Common Problems And Protective Measures For Anti-static Terrazzo Damaged in Acidic And Alkaline Environments

Common problems and protective measures for anti-static terrazzo damaged in acidic and alkaline environments

1, Frequently Asked Questions

1. Surface corrosion

Chemical reaction: Acid and alkali substances react with cement components in terrazzo, such as Ca (OH) ₂, Fe ₂ O3, Al ₂ O3, resulting in surface crystallization, alkalization, or corrosion.

Case study:

After contact with strong acids (such as oxalic acid, hydrochloric acid) or strong bases (such as toilet cleaner, bleach), terrazzo may turn white, yellow, black, or pitted.

Ammonia and salt in urine corrode inorganic terrazzo, especially in humid environments such as bathrooms.

Structural damage: Acid alkali erosion enlarges internal microcracks and capillary pores, reducing strength and durability; Long term exposure to acid rain or polluted environments may cause weathering and freezing damage (freezing and swelling after absorbing water).

2. Color and appearance changes

Color difference issue: Differences in batches of natural stone aggregates or cement lead to color differences; Organic resin based terrazzo may turn yellow due to resin aging or UV irradiation.

Pollution accumulation: Surface roughness can easily adsorb dust, accelerate wear and affect aesthetics.

3. Physical damage

Local damage: Local damage caused by dragging heavy objects or contact with high-temperature objects (such as welding slag).

Increased wear: After acid-base corrosion, the surface becomes rough and the wear resistance decreases.

2, Protective measures

1. Material selection and construction

Corrosion resistant materials:

Choose epoxy resin, PVC flooring or stainless steel materials as base or bonding materials, avoiding ordinary cement slurry.

Using inorganic conductive phase material formula to enhance the chemical stability of anti-static terrazzo.

Construction specifications:

Do a good job in basic waterproofing to prevent water infiltration from causing alkali leaching.

Immediately apply conductive (anti-static) liquid floor wax or sealant (such as silane protective agent, lithium based curing agent) after construction, fill the pores, and improve impermeability and hardness.

2. Surface protection treatment

Sealing compound and wax layer:

Apply sealant 7-14 days after construction, and reapply every 1-2 years; Commercial premises are protected with water-based hard wax every quarter.

The resin base surface is coated with polyurethane sealant or epoxy gloss paint to form a transparent wear-resistant film.

Grounding system: Ensure that the anti-static grounding is connected to the building grounding, with a resistance value not exceeding 1 ohm.

3. Daily maintenance

Cleaning standards:

Use neutral detergent (pH 7-8) for cleaning, avoiding acidic and alkaline cleaning agents.

Timely clean liquid stains (such as oil stains, urine) to prevent penetration.

Environmental control:

Lay dust removal mats in high-frequency usage areas (such as entrances and exits) to reduce the introduction of abrasives.

Install dehumidification equipment in humid environments and control humidity below 60%.

It is prohibited for high-temperature objects (such as welding slag) to come into direct contact with the ground. Resin based materials typically have a temperature resistance of less than 80 ℃.

4. Repair and refurbishment

Partial damage repair:

Polish the damaged area, apply interface agent, fill and polish with materials of the same specification.

Large area wear treatment:

After overall grinding, reapply sealant or wax layer, with a cost of about 30% -50% of the new construction.

5. Regular inspections and adherence to standards

Performance verification: According to the "Requirements for the Use and Maintenance of Conductive (Anti static) Grounds", regularly verify whether the pole to ground resistance meets the requirements.

Usage change management: Re evaluate anti-static performance when modifying usage to ensure compliance with new environmental standards.

3, Conclusion

The problem of damage to anti-static terrazzo in acidic and alkaline environments can be effectively solved through material optimization, surface protection, standardized maintenance, and environmental control. Key measures include selecting corrosion-resistant materials, timely application of protective layers, use of neutral cleaning agents, control of acid-base contact, and regular repairs. These measures can extend the service life of terrazzo, maintain its anti-static performance and appearance quality, and are suitable for high demand places such as electronics, chemical engineering, and laboratories.