1. The discharge residual rate and blade design are unreasonable. From the internal structure of the mixing drum, the mixing drum of the concrete mixer truck relies on the rotating cylinder to drive the spiral motion generated by the two spiral blades, which makes the concrete obtain the compound movement of both "tangential" and "axial", so that the mixing drum has the function of mixing and discharging. Therefore, the relevant factors of forming this spiral movement, such as the curve parameters of spiral blades, are obtained The geometric shape and size of the mixing drum have an important influence on the discharge residual rate of the mixer truck. However, the excessive discharge residual rate means that there will be more residual materials in the mixing tank after unloading, so it is more likely to stick materials in the mixing tank due to accumulation over time.

2.運(yùn)輸距離過長。隨著城市化的進(jìn)程及城市規(guī)劃的要求，越來越多的攪拌站被要求遷到郊區(qū)和郊縣，與市區(qū)的距離越來越遠(yuǎn)，而由于混凝土這一產(chǎn)品的特殊性，任何預(yù)拌混凝土在未添加緩凝劑的情況下，都在1h左右進(jìn)入初凝狀態(tài)，如果這時才進(jìn)行混凝土澆注施工，不但影響混凝土的工程質(zhì)量，而且因混凝土失去流動性，易在攪拌筒及葉片上凝結(jié)，導(dǎo)致粘罐，嚴(yán)重時甚至整車混凝土粘在罐內(nèi)及造成液壓設(shè)備的損壞，所以自上料混凝土攪拌罐車運(yùn)送預(yù)拌混凝土有其時間控制的輸送半徑，一般應(yīng)控制在1h以內(nèi)。

2. The transportation distance is too long. With the process of urbanization and the requirements of urban planning, more and more mixing plants are required to move to the suburbs and suburban counties, and the distance from the urban area is getting more and more far. Due to the particularity of concrete, any ready mixed concrete will enter the initial setting state within 1h without adding retarder. If the concrete pouring construction is carried out at this time, it will not only affect the concrete quality Engineering quality, and because of the loss of fluidity of concrete, it is easy to coagulate on the mixing drum and blades, resulting in sticking to the tank, even the whole vehicle concrete sticking in the tank and causing damage to the hydraulic equipment. Therefore, the concrete mixer truck has its time controlled delivery radius for transporting ready mixed concrete, which should be controlled within 1h.

3.工地施工設(shè)計不合理。工地在墻柱等施工中，會用塔吊吊斗車的方法進(jìn)行澆搗，由于塔吊的料本來塌落度就比泵送的低，更由于施工時間長，卸一車混凝土通常要2~4h，有些駕駛員為了省油而停止攪拌筒的正常轉(zhuǎn)動，這種情況下，特別容易造成粘罐，有時9方車一次粘罐就達(dá)1t，在夏天情況更嚴(yán)重。

3. The site construction design is unreasonable. In the construction site, it is usually easier to use the crane truck to pour the concrete for 2 hours, which is usually more convenient for the driver to stop pouring concrete at the construction site More serious.

4.使用維護(hù)不當(dāng)。自上料混凝土攪拌罐車駕駛員在攪拌車卸料完畢后未及時清理清洗攪拌罐內(nèi)及葉片上殘留的混凝土，在攪拌車回站過程中不轉(zhuǎn)動攪拌罐，殘留的混凝土干燥后凝固在拌筒及葉片上，以后就會越聚越多，形成粘罐現(xiàn)象。

4. Improper use and maintenance. The driver of the concrete mixer does not clean and clean the residual concrete in the mixing tank and on the blades in time after the unloading of the mixer truck, and does not rotate the mixing tank when the truck returns to the station. The residual concrete will solidify on the mixing drum and blades after drying, and it will accumulate more and more and form the phenomenon of sticking the tank.

5.自上料混凝土攪拌罐車工作環(huán)境溫度過高。夏季在南方地區(qū)白天中午前后，環(huán)境溫度經(jīng)常超過30℃，在這種情況下運(yùn)輸混凝土，將會由于混凝土坍落度損失快以及罐體周圍溫度相對更高，因而混凝土更容易粘罐。

5. The working environment temperature of concrete mixer is too high. In summer, the ambient temperature often exceeds 30 ℃ around noon in the south of China. In this case, the concrete is more likely to stick to the tank due to the rapid loss of concrete slump and the higher temperature around the tank.