How to Mix Phoscrete F1-HC: Step-by-Step Instructions

What You’ll Need

• Phoscrete F1-HC Dry Mix (bag)
• Phoscrete F1-HC Liquid Activator (jug)
• Clean, dry mixing bucket (5-gallon minimum)
• Heavy-duty drill with mixing paddle or auger
• Measuring scoop (for admixtures, if needed)
• Clean trowels and finishing tools
• Personal protective equipment (gloves, safety glasses, dust mask)
• Ice/cooler (for activator in warm weather)
• Hot water (for activator in cold weather)

Step-by-Step Mixing Instructions

1. Pre-Check & Preparation

• Inspect labels: Always check the “use by” date on both the dry mix and activator. Do not use expired materials.
• Condition materials: For best working time, store dry mix in a cool, dry place.
  • In hot weather: Chill activator to 40°F (5°C) using ice/cooler.
  • In cold weather: Warm activator in hot water (do not boil).
• Dry substrate: Ensure the repair area is clean and dry (Phoscrete bonds best to dry, not SSD, concrete).

2. Add Activator First

• Pour the entire contents of the Phoscrete F1-HC liquid activator jug into the empty mixing bucket.
• Never add water—use only the supplied activator.

3. Add Dry Mix

• Gradually add the entire bag of F1-HC dry mix into the bucket while starting the mixer on low speed.

4. Mix Thoroughly

• Use a heavy-duty drill with a paddle or auger to mix for at least 1 minute.
• Scrape the sides and bottom of the bucket once during mixing to ensure all powder is wetted.
• The mix should be smooth, lump-free, and uniform in texture. No dry powder should remain.

5. Add Admixtures (Optional)

• If required (e.g., for very hot or cold weather), add the appropriate number of scoops of Phoscrete Fast-Set (for cold) or Slow-Set (for hot) admixture to the activator before adding dry mix.
• See the Admix usage chart for correct dosing.

6. Place Immediately

• Pour or trowel the mixed Phoscrete F1-HC into the prepared repair area without delay.
• Typical working time: 5–15 minutes (temperature dependent).
• Do not wait—Phoscrete sets fast!

7. Clean Up

• Phoscrete mixes clean and generally does not stick to tools or buckets.
• After the final batch, rinse tools and buckets with water.
• Clean hands with soap and water.

Pro Tips

• For large repairs: Mix multiple kits in a mortar mixer (in cold weather) or use a continuous-feed mixer.
• For warm weather: Keep activator and tools out of direct sunlight until use.
• Never add water: Adding water will compromise strength and durability.
• Check your finish: Place and finish in lifts if the repair is deep; Phoscrete bonds to itself with no cold joints.

Common Mistakes to Avoid

• Using expired or improperly stored material.
• Adding water or partial kits.
• Under-mixing or over-mixing.
• Waiting too long to place after mixing.
• Not cleaning slurry from saw cuts before placement.

Need More Help?