Why is it important to follow mix design specifications in concrete work?

Following mix design specifications is critical because it ensures that the concrete produced possesses the necessary performance characteristics that meet the specific requirements of a project. These specifications are tailored to achieve desired properties such as strength, workability, durability, and resistance to environmental factors. When the correct mix design is adhered to, the resulting concrete will perform as expected in terms of load-bearing capacity, longevity, and behavior under various conditions, which ultimately leads to successful project outcomes.

While cost, ease of finishing, and setting times are important factors in concrete work, they do not influence the essential qualities of the concrete dictated by the mix design. Therefore, compliance with mix design specifications directly impacts the integrity and functionality of the concrete in application.