214R-11 Guide to Evaluation of Strength Test Results of Concrete

214R-11 Guide to Evaluation of Strength Test Results of Concrete

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Description

Statistical procedures provide valuable tools for evaluating the results of concrete strength tests. Information derived from such procedures is valuable in defining design criteria, specifications, and other parameters needed for structural evaluation and repair. This guide discusses variations that occur in concrete strength and presents statistical procedures useful in interpreting these variations with respect to specified testing and criteria.

Keywords: coefficient of variation; concrete strength; normal distribution;required overdesign; quality control; standard deviation; statistical methods.

 

Document Details

Author: ACI Committee 214

Publication Year: 2011

Pages: 16.00

ISBN: 9780870314230

Categories: Testing

Formats: PDF

Table of Contents

Chapter 1—Introduction

1.1—Introduction

1.2—Summary

Chapter 2—Notation and definitions

2.1—Notation

2.2—Definitions

Chapter 3—Variations in strength

3.1—General

3.2—Influence of batch-to-batch variations on concrete strength

3.3—Influence of within-batch variations on concrete strength

Chapter 4—Analysis of strength data

4.1—General

4.2—Statistical functions

4.3—Strength variations

4.4—Interpretation of statistical parameters

4.5—Standards of control

Chapter 5—Criteria

5.1—General

5.2—Data used to establish minimum required average strength

5.3—Criteria for strength requirements

Chapter 6—Evaluation of data

6.1—General

6.2—Numbers of tests

6.3—Rejection of doubtful specimens

6.4—Additional test requirements

6.5—Quality-control charts

6.6—Additional evaluation techniques

Chapter 7—References

7.1—Referenced standards and reports

7.2—Cited references

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