S.R. CR 13901:2000
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
THE USE OF THE CONCEPT OF CONCRETE FAMILIES FOR THE PRODUCTION AND CONFORMITY CONTROL OF CONCRETE
Hardcopy , PDF
05-13-2021
English
01-01-2000
1 Introduction
1.1 Introduction to production control
1.2 Introduction to conformity control
1.3 EN 206-1
1.4 General
2 Background
2.1 Uncertainty
2.2 Variability of test data
2.3 Systematic changes in concrete quality
2.4 Speed of response to changes in concrete quality
2.5 Variability in standard deviation
3 The use of concrete families in production control
3.1 The basic concept
3.2 Principles applicable to all systems
3.3 Selecting the family
3.4 Satisfying the specification
3.5 Coping with specials
4 The use of concrete families in conformity control
4.1 Procedure for conformity
4.2 Assessment of relationships
4.3 Derivation of the confirmation criterion
5 Discussion
6 Conclusions
7 References
Appendix A: Examples of the use of the concept of concrete families
Example 1: Concrete family containing aggregates of different
sizes and cem ii-v cement
Example 2: Concrete family concept with product specification
based on performance as applied in the Netherlands
Example 3: Conformity control of a concrete family containing
different amounts of fly ash
Example 4: All concretes made with cem i cement and 30% fly ash
Example 5: Concrete family containing data from a number of
plants using the same materials
Appendix B: Example of the effect on the standard deviation
when data are transposed and pooled
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