ACI 506.1 2021

$43.33

ACI PRC-506.1-21: Fiber-Reinforced Shotcrete – Guide

Published By	Publication Date	Number of Pages
ACI	2021	24

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Category: ACI

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Description

This guide describes the technology and applications of fiber-reinforced shotcrete (FRS) with a focus on synthetic and steel macrofibers. It serves as a bridge between information given in documents reported by ACI Committee 506 and ACI Committee 544. Proportions of typical mixtures, batching, mixing, and application procedures are described, including modification of mixture proportions and equipment needed for FRS. General performance criteria of FRS, particularly postcracking flexural strength and toughness, are described along with other typical properties and benefits, such as increased resistance to shrinkage cracking and impact resistance. Corresponding test methods are also discussed. The document presents general FRS design considerations. Applications of FRS are described, including construction and repair of tunnel and mining linings, slope stabilization, retaining structures, fire-explosive-spalling-resistant linings, and architectural structures. The report also gives guidance on the specification and quality control of FRS. Keywords: fiber-reinforced shotcrete; fibers; linings; mining; repair; shotcrete; steel fibers; synthetic fibers; tunneling.

PDF Catalog

PDF Pages	PDF Title
3	TITLE PAGE
4	CHAPTER 1—INTRODUCTION AND SCOPE 1.1—Introduction 1.2—Scope CHAPTER 2—NOTATION AND DEFINITIONS 2.1—Notation 2.2—Definitions
5	CHAPTER 3—MATERIALS 3.1—General 3.2—Fibers
6	3.3—Supplementary cementitious materials and chemical admixtures CHAPTER 4—MIXTURE PROPORTIONS 4.1—General 4.2—Wet-mix shotcrete 4.3—Dry-mix shotcrete 4.4—Shift of mixture proportions
7	CHAPTER 5—PRODUCTION 5.1—General 5.2—Batching and mixing
8	5.3—Installation
9	CHAPTER 6—PERFORMANCE AND PERFORMANCE TESTING 6.1—General 6.2—Fresh properties 6.3—Early strength properties
10	6.4—Hardened strength properties
12	CHAPTER 7—APPLICATIONS AND DESIGN CONSIDERATIONS 7.1—General 7.2—Temporary structures
13	7.3—Permanent structures
14	7.4—Repair and structural rehabilitation
15	7.5—Special load cases
16	7.6—Durability 7.7—Strain hardening effect under normal force-moment loading conditions
17	CHAPTER 8—SPECIFICATION AND QUALITY CONTROL CONSIDERATIONS 8.1—General 8.2—Performance based specifications 8.3—Submittals 8.4—Preconstruction testing 8.5—Quality control
18	CHAPTER 9—REFERENCES
19	Authored documents