For those not in the know, most concrete plants use pneumatic systems (compressed air) to operate the various functions of the concrete plant like opening and closing the cement silo valve and the gates on the aggregate bins. These devices use a solenoid valve to turn the air on and off. These valves can be configured many ways but concrete plants commonly use the simple open or closed valves meaning they are all open or all closed; or they use inching meaning they can be opened all or partial. Some concrete plant operators, especially those with manual control systems, will have a difficult time controlling precision weighing of materials when the simple on/off valves are used which is discussed further in a separate post.
Concrete users are aware of the need to use in line with national recognition, which is for the safety of building products and whom. But believe that many users do not know the term “concrete slump” is not very clear that concrete slump is used to determine the quality of concrete construction is a good standard. Then the role of concrete slump on the concrete is: If the