The objective conditions of the first sizing have a greater impact on the depth of solidification. For example, the construction environment, temperature and humidity have a relatively large impact on the curing speed. If the temperature is too low, excessive humidity will slow down the deep curing. In addition, there is ventilation at the construction site. If the air circulation is not smooth, it will affect the deep curing. In addition, the design of the rubber joint has a great influence on the deep curing. When the seam width is not appropriate or the depth is too deep, the deep curing will be slower; in general, the deep curing is slightly slower, and in the absence of quality problems (such as blistering, internal curing, etc.) The impact period of the test specimens specified by the national standard is 21 days, and the test specimens are equivalent to the thickness of the sizing in the actual project. That is to say, the full curing time determined by the national standard takes 21 days, and the curing of our reaction is slow. 21 days (generally more than 5-7 days is reflected as slow drying); in addition, we believe that curing the sealant too fast is not very good for long-term use, because curing too fast is not conducive to releasing the stress caused by the temperature during the curing process, exists Hidden dangers. If the curing time of concrete is limited, if it is too fast, it will lead to stress concentration and cracking.