SikaSet®-45
SikaSet®-45 is a 1-component, very rapid-setting, early-strength gaining, magnesium phosphate-based patching and repair mortar for concrete.
- Very rapid hardening as defined by ASTM C928
- Freeze/thaw resistant
- Easy to use; economical patching and labour saving material
- No added chlorides
- Not gypsum-based
- High early-strength
- Very fast-setting
- Open to foot traffic in 45 minutes, to vehicle traffic in 1 hour at +23 °C (73 °F)
- Easily applied to clean, sound substrates
- Not a vapour barrier
Usage
- Bridge deck and highway overlays and repairs
- Concrete joint repairs
- Structural repair to concrete parking structures, dams
- Full depth patching repairs
- Horizontal repairs of concrete and mortar
- Formed wall and marine structure repairs
Advantages
- Very rapid hardening as defined by ASTM C928
- Freeze/thaw resistant
- Easy to use; economical patching and labour saving material
- No added chlorides
- Not gypsum-based
- High early-strength
- Very fast-setting
- Open to foot traffic in 45 minutes, to vehicle traffic in 1 hour at +23 °C (73 °F)
- Easily applied to clean, sound substrates
- Not a vapour barrier
Packaging
22.7 kg (50 lb) bag
Colour
Powder / Concrete Grey
Product Details
APPROVALS / CERTIFICATES
- Approved by the Ministère des Transports du Québec (MTQ)
- Approved by the Ontario Ministry of Transportation and is qualified by The Road Authority (TRA)
- Product recognized by the British Columbia Ministry of Transportation (BC MoT)
- Meets Alberta Transportation (AT B391) specification for patching materials (both LTH and HEH approved)
Shelf Life
12 months in original, unopened bag.
Storage Conditions
Store dry, ensuring that product is not exposed to rain, condensation or high humidity. For best results, condition product at temperatures between +18 °C and +29 °C (65 °F and 84 °F) before using.
Soluble Chloride Ion Content
| Chloride Resistance | @13 mm depth = 0.04 % |
| Chloride Content | @25 mm depth = 0.02 % |
Chloride Content (ASTM C1152) by mass of mortar = 0.011 %
Compressive Strength
| Mortar ASTM C109 | +3 °C (37.4 °F)* | +23 °C (73 °F) |
| 1 hour | - | 39 MPa (5 656 psi) |
| 3 hours | - | 40 MPa (5 801 psi) |
| 1 day | 33 MPa (4 786 psi) | 42 MPa (6 091 psi) |
| 3 days | 44 MPa (6 381 psi) | 45 MPa (6 526 psi) |
| 7 days | 50 MPa (7 250 psi) | 51 MPa (7 397 psi) |
| 28 days | 61 MPa (8 887 psi) | 65 MPa (9 427 psi) |
Shrinkage
| 60 days | No cracking |
| 90 days | - 0.017 % |
Water Absorption
| 6.8 % @ 14 days | (specification B391) Alberta Transportation |
Application
Mixing Ratio
1.9 L (4 pints) of water per bag
Layer Thickness
10 – 50 mm
Ambient Air Temperature
Minimum: 0 °C / Maximum: +35 °C
Substrate Temperature
Minimum: 0 °C / Maximum: +35 °C
Initial Set Time
| 10 – 20 minutes | (ASTM C266) (Modified) |
Final Set Time
| 15 – 25 minutes | (ASTM C266) (Modified) |
Waiting Time / Overcoating
Approx. 15 minutes after adding powder to the water
Yield
Approx. 11 L (0.39 ft3)
Approx. 16.4 L (0.58 ft3)* when extended with up to 13.6 kg (30 lb) of 10 mm (3/8 in) dry pea gravel
*Warning : Do not use limestone aggregate.
MIXING
Water content is critical, use a maximum of 1.9 L (4 pints) of water per 22.7 kg (50 lb) bag of SikaSet®-45. Mechanically mix in an appropriately sized mortar mixer. Wet down tools and mixer to be used. Pour clean (potable) water into the mixer. Add aggregate, if extending the unit for deep patches. If aggregate is damp, lower the water proportion accordingly. Add the SikaSet®-45 powder to the mixer and mix for 1.5 to 2 minutes. Following this sequence will ensure consistent and uniform batches. SikaSet®-45 should be mixed, placed and finished within 10 minutes [+20 °C (68 °F)] from the time that the powder is added to the water.
Use neat material for patches from 13 to 38 mm (1/2 to 1 1/2 in) deep. For application greater than 38 mm (1 1/2 in) in depth, add up to 15 kg (33 lb) of 10 mm (3/8 in) coarse aggregate. The aggregate must be non-reactive (as per ASTM C1260, C227, and C289), clean, well graded, oven-dried, have low absorption, high density and comply with ASTM C33, size number 8 per table 2.
Note: The addition rate of 13.6 kg (30 lb) of coarse aggregate increases the unit yield to approx. 16.4 L (0.58 ft3).
APPLICATION
A scrub coat should be applied prior to placement of mortar. Apply a 3 mm (1/8 in) thick scrub coat of SikaSet®-45 into the substrate, filling all pores, voids and edges. Onto the fresh scrub coat, force the mortar against the edge of the repair area or onto the resurfacing site, working towards the centre and observing minimum and maximum layer thicknesses. After filling repair, screed off excess. Allow concrete to set to desired stiffness, then finish. To control setting times, cold water should be used in hot weather and hot water in cold weather.
CURING TREATMENT
SikaSet®-45 should air cure for proper curing, but should be protected from rapid moisture loss during first three (3) hours. To do so, a liquid curing compound or polyethylene can be used, as well for protecting fresh SikaSet®-45 from rain. Never wet cure SikaSet®-45.
CLEAN UP
Clean all tools and equipment immediately after use with water. Once hardened, material can only be removed manually or mechanically.