Curing requirements for concrete

Curing Methods for Concrete:

(1) Natural Conservation (commonly used in on-site construction): covering irrigation maintenance, film cloth maintenance, etc.

(2) Heat Treatment and Maintenance

2. Start of Natural Curing Time: Before Final Setting (typically 8-12 hours after pouring)

3. Concrete curing time requirements:

Concrete mixed with ordinary cement, slag Portland cement, and slag Portland cement (heat-resistant, steam-cured): 7d

Volcanic ash (fly ash) silicate cement concrete: 14d

(3) Concrete containing admixtures, mineral aggregates, or with requirements for impermeability: 14d

(4) Concrete with waterproofing (indoor, underground, seasonal, roof) and impermeability requirements: 14d

Large Volume Concrete: 14d

(6) Post-pour concrete: 14d

(7) Waterproof required post-tensioned concrete: 28d