Cementitous Grouts - SikaGrout®-428 FS
High performance, fast setting, non-shrink, cement grout
SikaGrout®-428 FS is a non-shrink, non-metallic, cementitious precision grout powered by ViscoCrete technology. SikaGrout®-428 FS is designed to achieve high early strength and exceptional ultimate strengths at a fluid consistency. A structural, precision grout, SikaGrout®-428 FS can be placed from plastic to fluid over a temperature range.
- Quick rate of strength gain
- Multiple fluidity with one material
- Outstanding performance in fluid state
- Excellent fluidity, sufficient time for placement
- Non-metallic, will not stain or rust
Usage
- For quick turnaround applications, when rate of strength gain is a significant consideration.
- Grouting of railing posts, foundations, windmills, compressors, etc.
- Non-shrink grouting of machinery and equipment, base plates, sole plates, precast panels, beams, columns and curtain walls.
- Applications where a non-shrink grout is needed for maximum effective bearing area.
- To transfer optimum load.
- For grouting rebar, bolts, dowels and pins, etc.
Advantages
- Quick rate of strength gain
- Multiple fluidity with one material
- Outstanding performance in fluid state
- Excellent fluidity, sufficient time for placement
- Non-metallic, will not stain or rust
Packaging
65 lb (29.5 kg) bag
Color
Gray powder
Product Details
Sustainability / Certifications / Approvals
APPROVALS / STANDARDS- Meet ASTM C-1107 (Grade C)
- Shows positive expansion as per ASTM C-827
Product Information
Shelf Life12 months from date of production if stored properly in original, unopened and undamaged sealed packaging
Storage ConditionsStore dry at 40-95 °F (4-35 °C)
Protect from moisture. If damp, discard material
Technical Information
Application
Application Information
Product Temperature65-75 °F (18-24 °C)
Ambient Air Temperature> 40 °F (4 °C)
Substrate Temperature> 40 °F (4 °C)
Pot Life~ 10 minutes
As the temperature will affect the pot life, application temperature:
Consumption
Coverage0.50 ft3 (0.02 m3) per bag
(Coverage figures do not include allowance for surface profile and porosity or material waste)
Application Steps
MIXING- Make sure all forming, mixing, placing, and clean-up materials are on hand.
- Add the appropriate amount of water (depend on the desired flow) of clean potable water (approx 70 °F) into a suitably sized and clean mixing container, using a calibrated measuring jug, or similar, to ensure strict control of the water content (do not over-water).
- Add 1 bag while continuing to mix with a low-speed drill (400-600 rpm) and Sika mixing paddle or a jiffy paddle or in an appropriate mortar mixer.
- Once all the powder has been added, mix for approximately 3 minutes, until a lump-free and uniform consistency is achieved.
- Do not over mix.
- For warmer temperatures use cold water and for colder temperatures use warm water.
- For cold temperature start with 7/8 of a gallon and add remaining 1/8, only if needed for fluid consistency.
- Refer to ACI 306 Guidelines when there is a need to place this grout in cold & hot temperatures.
EXTENSION WITH AGGREGATES
- For deeper applications, SikaGrout®-428 FS may be extended with 3/8" (9.5 mm) pea gravel (plastic and flowable consistencies only).
- The aggregate must be non-reactive (reference ASTM C-1260, C-227 and C-289), clean, well graded, Saturated Surface Dry (SSD), have low absorption and high density, and comply with ASTM C-33 size number 8 per Table 2.
- Variances in aggregate may result in different strengths.
- The addition rate is 30 lb (13.7 kg) of aggregate per bag. It is approximately 2.4 gal (9.1 L) by loose volume of aggregate.
APPLICATION- Within no more than 10 minutes after mixing, place grout into forms in normal manner to avoid air entrapment.
- Mixed grout in mass will result in faster than expected setting times.
- Plan jobs accordingly so that the grout can be placed right after mixing.
- Vibrate, ram grout as necessary to achieve flow or compaction.
- SikaGrout®-428 FS must be confined leaving minimum exposed surface.
- After grout has achieved final set, remove forms, trim or shape exposed grout shoulders to designed profile.
- Wet cure for a minimum of 3 days or apply a water based curing compound which complies with ASTM C-309 on exposed surfaces.
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