This standard specifies the terms and definitions, purchase requirements, transportation and storage, and process technology requirements for the use of silica sand powder as a concrete admixture to replace part of the cement in the production of prestressed high-strength concrete piles. This standard applies to the technical regulations for the use of silica sand powder in the production of prestressed high-strength concrete piles using the autoclaved curing process. Silica sand powder can also be used in the production of other concrete products.