American Concrete Institute Introduces New Guide for Shotcrete
The American Concrete Institute, through the work of ACI Committee 506, has released ACI PRC-506-22: Shotcrete—Guide. The newly introduced guide provides information on materials and properties of both dry-mix and wet-mix shotcrete and covers most facets of the shotcrete process, including application procedures, equipment requirements and responsibilities of the shotcrete crew.
As a companion document to ACI SPEC-506.2: Specification for Shotcrete, the Guide also discusses preconstruction trials, craftsman qualification tests, materials tests, finished shotcrete acceptance tests and equipment. The document is written such that the numbering of all sections between the Guide and Specification documents are aligned, allowing ACI PRC-506-22 to serve as a non-mandatory commentary on the mandatory specification provisions.