maintenance period
For ordinary cement, portland cement and slag cement, the curing period is at least 7 days; Adding retarder and impervious concrete, the curing period is extended to 14 days.
water conservancy
In the environment above 15℃, water should be poured every 3 hours during the day, twice at night and three times a day after pouring. In high temperature or dry climate, the watering frequency should be increased appropriately.
Moisture retention and curing of plastic film
By covering the plastic film, the concrete is isolated from the air, kept moist, and promoted the hydration of cement and the hardening of concrete. This method not only improves the construction environment, but also saves labor and water, and ensures the maintenance quality of concrete. Moisturizing curing can be divided into plastic sheet curing and spraying plastic film curing liquid curing.
Temperature limit
When the average temperature of the day is below 5 degrees Celsius, please stop watering to avoid affecting the hardening process of concrete.
Maintenance methods of different structures
For large-area structures such as floor slab and roof slab, it is suggested to store water for maintenance; For reservoir and other projects, water injection can be used for maintenance after the internal model is removed; For underground foundation engineering, covering soil is a good choice. Precast members and foundation works can be maintained by watering and covering soil.