The influence of small automatic concrete mixer on concrete quality mainly lies in the measurement and mixing technology. During production, pay attention to observe the measurement error, adjust the overshoot, and grasp the residual quantity in the feeding process, so as to ensure that the measurement accuracy meets the requirements. Special attention should be paid to the following aspects:

1、外加材料对混凝土的影响很大，有一些的用量很小，在这一方面要特别注意其计量的精 确性。

1. Additional materials have a great influence on concrete, some of which are used in a small amount. In this regard, we should pay special attention to the accuracy of measurement.

2、混凝土的坍落度对混凝土的性能与质量有直接的影响，但是由于砂石的含水率不能保证稳定。这样，如果设备不能对砂石的含水率进行自动调整，就需要不断的对砂石的干湿程度和出料口的混凝土的塌落度进行观察和把握，必要时对砂和水的配比进行调整，以确保塌落度不出现较大偏差。

2. The slump of concrete has a direct impact on the performance and quality of concrete, but the moisture content of sand and gravel can not guarantee stability. In this way, if the equipment can not automatically adjust the moisture content of sand and gravel, it is necessary to continuously observe and grasp the dry and wet degree of sand and gravel and the slump of concrete at the outlet, and adjust the ratio of sand and water when necessary, so as to ensure that there is no large deviation in the slump.

3、搅拌的工艺方面主要是根据所生产的混凝土的特点对投料时序和搅拌、放出的时间进行调整，以确保混凝土混合并搅拌均匀，达到设计的要求和性能。当生产的混凝土中掺用掺合料时，搅拌时间应该适当延长。干掺时，粉煤灰的混凝土的搅拌时间要比普通混凝土延长10-30秒，其他掺合料的混凝土延长30-60秒。

3. Mixing technology is mainly based on the characteristics of the production of concrete feeding timing and mixing, release time adjustment, to ensure that the concrete mixing and mixing evenly, to meet the design requirements and performance. When admixtures are used in the concrete, the mixing time should be extended appropriately. When dry mixing, the mixing time of fly ash concrete is 10-30 seconds longer than that of ordinary concrete, and other admixtures concrete is 30-60 seconds longer.