Although we often see why the concrete mixer always turns when driving, many people have different ideas, and many people feel that the principle is very simple. The concrete just out of the concrete mixing plant is the initial material, but the simple mixing is completed after batching. In order to better ensure the homogeneity of concrete, the second mixing must be completed in the concrete mixing tank truck.

通常攪拌罐車須要確保每分十-三十轉(zhuǎn)的速度，夏天很有可能更低，只須要確保混凝土不產(chǎn)生離析和初凝就可以，過于頻繁的拌和反倒會(huì)導(dǎo)致混凝土中的水份過于揮發(fā)導(dǎo)致出料和易性差，影響到混凝土構(gòu)件澆筑產(chǎn)品質(zhì)量，反映在蜂窩表面漏筋等產(chǎn)品質(zhì)量瑕疵上。

Generally, the mixing tank truck needs to ensure the speed of 10-30 revolutions per minute, which is likely to be lower in summer. It only needs to ensure that the concrete does not produce segregation and initial setting. On the contrary, too frequent mixing will lead to excessive evaporation of water in the concrete, resulting in poor workability, affecting the quality of concrete pouring products, which is reflected in the product quality defects such as honeycomb surface reinforcement leakage.

混凝土攪拌罐車物流運(yùn)輸中途的第二次拌和應(yīng)屬深加工，可是并不是比較簡(jiǎn)單的轉(zhuǎn)動(dòng)，罐體轉(zhuǎn)動(dòng)次數(shù)對(duì)混凝土的均質(zhì)性尤其至關(guān)重要，6~8轉(zhuǎn)/分鐘為宜；過慢，混凝土內(nèi)部粗骨料容易下沉，太快，對(duì)駕駛員的安全有一定的影響到，而且也會(huì)增加混凝土水份的流逝，坍落度增大，影響到卸料；6~8轉(zhuǎn)/分鐘時(shí)，混凝土的初凝時(shí)間通常在3~6個(gè)小時(shí)。短暫的堵車對(duì)混凝土的影響到微乎其微，如果堵車時(shí)間過長(zhǎng)，混凝土的罐體轉(zhuǎn)動(dòng)次數(shù)要適當(dāng)加快1~2圈，并要時(shí)刻注意罐體轉(zhuǎn)動(dòng)是否異常，適當(dāng)?shù)臅r(shí)候可以加水來保持混凝土的和易性，避免粘罐和悶罐。

However, it is not easy for the driver to rotate the coarse aggregate too fast, and it is not easy for the concrete to sink in the second 8-6 minutes The initial setting time of concrete is usually 3-6 hours at 6-8 rpm. The short-term traffic jam has little effect on the concrete. If the traffic jam is too long, the rotation times of the concrete tank should be appropriately accelerated by 1 ~ 2 circles, and attention should be paid to whether the rotation of the tank is abnormal at all times. When appropriate, water can be added to maintain the workability of the concrete to avoid sticking and stuffy tank.

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