When pouring the cast-in-place board, the plastic film must be rubbed with the cover. In order to prevent the cracks in the cast-in-place board, the best measure is to follow the plastic film covered with the cover, but it is only allowed to cut out the way part of the line when the line is placed. The uniform fabric of the embellish mortar mortar: when the concrete is transported with a pump, the original pipe mortar must be dispersed evenly and not concentrated; because the strength of the mortar is low, the concentration of the mortar at one place will make the local strength low. When pouring the slab, the distribution area of the mortar is not less than 100, when pouring the wall column, not less than 50. According to the company's "pump operator's operation instruction".
Immediately sprinkle water or brush curing liquid after the concrete wall is dismantled: in spring, summer and autumn, a special person can be arranged for the concrete wall to be sprinkled for no less than 7 days. The daily sprinkler number is not less than 15 times, in the spring, the wind drying period should not be less than 24 times, and the night can not be interrupted. The brush curing solution should be used in winter. According to the requirements of "pre mixed concrete technical bottom" for pouring construction, the supplier should provide "pre mixed concrete technical bottom" to the buyer, and require the demand side technology and the constructors to study the foundation carefully. Change the condition of filing only information but not using it. The on-site dispatching and sales personnel should supervise the construction according to the requirements.
After the column is dismantled, the plastic film must be wrapped up immediately: wrapping the plastic film on the surface of the column is the best way to maintain the column concrete. It can protect the moisture in the concrete from outside evaporation to meet the hardened demand of concrete. The film can be removed when the plastering is needed. The concrete wall is maintained. Brush curing solution can also be used in spring, summer and autumn, but it should be ensured that the curing solution is a qualified product, that is, the film can be formed after washing the curing solution on the wall. For concrete maintenance, please refer to our company's "concrete maintenance special technical disclosure".