Usage of concrete thermal insulation cement blanket

Concrete is the most indispensable existence in architecture! Whether it is paving, bridging, building, it is one of the main materials, and its use is huge! It's very, very easy to use, but it's cumbersome to use. What kind of material is so sentimental as cement? The truck that transports it also has mixer function! Still have to stir all the time, can't stop! And the application of concrete is generally to modeling, to set up a mold, pour the concrete in, and then wait for it to set... Very troublesome, time-consuming! Even with prefabricated slabs, transportation, size and so on are all things!

However, the total content of fly ash and slag powder in concrete canvas should not be greater than 50% of that of cementitious materials; the water binder ratio of 5 should not be greater than 0.45; the sand ratio of 6 should be 38% ～ 45%. Considering that the total construction period of mass concrete project is generally long, on the premise of ensuring the concrete strength to meet the use requirements, this article stipulates that the late strength of 60 d or 90 d can be used as the acceptance index of mass concrete. This can reduce the amount of cement in mass concrete, increase the amount of admixture, and reduce the adiabatic temperature rise of mass concrete. At the same time, it can reduce the temperature difference between the inner surface of concrete after pouring, reduce the difficulty of cooling speed control, and further reduce the maintenance cost. The pumpability and strength of concrete have been improved due to the extensive application of polycarboxylate with high performance and other water reducing spunlets. According to the needs of engineering construction, the provisions of the original standard on slump, water consumption, water binder ratio and sand ratio are adjusted. The main purpose of adding fly ash into cementitious materials is to reduce the total amount of hydration heat and heat release rate of mass concrete. The resulting new product is a new type of cement blanket.

On the earth, the cement blanket will inevitably encounter some natural disasters, such as earthquakes and fires. It's good if it doesn't happen, but what if there's some disaster and there's no place to live? Today we will bring you a special cost-effective tent scheme. This is made of Hanji cement blanket. It doesn't take long to build this one, and it doesn't take too much physical strength. Just water it, and it becomes very hard.

And fire prevention and anti-theft is also anti-theft, the quality is quite good. What about? Is it very convenient? The first thing you need to do is to find a flat area, inflate the tank of the tent, and then nail the tent around. The last thing to do is to water it with water. It is very soft before watering, but it is very hard after watering. Why is that? Its principle is to mix concrete powder into the fiber.

Later maintenance of cement blanket and matters needing attention

1. This material is used in Central China, and its design life is more than 50 years. In order to prolong the service life, it is suggested that the material should be maintained every 5-10 years, and a layer of cement slurry should be brushed on the surface of the material blanket, which can effectively extend the service life of the material.

2. After the strength of the material reaches 10.0MPa, it can bear the load of personnel and light construction machinery.

3. It is not allowed to knock or pull the material after pouring water until the final strength is formed; it is not allowed to knock the material with sharp objects.