1. General measures

1. For winter construction, all preparations must be completed before November 10 to meet the conditions of entering the winter period.

2. Organize related tools, chemical exterior agents and insulation materials in advance according to the physical workload.

3. The water supply pipeline at the construction site should be kept insulation and anti -freezing measures in advance. The horizontal pipeline part is deeply buried. The vertical pipeline is wrapped in thermal insulation material to prevent the pipeline from freezing and freezing and affecting production. Water on the surface, and flat the venue and road.

4. Arrange special personnel for meteorological collection and temperature measurement work, and immediately report the abnormal conditions; and strengthen the temperature measurement and records of temperature, concrete, mortar, etc. on the construction site.

5. A comprehensive inspection of water supply, power supply, anti -virus, and waterproof measures at the entire construction site to eliminate hidden dangers.

6. Timely convey the daily weather conditions to the construction management personnel to prevent the cold of the cold current. Prepare preparations in time.

2. Precautions for concrete winter construction

1. Before the construction of concrete engineering, the necessary heat work should be performed to guide the construction.

2. When the raw materials are heated, the mixing and co -use should be added. When the water temperature is too high, the water and aggregate should be stirred, and then the cement should be added to prevent the cement from being faked.

3. Sand and gravel aggregate should take coverage measures in advance to prevent ice and snow from accumulating and frozen at low temperature.

4. Pour in winter, and the concrete exterior agent should be used to improve the antifreeze of the concrete. The external agent is measured by a special person, and the amount of plus agents of Luhui transportation facilities is strictly executed. The outer agent must be dissolved into a solution dose, and the amount of stirring of each disk is appropriately extended.

5. When the concrete is constructed during winter construction, a special person should be set up to detect the temperature of the water and thickness orthopedics. Low 10 ° C), Luhui traffic facilities believe that once abnormal conditions are found, the relevant personnel will be notified immediately to take timely measures.

6. Clear ice and snow dirt on the template and steel bar before the concrete. When using heating and maintenance, the concrete must not bottom out at 10 ° C before the concrete. Before covering a layer of concrete, you must not bottom out at 2 ° C.

7. After the construction of concrete engineering, it should be immediately cold and heat preservation. At the construction site, the necessary grass bags and other coverage should be prepared. In particular, the corners of the structure, the edge of the edge, and the winding surface should be wrapped. At 5 ° C, it is not allowed to sprinkle water to maintain and cover plastic film maintenance.

3. Template project precautions for winter construction

1. Demolition of templates shall be strictly approved, and the model can be dismantled after confirming the test report of the same condition test block test report.

2. During the demolition process, if it is found to have frozen damage, the demolition should be suspended. After processing, the mold is continued.

3. When the template is dismantled, the difference between the surface temperature and natural temperature of the concrete should not exceed 20 ° C, otherwise the insulation material should be used in a timely manner to slowly cool it.

4. Safety fire prevention measures

1. Before entering the winter, the workers carry out safety fire protection measures to work.

2. Safety, fire education for employees, implement fire prevention, gas poisoning, anti -slip, and anti -freezing measures during the winter construction, establish a safety fire responsibility system, and implement the construction team and individual.

3. Before entering the winter period, the equipment used in the winter during the winter period, heat source equipment, heating equipment, and temporary equipment for safety inspection and acceptance.

4. Strictly use the fire approval system. For the flammable thermal insulation materials on the spot, we must strengthen management, and it should be cleaned in time for flammable products used.

5. Do a good job of the water source and equipment to make it in good use.

6. On -site fire sources should be strengthened, power switches, control boxes, etc. must be locked, and special personnel are responsible for management to prevent leakage and electricity.

7. If you contact the source of the auto sources and hot water during construction, prevent burns.