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Mix design is the process of determining the requirements and specifications of a concrete mixture to achieve specific characteristics of the concrete. These characteristics typically include workability, durability, strength, uniformity, and economy. The required characteristics are based on the intended use of the concrete, exposure conditions, building structure needs, and strength requirements. The mix design process below is based on "Design and Control of Concrete Mixtures" by the Portland Cement Association.

 

To create or edit a mix design select Tools > Concrete > Mix Design. The mix design form will be displayed. Existing mix designs can be selected for editing at the top of the form. In addition, mix designs can be added and removed buttons at the top of the form. When a mix design is added or selected the form will have five tabs for Information, Constituents, Admixtures, Design, and Results.

 

 

After a mix design has been created the specifications and requirements can be used in concrete tests.

 

REFERENCE: Kosmatka, Steven H.; Kerkhoff, Beatrix; and Panarese, William C.; Design and Control of Concrete Mixtures, EB001, 14th edition, Portland Cement Association, Skokie, Illinois, USA, 2003.