506.4R-19: Guide for the Evaluation of Shotcrete

506.4R-19: Guide for the Evaluation of Shotcrete

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Description

This document provides information on the evaluation of both dry-mix and wet-mix shotcrete. It is assumed throughout the document that shotcrete is a method of placing concrete. However, for the sake of readability, the word “shotcrete” is often used either to identify the shotcrete process (method) or the shotcrete mixture (product) in the present document.

Evaluation of in-place shotcrete requires experience, education, and engineering judgment. This document serves as a guide for engineers, inspectors, contractors, and others involved in accepting, rejecting, or evaluating in-place dry- or wet-mix shotcrete.

Keywords:

absorption and voids test; beam test; bond pullout test; density; drilled core test; end-beam tester; in-place density; mockup panel; nailing guns method; needle penetrometer; nondestructive testing; penetrating probe method; round panel test; soil penetrometer

 

Document Details

Author: ACI Committee 506

Pages: 18

ISBN: 9781641950725

Categories: Shotcrete

Formats: PDF

Table of Contents

CHAPTER 1—INTRODUCTION AND SCOPE

1.1—Introduction

1.2—Scope

CHAPTER 2—DEFINITIONS

CHAPTER 3—PLANNING TESTING PROGRAM

3.1—General

3.2—Standards

3.3—Planning

CHAPTER 4—EVALUATION OF FRESHLY MIXED SHOTCRETE

4.1—General

4.2—Shotcrete mixture proportions

4.3—Tests applicable for wet-mix shotcrete

4.4—Tests applicable for dry-mix shotcrete

4.5—Frequency and relevance

CHAPTER 5—TEST PANEL PRODUCTION AND TEST SPECIMEN SAMPLING

5.1—General

5.2—Test panels

5.3—Materials

5.4—Procedure

5.5—Curing

5.6—Obtaining specimens from panels

5.7—Reporting test panel data

CHAPTER 6—EVALUATION OF EARLY-AGE STRENGTH

6.1—General

6.2—Field test methods

6.3—Frequency

CHAPTER 7—STRENGTH

7.1—General

7.2—Destructive testing

7.3—Nondestructive testing

7.4—Frequency

7.5—Relevance

CHAPTER 8—VOIDS AND BOND

8.1—General

8.2—Sounding

8.3—Wetting

8.4—Bond pulloff testing

8.5—Nondestructive test methods

8.6—Frequency

8.7—Relevance

CHAPTER 9—POROSITY AND PERMEABILITY

9.1—General

9.2—Density, absorption, and voids in hardened concrete

9.3—Permeability tests

9.4—Concrete’s ability to resist chloride ion penetration

9.5—Density

9.6—Frequency

9.7—Relevance

CHAPTER 10—ACCEPTANCE CRITERIA FOR SHOTCRETE

10.1—General

10.2—Application difficulty levels

10.3—Acceptance criteria for defects and reinforcement encapsulation quality in shotcrete

10.4—Examples for specification of acceptance criteria for shotcrete

CHAPTER 11—PRECONSTRUCTION TESTING

11.1—General

11.2—Preconstruction approaches

11.3—Procedure outline

11.4—Details

CHAPTER 12—EVALUATION OF IN-PLACE SHOTCRETE

12.1—General

12.2—Preliminary investigations

12.3—Detailed investigations

CHAPTER 13—REFERENCES

Authored documents

APPENDIX A—QUALITY ASSURANCE FLOWCHART

ERRATA INFO

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