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混凝土出现离析现象与设备操作有关吗?

所属分类:行业新闻 发布时间:2021-06-08 来源:http://www.shanqijituan.com 浏览量:18

我们要知道什么是混凝土离析现象,简单地说就是混凝土中的主要材料灰浆与砂石出现分离。来自百度百科较的解释就是:混凝土拌合物组成材料之间的粘力不够,不足以抵抗粗骨料的下沉,使混凝土拌合物成分相互分离,造成内部组成和结构不均匀的现象。
First of all, we should know what is the concrete segregation phenomenon, that is, the main material in the concrete mortar and sand appear separation. The more professional explanation from Baidu Encyclopedia is: the cohesion between the components of concrete mixture is not enough to resist the sinking of coarse aggregate, which makes the components of concrete mixture separate from each other, resulting in the phenomenon of uneven internal composition and structure.
造成混凝土出现离析其中主要的原因还是搅拌站的问题,不同级别的混凝土配比都有严格的规范,水、水泥、砂石料、添加剂的使用不当都有可能造成混凝土离析。
The main reason for concrete segregation is the problem of mixing station. Different levels of concrete have strict specifications. Improper use of water, cement, aggregate and additives may cause concrete segregation.
主要由以下及几种情况:
Mainly by the following and several situations:
1、原材料的配比不当,其中水加多了,或者水泥的用量少等都会造成成品混凝土的离析。
1. Improper proportioning of raw materials, including more water or less cement will cause segregation of finished concrete.
2、沙子质量不好,含水过高也都会造成离析。混凝土搅拌车
2. Sand quality is not good, too high water content will also cause segregation. Concrete mixer truck
自动上料混凝土搅拌车
3、碎石级配不好,碎石粒径增大、级配变差、单一级配都容易造成混凝土的离析现象。
3. The segregation of concrete is easily caused by poor grading of crushed stone, the increase of crushed stone particle size, poor grading and single grading.
4、添加剂加过量,缓凝剂等添加剂过量,或添加剂和水泥的适应性不好也会造成混凝土离析。
4. Excessive addition of additives, retarder and other additives, or poor adaptability of additives and cement will also cause concrete segregation.
当然也有不当使用混凝土搅拌车造成的原因,这也是我们在日常使用中不能忽视的。
Of course, there are also reasons for improper use of concrete mixer, which we can not ignore in daily use.
1、在混凝土运输过程中,当路途比较远的时候,我们要中途在罐体里加水以防止混凝土的凝结。但是掌握不好这个量的话水加多了也会造成混凝土的离析,这是有些新手司机师傅特别容易犯的错误,或者就是没有严格按照搅拌车使用流程来,在头洗车时搅拌罐里的水没有放,或者没有放完就直接进料。小型混凝土搅拌车
1. In the process of concrete transportation, when the road is long, we should add water in the tank to prevent the concrete from setting. However, if the amount of water is not well controlled, it will also cause segregation of concrete. This is a mistake that some novice drivers are particularly prone to make, or they do not strictly follow the mixing process. When washing the car on the first day, the water in the mixing tank is not drained, or they feed directly before they finish. Small concrete mixer
2、在混凝土的运输过程中搅拌罐长时间的停转造成的离析现象,搅拌罐在运输途中千万不能长时间的停止,运输途中没有有效的搅拌的话混凝土会出现沙、石、水泥互相脱离,粗骨料下沉从而造成离析,但是这时我们更需要担心混凝土凝结造成闷罐现象。
2. During the transportation of concrete, the segregation phenomenon is caused by the long-time stop of the mixing tank. The mixing tank must not be stopped for a long time during the transportation. If there is no effective mixing during the transportation, the sand, stone and cement will separate from each other, and the coarse aggregate will sink, resulting in segregation. But at this time, we need to worry about the phenomenon of stuffy tank caused by concrete condensation.
3、如果搅拌罐转速过快的话也会造成混凝土的离析。混凝土在运输过程中如果驾驶员使搅拌罐转速太快,在离心力的作用下会造成较重的碎石子下沉。
3. If the speed of mixing tank is too fast, it will also cause concrete segregation. In the process of concrete transportation, if the driver makes the mixing tank rotate too fast, heavy gravel will sink under the action of centrifugal force.
4、就是罐体设计的不合理原因,如果搅拌罐设计的不合理也会造成混凝土的离析现象发生,主要是罐体内部搅拌叶片的安装设计角度以及做工工艺差等原因,造成混凝土的搅拌不均匀而造成混凝土在运输途中出现离析。
4. The last is the unreasonable design of the tank. If the design of the mixing tank is unreasonable, it will also cause the segregation of concrete. The main reasons are the installation design angle of the mixing blade inside the tank and the poor workmanship, which will cause the uneven mixing of concrete and cause the segregation of concrete during transportation.
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