ACI PRC-506-22 Shotcrete-Guide

Description: This guide is a companion document to ACI 506.2, “Specification for Shotcrete,” and provides information on materials and properties of both dry-mix and wet-mix shotcrete. Most facets of the shotcrete process are covered, including application procedures, equipment requirements, and responsibilities of the shotcrete crew. Other aspects, such as preconstruction trials, craftsman qualification tests, materials tests, finished shotcrete acceptance tests, and equipment, are also discussed. Table of Contents PREFACE, p. 2 Introduction, p. 2History, p. 2Applications, p. 3New developments, p. 3Research and development, p. 3 PART 1—GENERAL, p. 3 1.1—Scope, p. 31.2—Definitions, p. 51.3—References: Refer to Part 7, p. 51.4—Submittals, p. 51.5—Preconstruction testing by contractor, p. 51.6—Testing during construction: quality assurance and quality control, p. 61.7—Acceptance, p. 9 PART 2—PRODUCTS, p. 9 2.1—Materials, p. 92.2—Packaged shotcrete materials, p. 132.3—Fiber-reinforced shotcrete, p. 132.4—Shotcrete properties, p. 132.5—Mixture proportions, p. 162.6—Batching and mixing, p. 18 PART 3—EXECUTION, p. 20 3.1—Surface preparation, p. 203.2—Joints, p. 243.3—Alignment control, p. 243.4—Application, p. 253.5—Finishing, p. 353.6—Curing, p. 383.7—Protection, p. 383.8—Tolerances, p. 383.9—Repair, p. 39 PART 4—EQUIPMENT, p. 39 4.1—Introduction, p. 394.2—Dry-mix equipment, p. 404.3—Wet-mix equipment, p. 414.4—Air requirements, p. 424.5—Mixing equipment, p. 434.6—Hoses, p. 434.7—Nozzles, p. 444.8—Auxiliary equipment, p. 454.9—Plant layout and operation, p. 464.10—Other uses of shotcrete equipment, p. 47 PART 5—CREW ORGANIZATION, p. 47 5.1—Introduction, p. 475.2—Composition and crew duties, p. 475.3—Crew qualifications, p. 485.4—Communication, p. 49 PART 6—SUSTAINABILITY, p. 49 6.1—Shotcrete sustainability, p. 496.2—Formwork reduction or elimination, p. 496.3—Construction efficiency, p. 506.4—Repair and rehabilitation, p. 506.5—Creativity and efficiency of shotcrete sections, p. 506.6—Summary, p. 50 PART 7—REFERENCES, p. 50 Authored references, p. 52

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