214R-02
Evaluation of Strength Test Results of Concrete
2002, 14 pp.
$53.50

Statistical procedures provide tools of considerable value when evaluating the results of strength tests. Information derived from such procedures is also valuable in defining design criteria and specifications. This report discusses variations that occur in the strength of concrete and presents statistical procedures that are useful in the interpretation of these variations with respect to specified testing and criteria.

Contents:
Chapter 1--Introduction

Chapter 2--Variations in strength

2.1--General

2.2--Properties of concrete

2.3--Testing methods

Chapter 3--Analysis of strength data

3.1--Notation

3.2--General

3.3--Statistical functions

3.4--Strength variations

3.5--Standards of Control

3.6-Standars of control

Chapter 4--Criteria

4.1--General

4.2--Data used to establish minimum required average strength

4.3--Criteria for strength requirements

Chapter5-Evaluation of data

5.1-General

5.2-Numbers of tests

5.3-Rejection of doubtful specimens

5.4-Additional test requirements

5.5-Basic quality-control charts

5.6-Other evaluation techniques

Chapter 6-References

6.1-Referenced standards and reports

6.2-Cited references

Appendix A-Examples of CUSUM technique

A.1-Introduction

A.2-Theory

A.3-Calculations

A.4-Analysis and comparison with conventional control charts

A.5-Management considerations of interference

A.6-Establishing limits for interference

A.7-Difficulties with CUSUM chart