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When the average day and night temperature is lower than 5 ℃ or the low temperature is lower than -3 ℃, it should be treated as winter construction. When the ambient temperature is lower than 5 ℃, it is forbidden to sprinkle the concrete surface for curing. At this time, the curing liquid can be sprayed on the concrete surface, and appropriate heat preservation measures should be taken.

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Self loading Concrete Mixer Truck
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1.Concrete mixer truck with automatic feed and water supply. The latest technology saves time and effort.
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What is hydraulic concrete? In order to achieve the purpose of flood control, irrigation, power generation, water supply, shipping, etc., it is usually necessary to build different types of buildings for water blocking, flood discharge, water delivery, sand discharge, etc. These buildings are called hydraulic structures.

From the long winter twelfth lunar month to decisively press the "pause button" for the prevention and control of the spread of the new crown epidemic, to the early spring of February to grasp the epidemic prevention and control and the economic development and start the "fast forward button" to resume production in time, concrete and cement All enterprises and employees in the product industry have experienced this difficult and unforgettable process.

High-tech projects are the focus of local governments to support resumption of work. Since February, more than 50 production bases of Jianhua Building Materials Group have resumed production and resumed production. On the premise of doing a good job in epidemic prevention and control, each subsidiary accelerated production and guaranteed transportation, helped the major projects in various regions to resume work smoothly, and recaptured the delayed construction period .

At present, concrete pumps have been widely used in the construction of concrete projects. By adopting the concrete delivery method, the construction party can not only reduce costs, but also save construction time and standardize the construction site. However, some problems will inevitably occur during the use process, such as the flow interruption during the pumping process, so why does the concrete delivery pump have a flow interruption? What harm will it cause?

According to the various data provided by the concrete mixing station, I summarized some experiences and lessons in the application of pumping commercial concrete to block pumps and pipes, and hope to help you concrete friends. The characteristics of pumped concrete are uniform material quality, stable quality, and fast feed speed. It can continuously complete vertical and horizontal transportation at one time, with high production efficiency and labor saving. Because the concrete delivery pump

Machine-made sandstone powder (referred to as powder below 75μm), reaching 3312%. In order to meet the particle grading requirements, the crushed stone plant will wash the machine-made sand with water, and the powder will be washed away by water to make the fine particles 01315mm sieve pass the sieve residual value 5%. At first, we did not pay enough attention to this situation. The average particle size of the sand increased by 2%, but the pumpability

Ou Hong, director of the Investment Department of the National Development and Reform Commission, said in Beijing on the 21st that as of March 20, the rate of resumption of key national projects had reached 89.1%. On March 21, Ou Hong, director of the Investment Division of the National Development and Reform Commission, said in Beijing that as of March 20, the national key project recovery rate had reached 89.1%.

It is often encountered that the concrete transmission pump gearbox is covered, and some harm will occur. Today, the editor will take you to see what are the common hazards of concrete pump gearboxes covered?