If water contacts the intermediate coat of epoxy floor paint 5 hours after application, it constitutes a major quality accident. At this point, the resin curing degree is less than 30%, and water penetration will trigger a chain destructive reaction. This guide provides a professional-level rescue plan to minimize losses to the greatest extent.

Threefold damage of water blisters to uncured floor paint

Interruption of chemical curing

Water dilutes amine curing agents, blocking the cross-linking reaction of epoxy groups, resulting in a permanent decrease in coating strength (with a measured compressive strength loss of 40%).

Disintegration of adhesion

A water film forms an isolation layer on the concrete base, destroying the mechanical anchoring effect, and the risk of subsequent hollowing increases by 300%.

Appearance defects

Capillary channels left by water evaporation (surface whitening)

Uneven curing causing cloud-like color differences (blossoming)

CO₂ dissolution forming bubble clusters

Four-level emergency response process

Step 1: Emergency drainage (initiate within 10 minutes)

Use a polyurethane water scraper to remove visible water (do not use metal tools for scraping)

Lay high-molecular water-absorbing plates in water seepage areas (water absorption ≥ 4L per 1㎡)

Step 2: Status diagnosis (30 minutes after drainage)

Damage symptoms Processing plan

Local whitening Infrared baking (50℃ for 2h) to accelerate water evaporation

Bubbles with diameter < 2cm Syringe suction + filling with epoxy repair paste

Large-area peeling/wrinkling Immediately 

Step 3: Scientific drying

When humidity > 65%, use a anti-condensation dehumidifier (maintain 45% RH)

Forced ventilation requires filtering particles (to avoid contaminants embedding into the paint surface)

Step 4: Repair construction

Grind the damaged area into a 30° slope interface

Apply epoxy penetrating primer to restore the base surface activity

Apply intermediate coat paint in layers (with an 8-hour interval between each layer)

After 72 hours of curing, conduct a water  test to check sealing performance

Preventive construction specifications

Environmental monitoring

Real-time monitoring of dew point temperature during construction (temperature difference for epoxy floor paint construction < 3℃)

Humidity warning value set at 75% (automatically pause construction if exceeding the standard)

Physical protection

Seal external wall openings with waterproof expansion sealant

Pre-lay drainage channel blankets on the ground (instant water absorption 10L/㎡)

Material upgrade

Select fast-curing epoxy intermediate coat paint (curing degree reaches 70% in 5 hours)

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