Some tips for your paver making 路面砖生产的小技巧
a. Base mix materials:
-Sands
-Crushed fine aggregates
-Aggregates
-Cement
-Water
b. Face mix materials
-Sands
-Cement
-Pigment
2. How you chose the material, and what is affects?
a. BASE MIX MATERIAL:
-Sands:
Type: River sand
Size:1-2.5mm
Functions: fillers,
Effect: ↓Viscosity, ↑compaction index, Fine texture
-Crushed fine aggregates:
Type: Similar to granite
Size:<5mm
Functions: middle size structural skeleton
Effect: ↑Viscosity, ↑compaction index
-Aggregates:
Type: Similar to granite
Size: ~10mm
Functions: Main skeleton, ↑ strength sharply
Effect: ↑Viscosity, ↓compaction index, coarse texture
-Cement
Type: OPC/Fly ash cement (>425)
Functions: Binder (C-S-H), Critical on strength
Effect: ↑Viscosity, ↑compaction index, sensitive to water
Phase III after 12Hr mixing time:
Cement with water<5mins
Mixture in the hopper<20mins
-Water:
Type: Tape water
Functions: Hydration with cement, lubrication
Effect: More ↑compaction index & ↑ Viscosity
Less ↓compaction index & ↓ Viscosity
b. FACE MIX MATERIAL:
-Surface sands
Size<2mm
Type: River sand
-Cement
Type: White and grey cement
White cement: Color
-Pigment
Type: Iron oxide, CrOx
P.s.: Anti oxidizing agents & Anti UV
3. What you should notice during the mixing time?
a. Mixing method (in order)
-Aggregate mixing
-Dry Mixing (+ cement)
-Wet mixing (+water)
Note: Mixing time should be less than 5 mins after adding water.
Long mixing is not good for making the products.