Construction steps of foam concrete
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Guotai Junan released a research report saying that under the background of carbon neutrality, the scarcity of coal mines is prominent, and the value of assets will continue to increase. The high point of capital expenditure in the coal industry appeared in 2012. Under the general direction of carbon neutrality, the overall investment in the industry has slowed down, and capital expenditure has gradually declined. From 2021 to now, the Energy Bureau of the National Development and Reform Commission has only newly approved 17.4 million tons of concrete foaming agent.
1. To ensure that all kinds of instruments used during construction can operate normally, check their status and break the work, and the materials must be in place.
2. The place where the building needs to be poured with fresh foam concrete must be clean and tidy, there is no loosening, and there is no peeling. Check and clean up the dirt on the surface in advance, remove excess stagnant water in time, carefully check the preparation of each step, and confirm that it is qualified.
3. To ensure the integrity of the machine in the process of transmission, we must make sure that there is enough water.
1. To start the machine, the constructors shall first operate the machine and debug the machine before the formal start of construction, in which it is necessary to carefully check whether there are loopholes and make sure that there are no problems before officially starting the construction.
2. Adjust the concentration of foamed concrete, the general density is about 300-1800kg/m3, and the foamed concrete with 300-1200kg/m3 is the most commonly used. When high concentration of foam concrete is needed, the concentration of cement slurry can be appropriately increased to control the bubble size, on the contrary, the concentration of cement slurry can be appropriately reduced. Can first add the foaming agent to the water, the general water is between 1.6 and 10kg, and the foaming agent is between 0.1 and 0.6kg, and then make it mix evenly, taking no more than 3 minutes. To form the crystals to be used next.
Then, according to the different needs of the construction team, follow the appropriate mix ratio to add water to the mixer, the amount of water is between 24 and 150kg, after that, you can continue to add an appropriate amount of cement to the container, the amount of cement is between 48 and 300kg, in which the cement grade is not less than 425, generally speaking, the ratio is about 6: 1, then fine sand and appropriate auxiliaries can be added, and finally, various ingredients can be fully mixed. The specific operation time is about 2 minutes. Add the prepared crystal to the newly prepared mixture, mix it evenly again, and wait 2 minutes.
3. Cover. Before covering, set up the hoarding where you need to cover, and after making sure that there are no pores, cover the surface with the adjusted foam concrete. According to the requirements of the construction team, a high line is placed on its surface, usually according to the surface of 2 meters, and then the surface is flattened (with a ruler, the length is between 3 and 5 meters), and it must be guaranteed not to destroy its shape due to shaking, so as to ensure the integrity of the finished product. The foamed concrete is separated according to the different requirements of the construction team. In the process of transportation, the passage of the pipeline should also be checked to prevent the instability caused by blockage, so as to ensure the smooth progress of the construction.
During this period, the pipes that hinder the transport of materials must be repaired in time to ensure that the appropriate pressure is always maintained. In order to prevent the bad phenomenon caused by pipeline vibration, the pipeline must be placed on the bearing tool in advance, such as Madden. Configure the corresponding filtering equipment and control the purity of the product to filter out sundries. And reasonably control the product density, when the operation is about to be completed, reasonable material selection, less waste.
4. Clean the equipment in time after finishing, and arrange the corresponding responsible personnel to take care of the nature first, and then spray water on the products regularly after 36 hours. It is best to spray water 2-3 times a day, and no one should be near it before. Do not use until more than 15 days after use. After completion, to carry out quality inspection and protection of the product, according to the need to fill supplementary loopholes, fine stones can be used.
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Despite the German government's decision to restart coal-fired power plants in response to reduced fossil fuel supplies in Russia, the conflict between Russia and Ukraine could eventually accelerate Germany's green energy transformation.
The German government aims to generate 80% of the country's electricity from renewable energy by 2030. However, as the energy supply crisis intensifies, Germany's recent decision to restart coal-fired power generation poses challenges to the country's energy transformation.
Recently, the German Federal Cabinet adopted a new resolution aimed at reducing natural gas power generation and ensuring the security of energy supply. Germany will restart 16 fossil fuel power plants and extend the operating permits of another 11 power plants.
According to a study by Allianz Trade, a credit insurance company, the resumption of coal power in Germany may be temporary and the conflict between Russia and Ukraine will eventually accelerate Germany's green energy transformation.
The study found that the increase in coal-fired power generation approved by the German government in early July would not increase EU carbon dioxide emissions because of the EU emissions trading system. Coal is unlikely to be a long-term substitute for Russian natural gas because of the high price of carbon emissions trading in the European Union.
Luoyang Tongrun Nano Technology is a trusted chemical manufacturer and supplier providing high-quality chemicals and Nanomaterials. If you are looking for the concrete foaming agent, please feel free to contact us and send an inquiry.