CROM MIX

Powerflex

Technical Data.

 

Mix Ratio: Refer to specifications

Curing time: 28 days

Appearance: Milky liquid

Thinner: Water

Shelf Life: 12 months

Coverage: Approx 1.5L/m2

Screed:

Mix: 0.2L of 1 part Powerflex to 3 parts Water.

1kg of Cement

3kg Sand

Primer coat prior to screed placement:

1 part Powerflex to 1 part Water

Waterproof Render

Mix: 0.5L of 1 part Powerflex to 3 parts Water

1kg of Cement

3kg of Sand

Mechanical Properties:

  • Modulus of elasticity: 17000 N/mm2
  • Adhesion Strength: 2.5 - 3.5 N/mm2
  • Flexural Strength: > 13N/mm2
  • Compressive Strength: >65 N/mm2
  • Shrinkage: < 0.3mm/m2
  • Water absorption: <4%

Application Guide.

 

Surface Preparation

  1. Ensure all surfaces are clean, dry and free from dust, grease, oil and laitance, prior to application.
  2. Prior to applying a screed the substrate should be primed with a 1:1 mixture of Powerflex and water.
  3. Brush primer on at the pproximate rate of 6 - 12 m2 / L. Allow to become tacky then apply topping.
  4. For porous surface prime with a slurry coat, consisting of 1kg cement, 1 - 2kg of sand and 1:1 mixture of Powerflex and Water

Application Procedure and Equipment

  1. Add gauging liquid to sand /cement mix and ensure thorough dispersion prior to application.
  2. The mixes have a pot life of approximately 30 min. Batch sizes should be calculated accordingly.
  3. Apply concrete and mortars onto wet or tacky primer.
  4. Compact and level with screed bar, and finish with steel float.
  5. If over coating the screed, oleo-resinous floor finishes should be avoided.

Transport and Storage.

 

Sizes:4L, 20L

Weights: 4kg, 20kg

Dangerous Goods Class: N/A

Flash Point: N/A

UN Number: N/A

 

Corrocem

Technical Data.

 

Usage: 20% Corrocem by the cement weight should be added.

Curing time: 28 days

Colour: Fine Grey Powder

Shelf life: 12 months

Application Guide.

 

Please refer to detailed CROMMIXTM Corrocem Placement Specification available from Crommelin

Precautions.

 

Please refer to detailed CROMMIXTM Corrocem Placement Specification available from Crommelin

Transport and Storage.

 

Sizes: 20kg / bag

Weights:20kg

Dangerous Goods Class: N/A

Flash Point: N/A

UN Number: N/A

 

Acrylic Modifier

Technical Data.

 

Mix Ratio: 15% Modifier to cement weight

Curing Time: 28 days

Colour: Milky liquid

Thinner: Water

Shelf Life: 12 months

Plain O.P.C. modified with CROMMIXTM Acrylic Modifier

Tensile Strength (N/mm2)

Flexural Strength (N/mm2)

Compressive Strength (N/mm2)

Impact Strength (inch/pound)

Shear Bond (N/mm2)

Before

 

1.6

4.2

16.5

6.0

0.3

After

 

4.2

10.9

39.4

16.0

4.5

Slurry Coating

  • Portland Cement: 2 kg
  • Fine Sand: 1kg
  • Acrylic Modifier: 2L
  • Mix approximately: 3L
  • Coverage: 15m2(approx.)

Waterproof Render of Motar (min. 10mm thinckness)

  • Dry clean (clay free) sand: 120 kg.
  • Portland cement: 40kg.
  • Acrylic Modifier: 30L
  • Water: Min required
  • Approximate volume of mix: 93L
  • Coverage: 9.3m2 @10mm

Light Duty Granolithic Topping

  • Flooring sand: 40kg
  • Portland cement: 20kg
  • Acrylic Modifier: 9.6L
  • Water: Min required
  • Approximate volume of mix: 32L
  • Coverage: 5.3m2 @ 6mm
  • Coverage: 3.2m2 @ 10mm

Concrete Repair, Cement Render, Title Grouting, Tile Bedding

  • Sand: 40kg
  • Portland Cement: 20kg
  • Acrylic Modifier: 8L
  • Water: Min required
  • Approximate volume of mix: 30L
  • Coverage: 3m2 @ 10mm
  • Coverage: 5m2 @ 6mm

Underlayment Levelling Screed

  • Flooring sand: 120kg
  • Portland Cement: 40kg
  • Acrylic Modifier: 24L
  • Water: Min. required
  • Approximate volume of mix: 85L
  • Coverage: 14m2 @ 6mm
  • Coverage: 8.5m2 @ 10mm

Heavy Duty Granolithic Topping

  • Granite chips (3mm): 30kg
  • Flooring sand: 30kg
  • Portland Cement: 20kg
  • Acrylic Modifier: 9.6L
  • Water: Min. required
  • Approximate volume of mix: 40L
  • Coverage: 6.4m2 @ 6mm
  • Coverage: 3.2m2 @ 12mm

Application Guide.

 

Surface Preparation

  1. Substrate should be primed with a 1:1 mixture of Acrylic Modifier and Water.
  2. Brush on at the approximate rate of 6 - 12m2 / L.
  3. Allow to become tacky then apply topping.
  4. For porous surfaces prime with a slurry coat (refer Specifications for mix recommendation)

Application Procedure and Equipment

  1. Apply concrete and mortars as per normal practice.

Transport and Storage.

 

Sizes: 1L, 4L, 20L

Weights: 1.1kg, 4.5kg, 21.5kg

Dangerous Goods Class: N/A

Flash Point: N/A

UN Number: N/A

   

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