With the onset of winter, the temperature gradually decreases, and the snowflakes fall one after another, covering the earth in a layer of white silver. In this cold season, concrete construction also faces many challenges. Among them, pouring concrete after snow is a construction link that needs special attention.
First of all, it is necessary to understand some important points to pay attention to when pouring concrete after snowfall. Due to the low temperature, the moisture in the concrete is prone to freezing, resulting in the inability of the concrete to harden. Therefore, before pouring concrete, it is necessary to ensure that the formwork and steel bars do not have any debris such as ice and snow, so as not to affect the normal hardening of the concrete. At the same time, in order to prevent the concrete from freezing, the pouring should be carried out at the time of the day when the temperature is the highest, and avoid pouring in the early morning or night.
In addition, attention should be paid to controlling the water-cement ratio when pouring concrete. Because moisture is easy to freeze in winter, if the water-cement ratio is too high, it will lead to too much moisture in the concrete, which is easy to form ice crystals, which affects the strength of the concrete. Therefore, the water-cement ratio should be appropriately reduced to ensure the strength and stability of concrete.
In addition to these points, there are a few things to keep in mind. For example, the concrete should be fully mixed before pouring it to ensure the uniformity and stability of the concrete. At the same time, over-vibration or leakage should be avoided during the pouring process, so as not to cause concrete delamination or segregation. After the pouring is completed, it should be cured in time to keep the surface of the concrete moist and prevent the concrete from cracking or cracking.
To sum up, there are many matters that need to be paid attention to when pouring concrete after snowfall, and the construction unit and technical personnel need to fully understand and master. Only under the premise of strict compliance with construction specifications and requirements can the quality and safety of concrete construction be guaranteed.
In addition to the precautions mentioned above, there are some other issues that need to be paid attention to. For example, during construction in winter, attention should be paid to construction safety issues. Due to the low temperature, construction personnel are susceptible to cold invasion during operation, resulting in physical discomfort or operation errors. Therefore, the construction unit should take corresponding measures to ensure the health and safety of the construction personnel. For example, construction workers can be provided with warm clothing and equipment to protect them from the cold. At the same time, the construction unit should strengthen the management and supervision of the construction site to ensure that the construction process meets the relevant regulations and requirements.
In addition, during winter construction, it is also necessary to pay attention to the maintenance of concrete. Due to the cooler temperatures, the concrete will harden more slowly and require more curing time. Therefore, the construction unit should formulate a reasonable maintenance plan according to the actual situation to ensure the quality and stability of concrete. For example, concrete can be covered with insulation to maintain the temperature and humidity of the concrete surface. At the same time, the concrete should be regularly inspected and tested, and the existing problems should be found and dealt with in a timely manner.
In short, pouring concrete after snow is a construction link that requires special attention. The construction unit and technical personnel should fully understand and grasp the relevant points and precautions, and strictly abide by the construction specifications and requirements. Only in this way can the quality and safety of concrete construction be ensured and a solid foundation for the successful completion of the construction project.