The rationality of mix design is based on a certain quality of raw materials, theoretical calculations, and multiple trial mixes to meet the process of strength, construction performance, workability, durability, and economic performance.
This also requires concrete designers to fully understand the factors that affect strength, the conditions that affect construction and work performance, the weight of durability and cost, and to choose raw materials reasonably and selectively.
But often the mixing plant needs to meet the performance requirements of the concrete based on the materials used, without any selectivity, which forces the design to meet the requirements but is difficult to achieve.
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