be used on slopes of up to 15°
  • Absorbs shock, is durable and resists heavy traffic and forklift tires
  • It can be used as a safety sealant (non-pick)

Packaging

3 kg kit (Parts A + B)

Colour

Light grey

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Complies with ACI-302.1R (4.10-Materials for sealing joints)
Product Information

Shelf Life

Twenty-four (24) months from date of manufacture when stored as stated in the original unopened package.

Storage Conditions

Between + 4°C and + 35°C. Condition the material at a temperature between +8°C to +24°C before use.

Density

~ 1.55 kg/L  at 23°C

Viscosity

Comp. A:

5.800 cps

Comp. B:

7.900 cps

Mix A + B :7.000 cps
Technical Information

Shore A Hardness

70 to 80

Shore D Hardness

 > 50

Tensile Strength

3.9 MPa

Water Absorption

1.86 %

Application

Application Information

Mixing Ratio

Comp. A : Comp. B = 1 : 1 (by volume)

Pot Life

10°C~ 120 minutes

20°C

~ 60 minutes

30°C

~ 30 minutes

Curing Time

Pedestrian traffic

1 to 2 days (dependent on temperature)

Heavy vehicle traffic

2 to 6 days (dependent on temperature)

Applied Product Ready for Use

Movement Capacity

± 2.5%, total movement = 5%

Bond Strength: Sandblasted Steel

~ 2.5 MPa

Bond Strength: Sandblasted Concrete

~ 2.0 MPa
Application steps

SUBSTRATE QUALITY

All surfaces must be clean, dry and free from any loosely adhering particles or surface contaminants such as dirt, oil, dust, grease, etc.

SUBSTRATE PREPARATION

Joint Configuration: Width : Depth ratio should be 1 : 1 to 1 : 2.  Minimum joint depth should be 12 mm.

In open joints the correct depth should be established by inserting Sika® PEF Backing Rod of a suitable dimension (refer Sika® PEF Rod data sheet). If the joint has a solid formed base it is essential to apply a bond breaker tape to this surface in order to prevent back adhesion. This will then allow the sealant unrestrained movement throughout the depth of the joint.

PRIMING:

Priming is not required, except for concrete surfaces that are slightly damp. Use Sikadur®-52 as a primer, brush it out to form an even and uniform film thickness. Allow primer to become tacky before applying Sikadur®-51.

MIXING

Premix each component. Pour Component A and Component B into a clean container in equal parts by volume. Mix appropriately with a low speed drill (400 to 600 rpm) for at least 3 minutes until the consistency and colour are uniform. Mix only the amount that will be applied within the product's potlife.

 

CLEANING OF TOOLS

The uncured material can be removed from tools with Sika® Thinner C (NZ). Cured product can only be removed mechanically.

 

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