Product Data Sheet Show all documents
SikaQuick® Set-45

SikaQuick® Set-45

(former MEmaco T 545)

Very rapid-setting, chemical action mortar

SikaQuick® Set-45 is a one-component magnesium phosphate-based mortar for ambient and substrate temperatures below 29 °C (85 °F) .

  • Single component material, just add water and mix
  • Reaches 13.8 MPa (2000 psi) compressive strength in 1 hour to rapidly return repairs to service
  • Takes rubber tire traffic in 45 minutes
  • Wide temperature use ranges from below-freezing to hot weather exposures
  • Very low drying shrinkage for improved bond to concrete for repair and anchoring applications
  • Resistant to freeze/thaw cycles and deicing chemicals so it is usable in most environments
  • Air cure only, no wet curing compounds required
  • Coefficient of thermal expansion similar to Portland cement concrete for more permanent repairs
  • Higher sulfate resistance than conventional mortars
 
Product Data Sheet Show all documents

Usage

  • Interior and exterior
  • Horizontal and formed vertical or overhead repairs
  • Applications requiring high early-strength gain
  • Structural concrete repairs
  • Partial and full-depth repairs
  • Cold temperature repairs
  • Grouting applications such as anchor bolts, rebars, dowel rods, and precast applications

Substrates
  • Concrete
 

Advantages

  • Single component material, just add water and mix
  • Reaches 13.8 MPa (2000 psi) compressive strength in 1 hour to rapidly return repairs to service
  • Takes rubber tire traffic in 45 minutes
  • Wide temperature use ranges from below-freezing to hot weather exposures
  • Very low drying shrinkage for improved bond to concrete for repair and anchoring applications
  • Resistant to freeze/thaw cycles and deicing chemicals so it is usable in most environments
  • Air cure only, no wet curing compounds required
  • Coefficient of thermal expansion similar to Portland cement concrete for more permanent repairs
  • Higher sulfate resistance than conventional mortars
 

Packaging

22.6 kg (50 lb) polyethylene-lined bags

Product Details

Product Information

Composition / Manufacturing

Magnesium-phosphate mortar

Shelf Life

12 months when properly stored

Storage Conditions

Store in unopened containers in cool, clean, dry conditions

 
Technical Information

Compressive Strength

Time

Plain Concrete at 22 °C (72 °F)

SikaQuick® Set-45 at 22 °C (72 °F)

SikaQuick® Set-45 at 2 °C (36 °F) 

1 hour

-

13.8 MPa (2000 psi)

-
3 hours-34.5 MPa (5000 psi)-
6 hours-34.5 MPa (5000 psi)8.3 MPa (1200 psi)
1 day

3.5 MPa

(500 psi)

41.4 MPa (6000 psi)34.5 MPa (5000 psi)
3 days13.1 MPa (1900 psi)48.3 MPa (7000 psi)48.3 MPa (7000 psi)
28 days27.6 MPa (4000 psi)58.6 MPa (8500 psi)58.6 MPa (8500 psi)

Modulus of Elasticity in Compression

Time

SikaQuick® Set-45

7 days

28.8 GPa (4.18 x 106 psi)

28 days

31.4 GPa (4.55 x 106 psi) 

Tensile Strength in Flexure

1-day strength on 75 by 100 by 406 mm (3 in x 4 in x 16 in) prisms

SikaQuick® Set-45: 3.8 MPa (550 psi)

SikaQuick® Set-45 with 9 mm (3⁄8 in) pea gravel: 4.2 MPa (600 psi)

SikaQuick® Set-45 with 9 mm (3⁄8 in) crushed angular noncalcareous hard aggregate: 4.5 MPa (650 psi)

Coefficient of Thermal Expansion

Hot Weather coefficients*: 12.8 x 10−6 cm/cm/°C (7.15 x 10−6 in/in/° F)

(CRD-C 39)

*Determined using 25 mm x 25 mm x 279 mm (1 in x 1 in) bars. The test was run with neat mixes (no aggregate).

Freeze Thaw De-Icing Salt Resistance

Scaling resistance to deicing chemicals

5 cycles: 0

25 cycles: 0

50 cycles: 1.5 (slight scaling)

Sulfate Resistance

SikaQuick® Set-45 length change after 52 weeks: 0.09 %

Type V cement mortar after 52 weeks: 0.20 %

Freeze thaw resistance

80 % RDM at 300 cycles

(ASTM C666, Procedure A (modified**))

**Method discontinues test when 300 cycles or an RDM of 60 % is reached.

Application

Application Information

Initial Set Time

9-15 min at 22 °C (72 °F)

(Gilmore ASTM C266, modified)

Final Set Time

10-20 min at 22 °C (72 °F) 

(Gilmore ASTM C266, modified)
Consumption

Yield

Approx. 0.011 m3 (0.39 ft3) per 22.6 kg (50 lb) bag (mixed with the required water dosage) ; 60 % extension using 13 mm (½ in) rounded, sound aggregate produces approximately 0.016 m3 (0.58 ft3)
Application steps

SURFACE PREPARATION

  1. Concrete must be structurally sound and fully cured (28 days).
  2. Saw cut the perimeter of the area being repaired into a square with a minimum depth of 13 mm (½ in).
  3. Refer to current ICRI Guideline no. 310.2R for surface preparation requirements to permit proper bond.
  4. Any surface carbonation in the repair area will inhibit chemical bonding. Apply a pH indicator to the prepared surface to test for carbonation. If carbonation is present, abrade the surface to a depth that is not carbonated.

MIXING

  1. SikaQuick® Set-45 must be mixed, placed, and finished within 10 minutes in normal temperatures (21 °C [71 °F ]). Only mix quantities that can be placed in 10 minutes or less.
  2. Do not deviate from the following sequence; it is important for reducing mixing time and producing a consistent mix. Use a minimum 13 mm (½ in) slow-speed drill and mixing paddle or an appropriately sized forced-action mortar mixer.
  3. Pour potable water into mixer. Use a maximum 1.9 L (0.5 US gal) of water per 22.6 kg (50 lb)  bag of SikaQuick® Set-45. Do not deviate from the recommended water content.
  4. Add the powder to the water and mix for approximately 1–1½ minutes.
  5. Use neat material for repairs from 13–51 mm (½–2 in) in depth.

    

For deeper repairs, extend a 22.6 kg (50 lb) bag of SikaQuick® Set-45 by adding up to 13.6 kg (30 lb) of properly graded, dust-free, hard, rounded aggregate or non-calcareous crushed angular aggregate, not exceeding 13 mm (½ in) in accordance with ASTM C33, #8 (Test aggregate for fizzing with 10 % HCl). If the aggregate is damp, reduce the water content accordingly. Special procedures must be followed when angular aggregate is used. Contact your local Sika Technical Sales Representative for more information.

APPLICATION

  1. Immediately place the mixture onto the properly prepared substrate. Work the material firmly into the bottom and sides of the patch to ensure good bond.
  2. Level the SikaQuick® Set-45 and screed to the elevation of the existing concrete. Minimal finishing is required.

CURING TREATMENT

No curing is required but protect from rain immediately after placing. Liquid-membrane curing compounds or plastic sheeting may be used to protect the early surface from precipitations. Never wet cure SikaQuick® Set-45.

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