我們要知道什么是混凝土離析現(xiàn)象，簡(jiǎn)單地說就是混凝土中的主要材料灰漿與砂石出現(xiàn)分離。來自百度百科較的解釋就是：混凝土拌合物組成材料之間的粘力不夠，不足以抵抗粗骨料的下沉，使混凝土拌合物成分相互分離，造成內(nèi)部組成和結(jié)構(gòu)不均勻的現(xiàn)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.
造成混凝土出現(xiàn)離析其中主要的原因還是攪拌站的問題，不同級(jí)別的混凝土配比都有嚴(yán)格的規(guī)范，水、水泥、砂石料、添加劑的使用不當(dāng)都有可能造成混凝土離析。
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.
主要由以下及幾種情況：
Mainly by the following and several situations:
1、原材料的配比不當(dāng)，其中水加多了，或者水泥的用量少等都會(huì)造成成品混凝土的離析。
1. Improper proportioning of raw materials, including more water or less cement will cause segregation of finished concrete.
2、沙子質(zhì)量不好，含水過高也都會(huì)造成離析。混凝土攪拌車
2. Sand quality is not good, too high water content will also cause segregation. Concrete mixer truck
3、碎石級(jí)配不好，碎石粒徑增大、級(jí)配變差、單一級(jí)配都容易造成混凝土的離析現(xiàn)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、添加劑加過量，緩凝劑等添加劑過量，或添加劑和水泥的適應(yīng)性不好也會(huì)造成混凝土離析。
4. Excessive addition of additives, retarder and other additives, or poor adaptability of additives and cement will also cause concrete segregation.
當(dāng)然也有不當(dāng)使用混凝土攪拌車造成的原因，這也是我們?cè)谌粘Ｊ褂弥胁荒芎鲆暤摹?/div>
Of course, there are also reasons for improper use of concrete mixer, which we can not ignore in daily use.
1、在混凝土運(yùn)輸過程中，當(dāng)路途比較遠(yuǎn)的時(shí)候，我們要中途在罐體里加水以防止混凝土的凝結(jié)。但是掌握不好這個(gè)量的話水加多了也會(huì)造成混凝土的離析，這是有些新手司機(jī)師傅特別容易犯的錯(cuò)誤，或者就是沒有嚴(yán)格按照攪拌車使用流程來，在頭洗車時(shí)攪拌罐里的水沒有放，或者沒有放完就直接進(jìn)料。小型混凝土攪拌車
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、在混凝土的運(yùn)輸過程中攪拌罐長(zhǎng)時(shí)間的停轉(zhuǎn)造成的離析現(xiàn)象，攪拌罐在運(yùn)輸途中千萬不能長(zhǎng)時(shí)間的停止，運(yùn)輸途中沒有有效的攪拌的話混凝土?xí)霈F(xiàn)沙、石、水泥互相脫離，粗骨料下沉從而造成離析，但是這時(shí)我們更需要擔(dān)心混凝土凝結(jié)造成悶罐現(xiàn)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、如果攪拌罐轉(zhuǎn)速過快的話也會(huì)造成混凝土的離析。混凝土在運(yùn)輸過程中如果駕駛員使攪拌罐轉(zhuǎn)速太快，在離心力的作用下會(huì)造成較重的碎石子下沉。
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、就是罐體設(shè)計(jì)的不合理原因，如果攪拌罐設(shè)計(jì)的不合理也會(huì)造成混凝土的離析現(xiàn)象發(fā)生，主要是罐體內(nèi)部攪拌葉片的安裝設(shè)計(jì)角度以及做工工藝差等原因，造成混凝土的攪拌不均勻而造成混凝土在運(yùn)輸途中出現(xiàn)離析。
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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2022-12-23
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