ACI CODE-355.5-24: Post-Installed Reinforcing Bar Systems in Concrete—Qualification Requirements and Commentary

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Description

This Code prescribes testing programs and evaluation requirements for post-installed reinforcing bars intended for use in concrete under the straight-bar development and splice length design provisions of ACI CODE-318. Testing and assessment criteria are provided for various conditions of use, including seismic loading, sustained loading, aggressive environments, and reduced and elevated temperatures. Criteria are provided for establishing the required characteristic bond strength, reductions for adverse conditions, and associated job-site quality control requirements.

Keywords:

post-installed reinforcing bars; qualification procedures.

 

Document Details

Author: ACI Committee 355

Publication Year: 2024

Pages: 89

ISBN: 9781641952675

Formats: Protected PDF/Web View

Table of Contents

CHAPTER 1—INTRODUCTION, p. 4

1.1—Introduction, p. 4

1.2—Scope, p. 4

1.3—Units of measurement, p. 5

CHAPTER 2—NOTATION AND DEFINITIONS, p. 6

2.1—Notation, p. 6

2.2—Definitions, p. 8

CHAPTER 3—GENERAL REQUIREMENTS, p. 13

3.1—Test organization and basic requirements, p. 13

3.2—Variables and options, p. 13

3.3—Required tests for qualification of Type A grouts, p. 14

3.4—Required tests for qualification of Type B grouts, p. 16

3.5—Assessment for alternative drilling methods, p. 18

CHAPTER 4—REQUIREMENTS FOR TEST SPECIMENS, REINFORCING BAR INSTALLATION, AND TESTING, p. 20

4.1—Testing by ITEA and manufacturer, p. 20

4.2—Test samples, p. 20

4.3—Concrete for test members, p. 20

4.4—Requirements for test members and reinforcing bars, p. 21

4.5—Installation, p. 23

4.6—Drill bit requirements, p. 23

4.7—Test methods, p. 23

4.8—Changes to products, p. 25

CHAPTER 5—REQUIREMENTS FOR GROUT IDENTIFICATION, p. 26

5.1—Basic requirements, p. 26

5.2—Verification, p. 26

5.3—Fingerprinting grouts, p. 26

5.4—Packaging, p. 27

5.5—Classification of grout as Type A or Type B, p. 27

CHAPTER 6—REFERENCE TESTS, p. 28

6.1—Purpose, p. 28

6.2—Required tests, p. 28

6.3—Conduct of tests, p. 28

CHAPTER 7—RELIABILITY TESTS, p. 30

7.1—Purpose, p. 30

7.2—Required tests, p. 30

7.3—Conduct of tests, p. 30

7.4—Limitations of reliability tests, p. 30

7.5—Sensitivity to hole cleaning: dry concrete, p. 31

7.6—Sensitivity to hole cleaning: saturated concrete, p. 33

7.7—Sensitivity to hole cleaning: water-filled hole, p. 34

7.8—Sensitivity to hole cleaning: submerged concrete, p. 35

7.9—Sensitivity to mixing effort, p. 36

7.10—Tension tests with sustained load at maximum long-term temperature, p. 36

7.11—Sensitivity to installation direction, p. 38

CHAPTER 8—SERVICE-CONDITION TESTS, p. 41

8.1—Purpose, p. 41

8.2—Required tests, p. 41

8.3—Conduct of tests, p. 41

8.4—Bond/splitting behavior at deep embedment, p. 41

8.5—Tension tests with decreased installation temperature, p. 42

8.6—Establishment of curing time, p. 44

CHAPTER 9—INSTALLATION PROCEDURE VERIFICATION TESTS, p. 45

9.1—Purpose, p. 45

9.2—Required tests, p. 45

9.3—Conduct of tests, p. 45

9.4—Injection at deep embedment, p. 45

9.5—Injection verification, p. 46

CHAPTER 10—DURABILITY TESTS, p. 48

10.1—Purpose, p. 48

10.2—Required tests, p. 48

10.3—Conduct of tests, p. 48

10.4—Sensitivity to freezing-and-thawing conditions, p. 48

10.5—Sensitivity to installation in low-moisture concrete, p. 50

10.6—Resistance to alkalinity and sulfur, p. 52

10.7—Resistance to corrosion, p. 55

10.8—Resistance to accelerated aging conditions, p. 57

CHAPTER 11—TESTS FOR SPECIAL CONDITIONS, p. 59

11.1—Purpose, p. 59

11.2—Required tests, p. 59

11.3—Conduct of tests, p. 59

11.4—Seismic tests, p. 59

11.5—Round-robin tests for regional concrete variation, p. 61

11.6—Tests to assess fire resistance, p. 63

CHAPTER 12—ASSESSMENT, p. 68

12.1—Analysis of data, p. 68

12.2—Normalization of capacities for measured concrete bond and steel strengths, p. 68

12.3—General requirements, p. 68

12.4—Bond strength requirements, p. 70

12.5—Assessment of sustained load behavior at maximum long-term temperature (7.10), p. 73

12.6—Assessment of performance associated with installation direction (7.11), p. 74

12.7—Assessment of bond and splitting behavior at deep embedment (8.4), p. 75

12.8—Assessment of performance with decreased installation temperature (8.5), p. 76

12.9—Assessment for installation in low-moisture concrete (10.5), p. 77

12.10—Assessment for establishment of curing time (8.6), p. 77

12.11—Assessment of installation procedure verification tests, p. 77

12.12—Assessment of freezing and thawing behavior (10.4), p. 77

12.13—Assessment of slice tests to assess durability, p. 78

12.14—Assessment of corrosion tests (10.7), p. 79

12.15—Assessment of performance under seismic tension (11.4), p. 79

12.16—Adjustment for regional variations in concrete (11.5), p. 79

12.17—Assessment of tests for determining fire resistance (11.6), p. 80

12.18—Establishment of hole-cleaning procedures, p. 82

CHAPTER 13—DATA PRESENTATION, p. 84

13.1—General requirements, p. 84

13.2—Contents of reports, p. 84

CHAPTER 14—INDEPENDENT TESTING AND EVALUATION AGENCY REQUIREMENTS, p. 85

14.1—General requirements, p. 85

14.2—Certification, p. 85

CHAPTER 15—QUALITY CONTROL REQUIREMENTS, p. 86

15.1—Quality assurance program, p. 86

15.2—Quality control manuals, p. 86

15.3—Inspection, p. 86

15.4—Proof loading, p. 87

CHAPTER 16—REFERENCES, p. 88

Referenced standards and reports, p. 88

Commentary references, p. 88

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