BS DD83(1983) : 1983
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ASSESSMENT OF THE COMPOSITION OF FRESH CONCRETE
Hardcopy , PDF
10-15-1997
English
01-01-1983
Foreword
Cooperating organizations
Recommendations
Section one. General
1. Scope
2. Definitions
Section two. Sampling
3. Sampling and sample reduction
Section three. Analysis methods
4. General
5. Buoyancy (BS 1881) method
6. Chemical (GLC) method
7. Constant volume (RAM) method
8. Physical separation (Laing) method
9. Pressure filter (Sandberg) method
10. Water content
11. Report of sample and test data
Section four. Assessment of the accuracy and precision
of the analysis methods
12. General
13. Procedure A: laboratory assessment of accuracy and
repeatability
14. Procedure B: precision of sampling, sample reduction
and testing
15. Procedure C: accuracy and precision of calibrations
16. Procedure D: assessment of precision of sample
reduction and testing from routine tests
Section five. Procedure for assessing compliance
17. General
18. Considerations affecting compliance
19. Assessment of compliance
Appendix
A. Purchaser's risks
Tables
1. Sample and test sample masses
2. Concentrations of cement solutions for flame photo-
meter calibrations
3. Procedures for assessing bias components
4. Procedures for assessing precision components
5. Calculation of bias and repeatability in procedure A
6. Calculation of repeatability and sampling standard
deviation in procedure B
7. Calculation of bias and calibration standard
deviation in procedure C
8. Calculation of repeatability and standard deviation
of sample reduction and testing. Procedure D
9. Summary of bias values for insertion in the
compliance equation
10. Summary of standard deviation values for insertion
in the compliance equation
11. Purchaser's risks and corresponding normal
probability distribution constants
12. Purchaser's risks when the assumed values in tables
9 and 10 (method A) are appropriate
Figures
1. Apparatus for buoyancy methods
2. General assembly diagram including sampling tower
3. Suitable dimensions for a siphon can
4. Typical cement calibration curve
5. Aggregate calibration line
6. Rapid analysis machine (RAM): general assembly
diagram
7. Calibration line
8. General assembly diagram
9. Splitter unit
10. Aggregate calibration lines
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