The four control links of concrete mixing plant management include: raw material ratio design and control, production, transportation and concrete pumping process control, factory inspection and sampling, etc.
01. Proportion design and control
1. Scientific concrete ratio design is a reflection of the technical strength of concrete production.
2. The mix ratio is determined by the construction unit according to the strength and strength requirements of local raw materials, and reported to the design department and the owner for approval.
3. The technical operators of the mixing plant shall operate strictly in accordance with the mix ratio, and the mix ratio design shall take into account the difficulty of the construction site. In the production of concrete, according to the problems reflected by the construction units on site, the mix ratio design should be carefully studied, and the laws should be found out through tests to make the mix ratio more scientific and reasonable, so as to ensure smooth construction.
4. Concrete is characterized by diversified materials and serialized strength. According to the cement strength grade, coarse and fine aggregate particle gradation and admixture type, you can initially design some suitable interval of water-cement ratio, and a series of ratio test. Formulation strength can choose different concrete strength corresponding to the water-cement ratio, and can adjust the ratio and mixing. The compatibility of the concrete mix can be used as the selected mix ratio. In order to control the concrete mix ratio, each working shift can choose the concrete mix ratio and analyze the concrete mix ratio for testing.
02. Production and transportation process control
The technical operator enters the construction mix ratio into the mixing operation control computer, makes the first mix of each mix ratio, measures the concrete mixing slump, observes its viscosity and water retention, and evaluates whether its compatibility meets the requirements. If it does not meet the requirements, it will be adjusted by the operator. After the technician signs and approves, the formal mixing and production will be carried out.
03. Delivery Inspection.
After the concrete arrives at the construction site, in addition to the species, grade and quantity confirmed by the invoice, the factory inspection should be carried out according to the regulations. In order to adapt to changes in conditions, the slump of the mix should be controlled and slow-setting time, and according to the situation measures, such as the addition of retarder and secondary water reducing agent. Must determine the second water reducing agent into the range to ensure that the additives are mixed evenly.
04. Improve the quality of practitioners and technical data filing.
Improving the overall quality of the mixing plant staff and on-site construction team is a very important link. Concrete is an uninterrupted semi-finished product. It consists of many links, each of which is important. The production of semi-finished products requires 7 days and 28 days of maintenance to form the final product with qualified strength. Therefore, in concrete production, employees must be trained for their jobs and be involved in the concrete production. Transportation process. Quality is the key.
