You can also use sprinkler maintenance methods such as covering old sacks, straw bags, straw curtains and straw that can store water (but not too early, otherwise there will be traces of sacks on the road). For large-area, high-speed slipform paving, the methods of confining water, covering sand and sprinkling water are not suitable. The pavement sprayed with curing agent or with anti-skid structure must be protected by special personnel, and it is forbidden for people, livestock and vehicles to damage the pavement. After reaching 40% of the design strength, pedestrians and bicycles can be allowed to pass after the maintenance cover plate is removed. The curing method of spraying curing agent is adopted, and the spraying thickness of spraying agent must ensure curing and film formation. The variety and dosage of spraying agent should be selected according to ASTM standard experimental method, and the water retention rate should be ≥85%. Curing agents with unqualified water retention rate or affecting the strength of cement concrete should not be used.
The general dosage of curing agent is about (3 ~ 4) m2 of pavement per kilogram of stock solution. When using plastic film for curing, its thickness (toughness) should be appropriate, and the butt joint length of two films should not be less than1m. The plastic film must be tightly covered on the road surface in the field to prevent the suspension from being blown up by the wind. When using plastic film to spray water for maintenance, it is necessary to spray water in time, and the frequency of spraying water should be based on the weather conditions to ensure that the plastic film is always wet during the maintenance process: spray water 1 ~ 2 times a day on cloudy days; Sprinkle water 2 ~ 3 times a day on sunny days. Covering curing period is at least 7d. People should not step on the anti-skid structure of the road when laying mulch on the road, nor should people, livestock, bicycles and vehicles step on the road.