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How to reduce concrete mixing plant cost in operation 1
To reduce concrete mixing plant cost in operation, we should first focus on reasonable purchasing of raw materials for concrete: additives, aggregates, sand, water, cement, coal ash, mineral powder, etc.
1) Additives. Concrete admixture is a chemical substance that is mixed in the process of mixing concrete and accounts for less than 5% of the cement mass, which can significantly improve the performance of concrete. Strengthening the inspection of liquid admixtures helps to ensure the effectiveness of admixture content. Through multiple comparisons and tests, the quality and price of admixtures can be optimized, and the cost of admixtures can be effectively controlled, and the cost of admixtures in concrete costs can be controlled. Share ratio. At the same time, it should be noted that if the type of admixture needs to be changed, the measuring instruments and the admixture storage tank of the concrete batching plant need to be cleaned first to avoid unnecessary effects caused by residues left in the container.
2) Sand and gravel materials. When selecting sand and gravel materials, first go to the place of origin of the sand and gravel materials for inspection to ensure that high-quality sand and gravel materials are used for mixing concrete. The selection of high-quality sand and gravel plays an important role in the cost control of concrete mixing plants. On the one hand, the high-quality sand and gravel have low mud content and generally meet the standards, which can reduce sand screening due to unqualified sand and gravel. The stone washing process effectively avoids the occurrence of a large amount of waste; on the other hand, although the purchase of high-quality sand and gravel will increase the cost of sand and gravel, the high-quality sand and gravel ensure the strength of concrete, thereby reducing the amount of admixtures and cement , The comprehensive cost incurred is also significantly lower than the cost of purchasing inferior sand and gravel.
3) Water. In order to ensure the quality of concrete, drinking water is usually used for mixing concrete, but when drinking water is difficult to obtain, non-potable water must be used for mixing concrete. Non-drinking water must undergo certain inspections and tests before concrete mixing and use, and can only be used after compliance with regulations, which also causes waste to a certain extent.
4) Cement. When purchasing cement, choose a rotary kiln cement with good reputation, stable quality, and large scale. For bulk cement kilns, the temperature of the tank should be controlled within a certain range. If the temperature of the cement into the tank is not well controlled, the cement is prone to problems such as agglomeration, which on the one hand is extremely unfavorable for the mixing of concrete, on the other hand, it will also cause unnecessary waste.
5) Fly ash. The fly ash used for concrete mixing is divided into two categories: F fly ash and C fly ash. In order to ensure the quality of concrete, the corresponding grade of fly ash should be selected for different concrete projects.
6) Mineral powder. As the least amount of concrete admixture, mineral powder plays an indispensable role in improving the performance of concrete. Mainly manifested in: ①Improve the physical gradation of cementitious materials; ②Improve the mechanical properties of concrete; ③Improve concrete workability; ④Improve the concrete's anti-seepage and frost resistance, and enhance its durability. Therefore, it is necessary to strictly control the quality of mineral powder when purchasing mineral powder, especially the fineness of mineral powder; in addition, when it is used in conjunction with other cementitious materials, it is necessary to conduct multiple comparison tests according to different gradations, and select the most suitable one. Than to avoid unnecessary losses.
Of course, there are many other ways to reduce cost in the operation of a concrete mixing plant. We will elaborate on them in the future.