What Should Be Done If The Glossiness Of Terrazzo Slabs Decreases After Long-term Use? How To Restore Brightness At Low Cost?

After long-term use, the glossiness of terrazzo slabs decreases. The brightness can be restored at a low cost through basic cleaning, grinding and repair, crystal surface care, sealing and curing, and daily maintenance should be combined to extend the effect. The following are specific methods and analysis:

1, Reasons for the decrease in glossiness
Surface wear: Long term use leads to wear of the grinding stone layer, an increase in small holes, and a decrease in light reflectivity.
Stain penetration: Oil stains, tea stains, etc. penetrate into the pores, forming stubborn stains that affect the luster.
Environmental erosion: Wet environments or chemical cleaning agents corrode surfaces, causing peeling or fading.
Construction defects: Insufficient polishing frequency, incomplete grouting or poor quality of polishing materials during the original construction.

2, Low cost steps for restoring brightness
1. Basic cleaning and stain treatment
Tools: Neutral cleaner, soft bristled brush, industrial vacuum cleaner.
Operation:
Remove surface dust, mud, and other debris.
Wet mop the ground with neutral cleaning agents and avoid using acidic or alkaline cleaning agents (which may corrode the surface).
For stubborn stains (such as oil stains and tea stains), use a small amount of detergent or specialized terrazzo cleaner for local treatment.
2. Grinding repair
Tools: Stone renovating machine, grinding disc (50 # -2000 #), industrial vacuum cleaner.
Operation:
Rough grinding: Use a 50 # grinding disc to remove the surface wear layer, expose a new layer, and clean with a vacuum cleaner.
Grouting: If the original construction grouting is not thorough, the holes need to be filled with wiping method to avoid residual holes caused by brushing method.
Fine grinding and precision grinding: Use 100 #, 200 #, and 500 # grinding discs step by step to polish, eliminate the previous level of grinding marks, and improve flatness.
Physical polishing: Use 1000 # and 2000 # grinding discs for high-precision polishing to enhance surface reflectivity.

3. Crystal surface care
Tools: Crystal face machine, specialized care agents for terrazzo (such as cement hardening mirror agent).
Operation:
Spray a small amount of care agent (about 10-15 grams) on the 1-2 square meter ground, and immediately use a crystal polishing machine to polish at a constant speed for 1 minute until the ground is bright and dry.
Repeat the process to form a thick, high brightness mirror layer.
Attention: After spraying the medicine, it should be immediately polished to avoid infiltration and erosion ("burning board"); Observe the reflection of the ground light during quick drying, increase the polishing speed appropriately, and collect the traces of edge medicine.
4. Sealing and curing (optional)
Tools: cement hardener, water scraper, plastic broom.
Operation:
Dilute the curing agent (1:5-1:7 mixed with water), spray it evenly on the ground, use a water scraper to push it evenly, keep it moist for at least 2 hours, and pour appropriate water for curing.
After drying thoroughly, use a 500 # grinding disc to polish and vacuum to enhance surface hardness (up to 7-8 levels) and impermeability (water penetration rate<0.9%).
Effect: Waterproof, stain resistant, oil resistant, acid and alkali resistant, extending service life.
3, Low cost techniques
DIY operation: If the area is small, equipment can be rented for self construction, saving labor costs.
Choose cost-effective materials:
Nursing medication: Select high-quality domestic brands, with a price of about 30-80 yuan/square meter.
Curing agent: Adjust the water ratio according to the age of the ground to reduce costs.
Partial repair: Only treat severely worn areas to avoid overall refurbishment.

4, Daily maintenance suggestions
Regular cleaning: Use a broom or vacuum cleaner to remove dust daily, and wet mop with neutral cleaner weekly.
Prevent stains: Clean oil, tea, coffee and other stains in a timely manner to avoid penetration.
Avoid collision: To prevent heavy objects from scratching the surface, dust mats should be placed at the entrance of the lobby.
Periodic care: Depending on the flow of people, crystal surface care or local repair should be performed every 3-6 months.