Sprinkler curing refers to covering fresh concrete with materials with strong water absorption and heat preservation ability (such as straw curtains, sawdust, sacks, reed mats, etc.). ), and sprinkle water on it to keep it moist. After concrete pouring, it shall be covered and cured within 12h. The duration of sprinkler maintenance depends on the functional requirements of cement varieties and structures.

Concrete mixed with ordinary portland cement or slag portland cement shall not be less than 7d; Concrete with retarding admixture or impermeability requirements shall not be less than 14d.

Watering times should keep the concrete moist. Concrete curing water should be the same as mixing water. When the average temperature of the day is below 5℃, watering is not allowed.

Extended data

During the construction of cement stabilized soil structure layer, the following provisions shall be observed:

(1) clods should be crushed as much as possible, and the maximum size of clods should not be greater than15 mm.

(2) the ingredients should be accurate.

(3) During road mixing construction, cement should be spread evenly.

(4) Sprinkle water and mix evenly.

(5) The thickness and elevation of base course should be strictly controlled, and the transverse slope of road arch should be consistent with the surface course.

(6) When the mixture reaches or is slightly higher than the optimum water content (when the climate is hot and dry, the base mixture can be 1%~2%), it shall be compacted to the following required compactness (minimum requirement) determined by the heavy compaction test method.

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