Now the weather temperature is MINUS 2.3 degrees, can the construction site still build walls and bricks?

When the outdoor daily average temperature is stable below 5℃ for five consecutive days, winter construction measures should be taken for masonry engineering. ? Materials used in winter construction shall meet the following requirements:

1, lime plaster, electric gypsum, etc. Freezing should be prevented. If frozen, it should be used after melting;

2. The sand used for mixing mortar shall not contain ice and frozen blocks larger than 10mm;

3, masonry bricks or other blocks shall not be frozen by water.

In addition to the requirements of normal temperature, not less than 1 group of test blocks with the same curing conditions as masonry should be retained for mortar test blocks in winter construction, and the strength should be tested for 28d. When the local foundation soil has frost heaving property, it should be built on unfrozen foundation. During construction and before backfilling, the foundation should be prevented from freezing.

Ordinary bricks, sintered porous bricks, autoclaved lime-sand bricks, autoclaved fly ash bricks, sintered hollow bricks and lightweight aggregate concrete small blocks with high water absorption should be watered and wetted when the temperature is higher than 0℃; When the temperature is lower than or equal to 0℃, it is unnecessary to water, but the consistency of mortar must be increased.

Extended data

Preparations for winter construction

1, before construction, according to the scale characteristics of the project and the environmental conditions of the construction site, make a special winter construction plan. Determine the construction deployment and arrangement, construction scheme, construction methods, procedures, progress, safety technical measures for the supply and management of construction machinery and equipment, materials and corresponding management systems for key parts.

2, before construction, according to the requirements of the construction plan, all construction personnel for winter safety education and training and safety technical measures disclosure, the requirement is to grasp the main points, clear responsibilities and other requirements.

3. During the construction, the construction site shall be inspected according to the requirements of the construction scheme. Implement the requirements specified in the construction plan and safety technical measures, and confirm the implementation. For those that have not been put in place in the inspection, formulate rectification measures and plans to meet the needs of construction.

4. During the winter construction, keep close contact with meteorological and hydrological departments, keep abreast of the weather changes, and take corresponding preventive measures in time according to the weather changes to ensure the construction safety and smooth implementation of the construction work.

Baidu Encyclopedia-Winter Construction