Floor Preparation Project-HIGH-PERFORMANCE POLISHED CONCRETE FLOORING
Coarse Grinding & Surface Preparation
CONCRETE SURFACE PREPARATION (PRE-POLISHING)
Purpose: To transform a raw/coarse-ground concrete slab into a high-density, refined surface ready for final polishing.
TECHNICAL EXECUTION (PRE-POLISHING PHASE)
Step 1: Surface Leveling & Laitance Removal
Tooling: 16 / 30 Grit Metal-Bond Diamonds.
Action: Heavy grinding to remove the "laitance" (the weak, dusty top layer). This step levels high spots and ensures the floor meets industrial flatness standards.
Outcome: Exposure of a clean, solid concrete matrix with an open-pore structure.
Step 2: Scratch Refinement (Honing)
Tooling: 50 / 100 Grit Transitional Hybrid / Ceramic Pads.
Action: Using the planetary rotation of the HTG-820-RC, we removed the aggressive scratches left by the metal diamonds.
Importance: This is the most critical prep step; a smooth, scratch-free foundation is required before any polishing resin can be used.
Step 3: Grouting & Pore Filling
Method: Slurry Grinding.
Action: A specialized grout was applied and worked into the surface. This fills pinholes and minor cracks, creating a densified, "closed" surface that feels smooth to the touch.
Step 4: Chemical Densification (Hardening)
Agent: Lithium Silicate Hardener.
Action: Applied to the clean, honed surface to penetrate and react with the concrete.
Result: Permanent dust-proofing and a significant increase in surface Mohs hardness, allowing the floor to sustain a high-gloss "mirror" reflection in the next phase.
FINAL PRE-POLISH CONDITION
At the conclusion of this phase, the floor was:
Level & Flat: No "waves" or high joints.
Dense & Hard: Chemically strengthened to resist wear.
Smooth: Honed to a 200-grit matte finish, ready for the final polishing steps.
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