The superfine cement grouting material in the late maintenance need to pay attention to what problem?

The superfine cement grouting material in the late maintenance need to pay attention to what problem? The superfine cement grouting material need maintenance immediately after grouting, concrete curing conditions are as follows: • winter construction, should press when the average temperature is less than 5 ° C winter construction and meet the following requirements: 1. Measures should be taken to preheat before grouting foundation surface, and clear water. 2. Before the cold, cement grouting material compressive degree is not less than 5 mpa. Grouting, high temperature climate environment construction site temperature is greater than 35 ° C, by high temperature climate should suspend construction and meet the following requirements: 1. 24 h before the grouting measures to protect the grouting parts from direct sunlight or other heat radiation. 2. Take appropriate measures to cool, contact with cement grouting material and equipment of the concrete foundation slab temperature should not be greater than 35 ° C. 3. The slurry into the mould temperature should not be greater than 30 ° C. 4. Measures should be take timely moisture curing after grouting. The superfine cement grouting material winter maintenance need to prepare the material: quilts, thin film materials are mainly in order to maintain a constant because winter temperature is too low, so we need to prepare for insulation protection, summer maintenance need to prepare the material: film, film is aimed to protect wet, early prevention and control of water erosion causes product grouting inside not solid, the other must regularly sprinkler, sprinkler is to protect wet, because internal reactions need a lot of water after grouting.