Color steel plate is a very common building material used in building construction. When we carry out on-site construction of color steel plate, we also need to master the corresponding construction techniques, including the impact of weather on color steel plate construction, and different measures should be taken when using color steel plate according to different weather conditions. Below, we will learn in detail about the construction measures of color steel plate in rainy season.
1. Rainproof measures
Arrange dedicated personnel to timely understand weather forecasts and grasp rainy weather data in advance. Assign a dedicated person to conduct on-site inspections and management before the rain. For areas that do not comply with rain protection measures or have non-standard measures, subcontractors must be ordered to rectify within a specified time limit. Especially for lightning protection measures, a comprehensive inspection must be conducted carefully and meticulously.
1.1 Template rainproof measures
1. When stacking templates, the bottom layer must be elevated above the ground to prevent damage from rainwater immersion. Effective ground drainage measures must be taken at the template stacking area to prevent rainwater from accumulating.
2. Before it rains, be sure to cover the formwork and wooden back ribs effectively with plastic sheeting in a timely manner.
3. When constructing formwork on rainy days, it is necessary to leave cleaning ports or water outlets for beam and wall formwork. After the formwork release agent is applied, it should be covered with plastic cloth in case of rain to prevent the isolation layer from being washed away by rainwater. The template isolation layer that has been washed away by rainwater must be repainted before the mold is closed.
1.2 Rainproof measures for steel bars
1. Cover the steel bars that have been placed on site for a long time with rain to prevent serious corrosion. The steel reinforcement stacking site must have good drainage to prevent rainwater from accumulating, soaking, and rusting the steel reinforcement.
2. In principle, steel bar welding should be stopped on rainy days. In case of special circumstances during welding, rainproof measures must be taken to prevent rainwater from wetting the welding joints and causing changes or decreases in the mechanical properties of the steel bars, which may affect the quality of the process.
1.3 Concrete rainproof measures
Do a good job in pumping water from the aluminum fluoride plant,
1. When encountering heavy rain, concrete pouring should be stopped to keep the construction joints in a reasonable position, and on-site drainage work should be done well. The concrete in the poured area must be covered with plastic cloth in a timely manner to prevent changing the mix proportion of the concrete, reducing the strength grade of the concrete, and affecting the quality of the project.
2. Before pouring concrete, it is necessary to clean the dirt and accumulated water inside the formwork before pouring concrete.
3. Before pouring concrete, it is necessary to accurately grasp the weather forecast to avoid heavy rain during pouring, and sufficient rainproof materials should be prepared on site for covering in case of sudden rain during pouring.
4. During rainy season construction, it is required that the concrete mixing plant adjust the water consumption of concrete in a timely manner according to the actual moisture content of sand and stone to ensure the quality of concrete. When pouring on rainy days, it is required to appropriately reduce the slump of the concrete leaving the factory.
1.4 Rainproof measures for steel structures
1. To ensure the normal progress of construction during the rainy season and guarantee the quality of the project. The main processes and climate sensitive processes of this project should be designed with corresponding process measures based on the characteristics of rainy season construction.
2. High strength bolts cannot be installed on rainy days, and there should be no rainwater on the friction surface and high-strength bolts.
3. When the weather is harsh during the rainy season and cannot meet the process requirements or ensure safe construction, construction should be stopped.