BS DD249(1999) : 1999
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
TESTING AGGREGATES - METHOD FOR THE ASSESSMENT OF ALKALI-SILICA REACTIVITY - POTENTIAL ACCELERATED MORTAR-BAR METHOD
Hardcopy , PDF
19-06-2014
English
01-01-1999
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Committees responsible
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents and materials
7 Storage solution
8 Sampling
9 Preparation of test aggregate
10 Preparation of test specimens
11 Test procedure
12 Calculations and classification
13 Test report
Annex A (informative) Aggregate combinations for testing
Annex B (informative) Estimate of precision
Annex C (normative) Classification criteria
Bibliography
Table 1 - Grading requirements for the test aggregate
Table B.1 - Critical ranges and reproducibility limits for
the accelerated mortar-bar method when a test
result is obtained as the mean expansion of three
bars from one mortar batch
Table C.1 - Classification criteria
Describes a method for predicting the potential for expansion of concrete caused by the alkali-silica reactivity (ASR) of aggregates and combinations of aggregates. The test duration is normally 16 days.
| Committee |
B/502/6
|
| DevelopmentNote |
Reviewed and confirmed by BSI, November 2011. (10/2011)
|
| DocumentType |
Draft
|
| Pages |
12
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| PD 6682-9:2003 | Aggregates Guidance on the use of European test method standards |
| S.R. 24:2004 | GUIDANCE ON THE USE AND APPLICATION OF EUROPEAN TEST METHOD STANDARDS FOR AGGREGATES |
| ASTM C 1260 : 2014 : REDLINE | Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method) |
| BS 812-104:1994 | Testing aggregates Method for qualitative and quantitative petrographic examination of aggregates |
| BS 4551-1:1998 | Methods of testing mortars, screeds and plasters Physical testing |
| BS 812-100:1990 | Testing aggregates General requirements for apparatus and calibration |
| BS 812-101:1984 | Testing aggregates Guide to sampling and testing aggregates |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
| BS 812-123:1999 | Testing aggregates Method for determination of alkali-silica reactivity. Concrete prism method |
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