Product Data Sheet
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Sika® Loadflex®-524 LV

LOAD-BEARING, SEMI-RIGID, POLYUREA CONTROL JOINT FILLER

Sika® Loadflex®-524 LV is a technologically advanced, two-component, quick-setting, semi-rigid, solvent-free, self-levelling control joint filler

  • Quick-set formula reduces down time.
  • Excess material can be shaved off smooth as early as 15 minutes or as late as 24 hours after placement at 23 °C (73 °F).
  • Cures at temperatures down to -25 °C (-13 °F).
  • Hard, load-bearing filler designed to withstand industrial traffic.
  • Provides even load transfer across floor joints, thereby protecting joint edges from breaking down under traffic.
  • Two-components, easy to use, 1:1 mix ratio.
  • Improved consistency to allow easier dispensing and reduced blockage of equipment.
  • Seals joints from collecting dirt, dust and debris.
  • Improved moisture sensitivity.
  • Approved by the Canadian Food Inspection Agency.
Product Data Sheet
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Usage

  • Sika® Loadflex®-524 LV is recommended for use as filler for static interior, horizontal saw cuts or preformed control and construction joints.
  • Typically installed in facilities such as warehouses and industrial plants, where such joints are subject to load-bearing conditions involving wear and impact.
  • Sika® Loadflex®-524 LV is also used for repairing interior concrete slabs that have experienced random cracking due to shrinkage

Advantages

  • Quick-set formula reduces down time.
  • Excess material can be shaved off smooth as early as 15 minutes or as late as 24 hours after placement at 23 °C (73 °F).
  • Cures at temperatures down to -25 °C (-13 °F).
  • Hard, load-bearing filler designed to withstand industrial traffic.
  • Provides even load transfer across floor joints, thereby protecting joint edges from breaking down under traffic.
  • Two-components, easy to use, 1:1 mix ratio.
  • Improved consistency to allow easier dispensing and reduced blockage of equipment.
  • Seals joints from collecting dirt, dust and debris.
  • Improved moisture sensitivity.
  • Approved by the Canadian Food Inspection Agency.

Packaging

37.8 L (10 US gal.) unit.

Colour

37.8 L (10 US gal.) units: Grey and RAL 3010 Brick (RAL 3010 Brick, special order with min. quantity)

Product Details

Product Information

Shelf Life

1 year in original, unopened packaging.  

Storage Conditions

Store between 15 and 32 °C (59 and 89 °F). Condition product between 18 and 30 °C (65 and 86 °F) before using

Density

Part A = 1.11 g/mL. Part B = 1.10 g/mL. A + B = 1.1 g/mL (mixed)

Viscosity

Part A  2000 cps

Part B 400-700 cps
Technical Information

Shore A Hardness

80-85                                                        (23 °C (73 °F) ) 50 % R.H.) (ASTM D-2240)

Shore D Hardness

30-32                                                        (23 °C (73 °F) ) 50 % R.H.) (ASTM D-2240)

Tensile Strength

4.5 MPa (652 psi)                                     (23 °C (73 °F) ) 50 % R.H.) (ASTM D-638)

Tensile Stress at Specified Elongation

Deformation 6.9 MPa (1000 psi) 43.9 %                                (MIL-D-24613 mod.) 

Elongation at break

110 %                                                         (23 °C (73 °F) ) 50 % R.H.) (ASTM D-638)

Pull-Off Strength

Bond Strength > 1.5 MPa (218 psi)

Water Absorption

0.30 %                                                                                                         ASTM D570

Application

Application Information

Mixing Ratio

A:B = 1:1 by volume

Pot Life

35-40 seconds

Curing Time

Light traffic: 15 min at 23 °C (73 °F), 60 min at -25 °C (-13 °F)

Full traffic: 30 min at 23 °C (73 °F), 2 hours at -25 °C (-13 °F)

Product properties are typically averages, obtained under laboratory conditions.

Reasonable variations can be expected on-site due to local factors, including environment, preparation, application, curing and test methods.

Application Time

40 seconds

 
Consumption

Yield

Coverage rates for a 37.8 L (10 US gal.) unit (Sika® Loadflex®-524 LV should be installed to the full depth of the joint)

                                             Joint width

Joint width                                 3mm(1/8")                              6mm(1/4")

mm           (in)                          m             (ft)                        m             (ft)

25            (1)                           500         1640                    250            820

32            (1 1/4)                    388         1273                    193            633

38            (1 1/2)                    327         1072                    162            531

44            (1 3/4)                    280           918                    140            459

51            (2)                           242           794                    121            397

Note: The above chart is a theoretical guide only. Allowance must be made for surface profile, wastage, etc.
Application steps

SUBSTRATE PREPARATION

Surface must be clean, sound and dry. Remove all surface contaminants i.e. dust, grease, curing compounds, impregnations, waxes, foreign particles and disintegrated materials that might prevent bond. Ideally, surface preparation should be accomplished by mechanical means.

MIXING

Pre-stir component B thoroughly by hand before using. Do not mix by mechanical means. Do not pre-stir component A. Sika® Loadflex®-524 LV must be machine-mixed/-dispensed using a 1:1 ratio, plural component pump and 30 element static mixing nozzle. Note: Sika® Loadflex®-524 LV sets too quickly to allow hand mixing.

CLEAN UP

Clean all tools and application equipment immediately after use with Sika® Urethane Thinner and Cleaner. Once hardened, material can only be removed mechanically.

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