攪拌車與運輸的混凝土密度關系緊密
大家都知道攪拌車一般是用來運輸混凝土的，從攪拌站到工地或者其他地方，混凝土是用膠凝材料將骨料膠結成整體的工程復合材料的總稱。一般而言，混凝土是指以水泥為膠凝材料，砂石為骨料，與水按一定比例混合，與水泥混合而成的水泥混凝土。攪拌車與運輸的混凝土密度關系是怎樣的呢？
As we all know, the mixer truck is generally used to transport concrete. From the mixing plant to the construction site or other places, concrete is the general name of engineering composite materials that use cementitious materials to cement the aggregate into a whole. Generally speaking, concrete refers to the cement concrete with cement as cementitious material, sand as aggregate, mixed with water in a certain proportion and mixed with cement. What is the relationship between the mixer and the density of concrete transported?
攪拌車一般按平方數量來劃分。平方量是指罐的體積，而不是混凝土的重量。攪拌罐中安裝的混凝土不同，質量也不同。這是因為不同的混凝土密度不同，混凝土按表觀密度可分為三種：重混凝土、普通混凝土和輕質混凝土。
Mixer trucks are generally divided by square quantity. The square quantity refers to the volume of the tank, not the weight of the concrete. The concrete installed in the mixing tank is of different quality. This is because different concrete has different densities. According to the apparent density, concrete can be divided into three types: heavy concrete, ordinary concrete and light concrete.
重混凝土是由表觀密度大于2500Kg/m?的特別致密重的骨料制成，如重晶石混凝土、鋼屑混凝土等。它們對X射線和伽馬射線是不透明的，像這樣在輸送高密度混凝土，司機要特別注意，因為它的密度高，同樣體積的攪拌車在運輸重混凝土時總質量會增加很多，車輛的慣性也會增加。
Heavy concrete is composed of concrete with apparent density greater than 2500kg/m? It is made of especially dense and heavy aggregates, such as barite concrete, steel chip concrete, etc. They are opaque to X-rays and gamma rays. When transporting high-density concrete like this, drivers should pay special attention to it. Because of its high density, the total mass of the mixer truck with the same volume will increase a lot when transporting heavy concrete, and the inertia of the vehicle will also increase.
大得多，所以車速不宜過快，剎車也不宜過快，尤其是轉彎時，一定要減速慢行，小心駕駛；并且由于其密度大，不易攪拌，對攪拌機的減速機也是一個考驗。
It is much larger, so the speed should not be too fast, and the braking should not be too fast. Especially when turning, you must slow down and drive carefully; And because of its high density, it is not easy to mix, which is also a test for the reducer of the mixer.
普通混凝土是我們在建筑中常用的混凝土。其表觀密度在1950-2500Kg/m?之間，骨料為沙、石等。這種混凝土常由攪拌車運輸。卸料應按規定進行，運輸時間不得超過混凝土凝固時間。
Ordinary concrete is commonly used in buildings. Its apparent density is 1950-2500kg/m? The aggregate is sand, stone, etc. This kind of concrete is often transported by mixer truck. Unloading shall be carried out as specified, and the transportation time shall not exceed the concrete setting time.
全自動攪拌車廠家另外提醒，輕質混凝土是表觀密度小于1950Kg/m?的混凝土，可分為輕骨料混凝土、多孔混凝土和大孔混凝土。這些混凝土的密度較小，在攪拌罐中運輸。整車質量比較輕，駕駛者比較容易駕駛。
The manufacturer of full-automatic mixer also reminds that the apparent density of lightweight concrete is less than 1950kg/m? Concrete can be divided into lightweight aggregate concrete, porous concrete and macroporous concrete. These concretes have a low density and are transported in mixing tanks. The whole vehicle is light and easy to drive.
此外不少人都說攪拌車的攪拌罐越大越容易離稀，罐體設計不合格的確會造離析現象，但是與罐體大小關系不大。主要是罐體內部攪拌葉片的安裝設計角度以及做工等不合格造成的。一些小改裝廠做的上裝，罐體設計不合格，會出現罐體內的葉片攪拌不均勻而造成離析。在購買攪拌車的時候有條件盡量選擇知名大廠，一般只要是在正規大廠生產的攪拌罐都沒什么問題。
In addition, many people say that the larger the mixing tank of the mixer truck is, the easier it is to dilute. If the tank design is unqualified, segregation will indeed occur, but it has little to do with the size of the tank. It is mainly caused by the unqualified installation design angle and workmanship of the mixing blade inside the tank. Some small refitting plants do the top loading, and the tank body design is unqualified, which will cause segregation due to uneven mixing of the blades in the tank body. When purchasing a mixer, try to choose a well-known large factory if possible. Generally, there is no problem as long as the mixing tank is produced in a regular large factory.
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