Sika Ag · SIX:SIKA
Sika — Technical Presentation (August 2022)
21 slides from Sika's technical presentation, August 2022
Slide 1: Sikacrete 321 FS Application Instructions
Construction Sikacrete 321 FS Application Instructions Sika Corporation
Slide 2: Sikacrete 321 FS product description
Construction Sikacrete 321 FS One-component. Fast setting concrete mix. Portland –cement concrete containing factory blended coarse aggregate designed for quick turnaround patching and overlay needs. Sika Corporation
Slide 3: Where to use
Construction Sikacrete 321 FS Where to use: • On grade, above, and below grade on concrete. • On horizontal, vertical and overhead surfaces when formed and pumped or poured. • Full depth repairs. • Filler for voids and cavities. • As a structural repair material for: – Parking facilities – Industr
Slide 4: Packaging and coverage
Construction Sikacrete 321 FS Packaging: • 65 lb. multi-wall bag. Coverage: • .50 cu. ft / unit. • 864 cu. inches per unit. Sika Corporation
Slide 5: Surface Preparation: Cementitious Substrates
Construction Surface Preparation Cementitious Substrates: • Should be clean and sound. • Remove contaminants and bond inhibiting materials from repaired area. • Obtain exposed/fractured aggregate surface ~1.0 to 1/8 inch profile (ICRI CSP 7 & above). • Substrate must be saturated surface dry (SSD)
Slide 6: Surface Preparation
Construction Surface Preparation Cementitious Substrates: • Surface should be cleaned and roughened to create a profile. Sika Corporation
Slide 7: Surface Preparation: Saw Cut
Construction Surface Preparation Saw cut around perimeter of repair area to achieve a minimum 3/8” shoulder. Eliminates feathered edges giving a clean repair transition Sika Corporation
Slide 8: Surface Preparation: Steel
Construction Surface Preparation Steel: • Remove all corrosion and contaminants from exposed steel. • Surface should be cleaned thoroughly by blast cleaning or other mechanical means. • Exposed steel should be cleaned to white steel. • If half of the diameter is exposed, chip behind bar, 3/4” mini
Slide 9: Steel Preparation
Construction Steel Preparation Steel should be cleaned to a bright metal finish. Sika Corporation
Slide 10: Tools Required
Construction Tools Required ½” Drill Motor Low speed drill 400-600 rpm Large mixing paddle Margin trowel Sika Corporation
Slide 11: Mixing
Construction Mixing Pour water into clean pail. Adjust water to achieve the required flow. Do not add more than 5 pints of water. Sika Corporation
Slide 12: Mixing
Construction Mixing Add Sikacrete 321 FS to pail with water already inside, while mixing continuously. Sika Corporation
Slide 13: Mixing
Construction Mixing 1. Slowly add powder. 2. Once all the powder is added mix for 3 minutes. 3. Do not add any more than the recommended liquid. Sika Corporation
Slide 14: Mixing
Construction Mixing 1. While mixing for 3 minutes stop at 1.5 min to scrape down the sides to insure all material is fully mixed. 2. Thorough mixing and proper proportioning is necessary. Sika Corporation
Slide 15: Application: Scrub Coat
Construction Sikacrete 321 FS - Application SSD the surface and scrub coat the repair concerte into the substrate filling all pores and voids. Sika Corporation
Slide 16: Application
Construction Sikacrete 321 FS + Application Apply Sikacrete 321 to the prepared area. Press concrete behind rebar and make sure the material is consolidated and compacted fully. Sika Corporation
Slide 17: Application
Construction Sikacrete 321 FS + Application Complete filling patch area. Work concrete from the center of the patch to the outside. Sika Corporation
Slide 18: Min / Max application thickness
Construction Min / Max application thickness Thickness • Min 1.0 inch • Max 8.0 inch Sika Corporation
Slide 19: Finish
Construction Sikacrete 321 FS Finish Ensure good intimate contact with the substrate is achieved. Materials should be scrubbed into the substrate or other suitable means should be employed such as vibration of the materials. Vibrate form while pouring. Finished as desired. Sika Corporation
Slide 20: Curing
Construction Sikacrete 321 FS Curing Cure as per ACI recommendations. Curing is required. Moist cure with wet burlap and polyethylene, a fine mist of water or water based curing compound Moist curing should commence immediately after finishing. Protect newly applied material from direct sun
Slide 21: Sika Product Data Sheets
Construction Sikacrete 321 FS Sika Product Data Sheets can be obtained via: www.sikaconstruction.com Refer to data sheets for specific information on each Sika product. Sika Corporation