What Are The Key Processes For Moisture-proof Treatment Of Anti Slip Terrazzo in Bathrooms?

The key process of anti-static terrazzo in bathroom moisture-proof treatment needs to revolve around base treatment, moisture-proof layer construction, material selection and construction control, anti-skid treatment, and post maintenance. The specific process points are as follows:

1, Grassroots treatment: laying the foundation for moisture prevention
Cleaning and repairing
Thoroughly remove any floating slurry, oil stains, dust, and loose particles from the surface of the base layer to ensure that there is no visible water residue.
Repair defects such as cracks and holes by filling them with high-strength repair materials (such as epoxy mortar) to avoid water infiltration paths.
Roughness treatment
Polish or chisel the concrete base to increase surface roughness, enhance the bonding strength between the terrazzo layer and the base, and prevent moisture failure caused by hollowing.
2, Moisture proof layer construction: block moisture infiltration
Apply moisture-proof coating
Apply specialized moisture-proof coatings (such as polyurethane waterproof coatings, cement-based permeable crystalline waterproof coatings) on the surface of the base layer to form a continuous waterproof film, effectively blocking the rise of underground water vapor.
The coating should be uniform, with a thickness that meets the product requirements (usually ≥ 1.5mm), to avoid omissions or accumulation.
Additional layer of waterproofing membrane (optional)
Add an additional layer of waterproofing membrane at the leakage prone areas such as bathroom floor drains and pipe roots to enhance local moisture resistance.

3, Material selection and construction control: Ensure equal emphasis on moisture and slip resistance
Selection of anti-static terrazzo materials
Conductive material: Incorporating conductive fibers (such as carbon fiber) or conductive powders (such as graphite) to ensure that the surface resistance of terrazzo meets anti-static requirements (usually ≤ 1 × 10 ⁶ Ω).
Moisture resistant additives: Use hydrophobic cement-based materials or add waterproofing agents to reduce the water absorption rate of terrazzo (recommended ≤ 5%) and enhance its impermeability.
Anti slip aggregate: Quartz sand, granite fragments, and other materials with moderate roughness are used as aggregates to improve the surface friction coefficient while avoiding a decrease in anti slip effect caused by overly fine aggregates.
Construction process control
Installation of dividing strips: Install dividing strips (such as copper strips, glass strips) according to the design pattern, ensuring that the dividing seams are straight and firmly embedded to prevent cracks caused by shrinkage deformation.
Stone slurry paving:
Control the consistency of the stone slurry (≤ 60mm), evenly spread the thickness (10-15mm), and avoid local thickening or thinning.
Both sides and corners of the dividing strip should be flattened and compacted to prevent hollowing.
Rolling and smoothing: Use a roller to compact and eliminate bubbles, then use an iron trowel to smooth the surface, ensuring that the surface flatness deviation is ≤ 2mm.
4, Anti slip treatment: enhances safety during use
Surface rough grinding and anti slip agent treatment
Maintain appropriate roughness during the rough grinding stage (60-80 # grinding wheel) to enhance anti slip performance.
After the construction is completed, apply a special terrazzo anti slip agent to increase the surface friction coefficient through chemical action while maintaining moisture resistance.
Slope design
The bathroom floor should have a reasonable slope (≥ 1%) to ensure smooth drainage and avoid long-term soaking of the moisture-proof layer due to water accumulation.
5, Post maintenance: Consolidate moisture resistance effect
Moisturizing maintenance
After construction is completed, cover with plastic film or wet burlap bags to keep the surface moist. The curing time should be ≥ 7 days to promote cement hydration and reduce shrinkage cracks.
Wax sealing
After the maintenance period is over, apply waterproof wax or epoxy resin coating to seal the surface pores, further reduce water absorption, and improve anti slip glossiness.
6, Quality acceptance standards
Moisture resistance:
Water absorption rate ≤ 5% (tested according to the "Code for Acceptance of Construction Quality of Building Ground Engineering" GB50209).
There is no leakage after 24 hours of closed water test.
Anti slip performance:
Friction coefficient ≥ 0.6 (under wet conditions).
Appearance quality:
The surface is flat, without cracks or sand holes, the dividing strips are straight and clear, and the color is uniform and consistent.