ITG-4.2R-06 Materials and Quality Considerations for High-Strength Concrete in Moderate to High Seismic Applications

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This document addresses materials and quality considerations when using cast-in-place, normal-weight, high-strength concrete in structures that must be designed for moderate to high seismic applications.The term “high-strength concrete,” as defined by ACI Committee 363, refers to concrete having a specified compressive strength for design of 8000 psi (55 MPa) or greater. The lower 6000 psi (41 MPa) threshold, however, was chosen for the ITG-4 document because it deals with a specialized application of high-strength concrete application in areas of moderate to high seismicity. An accompanying standard, ITG-4.1 (available Spring 2007), is written in mandatory language in a format that can be adopted by local jurisdictions, and will allow building officials to approve the use of high-strength concrete on projects that are being constructed under the provisions of ACI 301 and 318. ITG-4.2R is the supporting document for that standard.ITG 4 has also developed another non-mandatory language document: ITG-4.3R (available Spring 2007). It addresses structural design and detailing considerations.

Keywords: curing; high-strength concrete; mixture proportioning;placement; preconstruction meeting; production; project specification;quality control; seismic design; supplementary cementitious materials;temperature; trial batches.


Document Details

Author: ACI Committee 93ACI Committee 93

Publication Year: 2006

Pages: 26

ISBN: 9780870312250

Categories: Seismic & Lateral Forces

Formats: PDF

This document is Historical

Table of Contents

Chapter 1—Introduction



Chapter 2—Preamble

Chapter 3—Glossary of terms

Chapter 4—Properties of high-strength concrete

4.1—Mechanical properties

4.2—Durability properties

4.3—Constructibility properties

Chapter 5—Raw materials

Chapter 6—Mixture proportioning

6.1—Required strength

6.2—Water-cementitious material ratio

6.3—Cementitious materials content

6.4—Air entrainment


6.6—Supplementary cementitious materials

6.7—Chemical admixtures

6.8—Combinations of supplementary cementitious materials and chemical admixtures

6.9—Proportioning for workability

6.10—Trial batches

Chapter 7—Mixture submittal requirements

Chapter 8—Preconstruction meetings




Chapter 9—Ordering

Chapter 10—Raw materials handling

Chapter 11—Production and delivery

Chapter 12—Concrete temperature control

Chapter 13—Placement, consolidation, and finishing

Chapter 14—Curing

Chapter 15—Raw material sampling and testing

15.1—Sampling method

15.2—Sample identification


Chapter 16—Concrete sampling and testing

16.1—Sampling and testing schedule

Chapter 17—Summary and recommendations

17.1—Raw materials

17.2—Mixture proportioning

17.3—Mixture submittal requirements

17.4—Preconstruction meetings


17.6—Raw materials handling

17.7—Production and delivery

17.8—Concrete temperature control

17.9—Placement, consolidation, and finishing


17.11—Raw materials sampling and testing

17.12—Concrete sampling and testing

Chapter 18—References

18.1—Referenced standards and reports

18.2—Cited references

Appendix—Sample agenda for preconstruction

meeting concerning high-strength concrete


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