The purpose of this document, updated in 2023, is to provide a standardized protocol for testing and reporting of data for inorganic repair materials. Descriptions of material limitations, packaging, storage, label contents, application instructions, material composition, and material properties can be inconsistent, confusing, missing, or misleading. The ACI 364.3R/ICRI 320.3R Cementitious Repair Material Data Sheet—Guide is a first in the industry to provide this information in a standardized, logical, and consistent format so that repair materials can be appropriately selected and specified.