During the production process, it is inevitable that there may be over mixing of additives due to issues with the weighing system.
The so-called weighing system problem may be due to the fact that the feeding butterfly valve of the additive is not closed before weighing, resulting in the additive directly leaking into the mixer; It may also be due to leakage from butterfly valves or additive scales; It may also be due to significant errors during weighing.
Due to the severe segregation of concrete caused by excessive addition of high-efficiency water reducing agents, it is easy to detect during on-site inspection, and therefore will not be discussed here.
Efficient retarders, due to their minimal water reducing effect, are difficult to detect in actual production as excessive mixing does not cause significant concrete collapse and severe segregation.
.